MARKET STUDY All analysis covers resale homes only. New construction appears once, in its own section. Click any dot on the map for that sale.
Resale sales, 365 days
29
single-family resale homes
Median net sale price
$462,400
average $540,055
Median net price per SF
$355
average $356
Median days on market
31 days
average 59 days
1. SummaryResale homes · 29 sales · October 31, 2025 – October 30, 2026
This study looks at the 29 resale homes sold in Chernosky 09 in the 365 days to October 30, 2026. A full year is used because only 17 resale homes sold in the last 180 days. New construction is left out and shown on its own in section 7. The homes are compared four ways: by price, by living area, by year built and with or without a view. The first three are split into four equal groups (quartiles), each named by its range.
Each comparison has its own section (3–6) with everything about it in one place: the key differences, a table of every measure at a glance, the charts and the numbers.
2. Where the resale homes sold29 resale homes · colored by price range
Each dot is one resale home, colored by its price range. Use the buttons to show one price range at a time. Click a dot for that sale: address, close date, original and last list price, net sale price, living area, net sale per SF and days on market. Scroll or pinch to zoom.
3. Quartiles by net sale priceResale homes · 29 sales · October 31, 2025 – October 30, 2026
Sales ranked by net sale price and cut into four equal groups. This is the usual way to read a market by price.
Bottom line
Homes over $737K are about 56 years newer than homes under $327K.
Homes over $737K are about 1,130 SF (102%) larger than homes under $327K.
Homes over $737K sell for about $232 per SF (109%) more than homes under $327K.
3.1 Key differences
The top group against the bottom group. Only real differences are listed. Section 8 explains each measure.
Under $327K$327K–$460K$462K–$737KOver $737K
Higher-priced homes Over $737K
Tend to be newer.
Are much larger.
Sell for more per square foot.
Lower-priced homes Under $327K
Tend to be older.
Are much smaller.
Sell for less per square foot.
3.2 At a glance
Shaded rows are real differences; the darkest cell is the highest. Gray rows show no clear difference. Prices are averages; days on market and year built are medians.
Under $327K
$327K–$460K
$462K–$737K
Over $737K
Real difference?
Net price per SF
$212 per SFLowest
$349 per SF
$410 per SF
$444 per SFHighest
✓ large
Living area
1,104 SFSmallest
1,119 SF
1,532 SF
2,233 SFLargest
✓ large
Year built
1961
1958Oldest
2020Newest
2017
✓ large
Days on market
41 days
15 days
57 days
13 days
unclear
Discount from original list
12.6%
10.8%
6.9%
3.4%
unclear
Price cut before sale
43%
43%
62%
29%
unclear
Seller paid closing costs or repairs
43%
57%
25%
57%
unclear
Has a view
0%
14%
50%
29%
unclear
How to read this section. Each heading gives the finding. The gold box says whether the gap is real (✓, with its size) or could be chance (–). The section ends with its numbers; the tests are in section 8.3.
3.3 Homes over $737K sell for about $232 per SF (109%) more than homes under $327K
The average is $444 per SF for homes over $737K and $212 per SF for homes under $327K. It rises step by step from the lowest range to the highest. Defined in 8.1.2.
✓ Real difference · large
3.4 Homes over $737K are about 1,130 SF (102%) larger than homes under $327K
The average is 2,233 SF for homes over $737K and 1,104 SF for homes under $327K. It rises step by step from the lowest range to the highest. Defined in 8.1.3.
✓ Real difference · large
3.5 Homes over $737K are about 56 years newer than homes under $327K
The median is 2017 for homes over $737K and 1961 for homes under $327K. It does not move in a straight line; homes $462K–$737K are highest. Defined in 8.1.4.
✓ Real difference · large
3.6 Days on market: no clear difference
The median is 13 days for homes over $737K and 41 days for homes under $327K. It does not move in a straight line; homes $462K–$737K are highest. Defined in 8.1.5.
– No clear difference · could be chance
3.7 Discount from original list: no clear difference
The average is 3.4% for homes over $737K and 12.6% for homes under $327K. It falls step by step from the lowest range to the highest. Defined in 8.1.6.
– No clear difference · could be chance
3.8 How often: price cut before sale, seller paid closing costs or repairs, has a view
Each bar is the share of homes in the group, in percent.
29% of homes over $737K had a price cut before sale, against 43% of homes under $327K. Defined in 8.1.7.
57% of homes over $737K had the seller pay closing costs or repairs, against 43% of homes under $327K. Defined in 8.1.8.
29% of homes over $737K have a view, against 0% of homes under $327K. Defined in 8.1.9.
Price cut before sale: – No clear difference · could be chance
Seller paid closing costs or repairs: – No clear difference · could be chance
Has a view: – No clear difference · could be chance
3.9 The numbers: price and size
Under $327K7 sales
$327K–$460K7 sales
$462K–$737K8 sales
Over $737K7 sales
All29 sales
Real difference?
Net sale price average
$199,775
$382,011
$580,050
$992,671
$540,055
by design
Net price per SF average
$212
$349
$410
$444
$356
✓ large
Living area average
1,104
1,119
1,532
2,233
1,498
✓ large
Year built median
1961
1958
2020
2017
2013
✓ large
3.10 The numbers: selling
Under $327K7 sales
$327K–$460K7 sales
$462K–$737K8 sales
Over $737K7 sales
All29 sales
Real difference?
Days on market median
41
15
57
13
31
unclear
Discount from original list average
12.6%
10.8%
6.9%
3.4%
8.4%
unclear
Price cut before sale
43%
43%
62%
29%
45%
unclear
Seller paid closing costs or repairs
43%
57%
25%
57%
45%
unclear
Has a view
0%
14%
50%
29%
24%
unclear
Prices, price per SF, living area and discount are averages; days on market and year built are medians. The test behind each verdict is in 8.3.1.
4. Quartiles by living areaResale homes · 29 sales · October 31, 2025 – October 30, 2026
Sales ranked by living area and cut into four equal groups, from the smallest homes to the largest.
Bottom line
Homes over 2,131 SF sell for about $599K (160%) more than homes under 1,031 SF.
4.1 Key differences
The top group against the bottom group. Only real differences are listed. Section 8 explains each measure.
Under 1,031 SF1,031–1,236 SF1,256–2,131 SFOver 2,131 SF
Larger homes Over 2,131 SF
Sell for much more.
Smaller homes Under 1,031 SF
Sell for much less.
4.2 At a glance
Shaded rows are real differences; the darkest cell is the highest. Gray rows show no clear difference. Prices are averages; days on market and year built are medians.
Under 1,031 SF
1,031–1,236 SF
1,256–2,131 SF
Over 2,131 SF
Real difference?
Net sale price
$374K
$324KLowest
$495K
$973KHighest
✓ large
Net price per SF
$427 per SF
$296 per SF
$297 per SF
$411 per SF
unclear
Year built
1958
1964
1983
2016
unclear
Days on market
74 days
10 days
24 days
19 days
unclear
Discount from original list
15.1%
11.4%
4.2%
3.4%
unclear
Price cut before sale
86%
29%
38%
29%
unclear
Seller paid closing costs or repairs
57%
43%
25%
57%
unclear
Has a view
14%
14%
38%
29%
unclear
4.3 Homes over 2,131 SF sell for about $599K (160%) more than homes under 1,031 SF
The average is $973K for homes over 2,131 SF and $374K for homes under 1,031 SF. It does not move in a straight line; homes over 2,131 SF are highest. Defined in 8.1.1.
✓ Real difference · large
4.4 Net price per SF: no clear difference
The average is $411 per SF for homes over 2,131 SF and $427 per SF for homes under 1,031 SF. It does not move in a straight line; homes under 1,031 SF are highest. Defined in 8.1.2.
– No clear difference · could be chance
4.5 Year built: no clear difference
The median is 2016 for homes over 2,131 SF and 1958 for homes under 1,031 SF. It rises step by step from the lowest range to the highest. Defined in 8.1.4.
– No clear difference · could be chance
4.6 Days on market: no clear difference
The median is 19 days for homes over 2,131 SF and 74 days for homes under 1,031 SF. It does not move in a straight line; homes under 1,031 SF are highest. Defined in 8.1.5.
– No clear difference · could be chance
4.7 Discount from original list: no clear difference
The average is 3.4% for homes over 2,131 SF and 15.1% for homes under 1,031 SF. It falls step by step from the lowest range to the highest. Defined in 8.1.6.
– No clear difference · could be chance
4.8 How often: price cut before sale, seller paid closing costs or repairs, has a view
Each bar is the share of homes in the group, in percent.
29% of homes over 2,131 SF had a price cut before sale, against 86% of homes under 1,031 SF. Defined in 8.1.7.
57% of homes over 2,131 SF had the seller pay closing costs or repairs, against 57% of homes under 1,031 SF. Defined in 8.1.8.
29% of homes over 2,131 SF have a view, against 14% of homes under 1,031 SF. Defined in 8.1.9.
Price cut before sale: – No clear difference · could be chance
Seller paid closing costs or repairs: – No clear difference · could be chance
Has a view: – No clear difference · could be chance
4.9 The numbers: price and size
Under 1,031 SF7 sales
1,031–1,236 SF7 sales
1,256–2,131 SF8 sales
Over 2,131 SF7 sales
All29 sales
Real difference?
Net sale price average
$374,080
$324,313
$495,356
$972,857
$540,055
✓ large
Net price per SF average
$427
$296
$297
$411
$356
unclear
Living area average
864
1,118
1,631
2,361
1,498
by design
Year built median
1958
1964
1983
2016
2013
unclear
4.10 The numbers: selling
Under 1,031 SF7 sales
1,031–1,236 SF7 sales
1,256–2,131 SF8 sales
Over 2,131 SF7 sales
All29 sales
Real difference?
Days on market median
74
10
24
19
31
unclear
Discount from original list average
15.1%
11.4%
4.2%
3.4%
8.4%
unclear
Price cut before sale
86%
29%
38%
29%
45%
unclear
Seller paid closing costs or repairs
57%
43%
25%
57%
45%
unclear
Has a view
14%
14%
38%
29%
24%
unclear
Prices, price per SF, living area and discount are averages; days on market and year built are medians. The test behind each verdict is in 8.3.2.
5. Quartiles by year builtResale homes · 29 sales · October 31, 2025 – October 30, 2026
Sales ranked by year built and cut into four groups, from the oldest to the newest. Homes built in the same year always stay in the same group, so group sizes can differ a little.
Bottom line
Homes built after 2019 sell for about $318K (98%) more than homes built before 1958.
5.1 Key differences
The top group against the bottom group. Only real differences are listed. Section 8 explains each measure.
Before 19581958–20062013–2019After 2019
Newer homes After 2019
Sell for much more.
Older homes Before 1958
Sell for much less.
5.2 At a glance
Shaded rows are real differences; the darkest cell is the highest. Gray rows show no clear difference. Prices are averages; days on market and year built are medians.
Before 1958
1958–2006
2013–2019
After 2019
Real difference?
Net sale price
$324KLowest
$359K
$795KHighest
$642K
✓ large
Net price per SF
$339 per SF
$239 per SF
$415 per SF
$435 per SF
unclear
Living area
966 SF
1,504 SF
1,862 SF
1,533 SF
unclear
Days on market
50 days
26 days
12 days
74 days
unclear
Discount from original list
19.2%
5.9%
4.5%
6.3%
unclear
Price cut before sale
67%
25%
25%
71%
unclear
Seller paid closing costs or repairs
33%
38%
62%
43%
unclear
Has a view
17%
12%
38%
29%
unclear
5.3 Homes built after 2019 sell for about $318K (98%) more than homes built before 1958
The average is $642K for homes built after 2019 and $324K for homes built before 1958. It does not move in a straight line; homes built 2013–2019 are highest. Defined in 8.1.1.
✓ Real difference · large
5.4 Net price per SF: no clear difference
The average is $435 per SF for homes built after 2019 and $339 per SF for homes built before 1958. It does not move in a straight line; homes built after 2019 are highest. Defined in 8.1.2.
– No clear difference · could be chance
5.5 Living area: no clear difference
The average is 1,533 SF for homes built after 2019 and 966 SF for homes built before 1958. It does not move in a straight line; homes built 2013–2019 are highest. Defined in 8.1.3.
– No clear difference · could be chance
5.6 Days on market: no clear difference
The median is 74 days for homes built after 2019 and 50 days for homes built before 1958. It does not move in a straight line; homes built after 2019 are highest. Defined in 8.1.5.
– No clear difference · could be chance
5.7 Discount from original list: no clear difference
The average is 6.3% for homes built after 2019 and 19.2% for homes built before 1958. It does not move in a straight line; homes built before 1958 are highest. Defined in 8.1.6.
– No clear difference · could be chance
5.8 How often: price cut before sale, seller paid closing costs or repairs, has a view
Each bar is the share of homes in the group, in percent.
71% of homes built after 2019 had a price cut before sale, against 67% of homes built before 1958. Defined in 8.1.7.
43% of homes built after 2019 had the seller pay closing costs or repairs, against 33% of homes built before 1958. Defined in 8.1.8.
29% of homes built after 2019 have a view, against 17% of homes built before 1958. Defined in 8.1.9.
Price cut before sale: – No clear difference · could be chance
Seller paid closing costs or repairs: – No clear difference · could be chance
Has a view: – No clear difference · could be chance
5.9 The numbers: price and size
Before 19586 sales
1958–20068 sales
2013–20198 sales
After 20197 sales
All29 sales
Real difference?
Net sale price average
$323,571
$359,036
$794,564
$641,626
$540,055
✓ large
Net price per SF average
$339
$239
$415
$435
$356
unclear
Living area average
966
1,504
1,862
1,533
1,498
unclear
Year built median
1944
1962
2016
2023
2013
by design
5.10 The numbers: selling
Before 19586 sales
1958–20068 sales
2013–20198 sales
After 20197 sales
All29 sales
Real difference?
Days on market median
50
26
12
74
31
unclear
Discount from original list average
19.2%
5.9%
4.5%
6.3%
8.4%
unclear
Price cut before sale
67%
25%
25%
71%
45%
unclear
Seller paid closing costs or repairs
33%
38%
62%
43%
45%
unclear
Has a view
17%
12%
38%
29%
24%
unclear
Prices, price per SF, living area and discount are averages; days on market and year built are medians. The test behind each verdict is in 8.3.3.
6. View and no viewResale homes · 29 sales · October 31, 2025 – October 30, 2026
Sales where the MLS lists a view (greenbelt or park, trees, golf course, hill country, water and similar) against those listing none or only the neighborhood. 2 sales whose MLS view entry is only “See Remarks” are left out.
Bottom line: no measure differs enough between the groups to rule out chance.
6.1 Key differences
The top group against the bottom group: no measure differs enough to rule out chance.
6.2 At a glance
Shaded rows are real differences; the darkest cell is the highest. Gray rows show no clear difference. Prices are averages; days on market and year built are medians.
View
No view
Real difference?
Net sale price
$636K
$510K
unclear
Net price per SF
$388 per SF
$342 per SF
unclear
Living area
1,666 SF
1,441 SF
unclear
Year built
2017
1985
unclear
Days on market
33 days
26 days
unclear
Discount from original list
3.7%
8.7%
unclear
Price cut before sale
43%
40%
unclear
Seller paid closing costs or repairs
14%
55%
unclear
6.3 Net sale price: no clear difference
The average is $636K for homes with a view and $510K for homes without a view. Defined in 8.1.1.
– No clear difference · could be chance
6.4 Net price per SF: no clear difference
The average is $388 per SF for homes with a view and $342 per SF for homes without a view. Defined in 8.1.2.
– No clear difference · could be chance
6.5 Living area: no clear difference
The average is 1,666 SF for homes with a view and 1,441 SF for homes without a view. Defined in 8.1.3.
– No clear difference · could be chance
6.6 Year built: no clear difference
The median is 2017 for homes with a view and 1985 for homes without a view. Defined in 8.1.4.
– No clear difference · could be chance
6.7 Days on market: no clear difference
The median is 33 days for homes with a view and 26 days for homes without a view. Defined in 8.1.5.
– No clear difference · could be chance
6.8 Discount from original list: no clear difference
The average is 3.7% for homes with a view and 8.7% for homes without a view. Defined in 8.1.6.
– No clear difference · could be chance
6.9 How often: price cut before sale, seller paid closing costs or repairs
Each bar is the share of homes in the group, in percent.
43% of homes with a view had a price cut before sale, against 40% of homes without a view. Defined in 8.1.7.
14% of homes with a view had the seller pay closing costs or repairs, against 55% of homes without a view. Defined in 8.1.8.
Price cut before sale: – No clear difference · could be chance
Seller paid closing costs or repairs: – No clear difference · could be chance
6.10 The numbers: price and size
View7 sales
No view20 sales
All27 sales
Real difference?
Net sale price average
$636,200
$509,685
$542,485
unclear
Net price per SF average
$388
$342
$354
unclear
Living area average
1,666
1,441
1,499
unclear
Year built median
2017
1985
2013
unclear
6.11 The numbers: selling
View7 sales
No view20 sales
All27 sales
Real difference?
Days on market median
33
26
30
unclear
Discount from original list average
3.7%
8.7%
7.4%
unclear
Price cut before sale
43%
40%
41%
unclear
Seller paid closing costs or repairs
14%
55%
44%
unclear
Prices, price per SF, living area and discount are averages; days on market and year built are medians. The test behind each verdict is in 8.3.4.
7. New constructionBasic statistics · 3 sales · October 31, 2025 – October 30, 2026
Homes sold new by the builder in the same 365 days. They are left out of every other section and shown here as basic figures only: 3 sales, no groups, no tests.
Note: these are only the new-construction sales reported in ABOR MLS. Builders often sell homes without listing them in the MLS, so these figures do not necessarily represent all new-construction sales in Chernosky 09.
Measure
Average
Median
Sales
3
Net sale price
$981,035
$1,005,000
Net price per SF
$404
$375
Living area (SF)
2,251
2,678
Days on market
138
94
Discount from original list
10.1%
7.7%
Price cut before sale
67% of sales
Seller paid closing costs or repairs
100% of sales
Year built
2023–2026
Same definitions as the rest of the study (section 8). New construction = NewConstructionYN true, or PropertyCondition “New Construction” or “Under Construction”.
8. AppendixMeasures, methods and tests
Each measure and method three ways: in plain words, as statistics, and with the data from this study.
8.1 Measures
8.1.1 Net sale price
In simple terms
What the seller actually kept: the closing price, less money the seller gave back to the buyer for closing costs or repairs. It is the truest price for comparing homes.
Statistically
Net = ClosePrice − ACTRIS_BuyersClsgCostPdbySell − ACTRIS_RepairsAmount (a blank counts as $0). Summarized by the arithmetic mean in the slices.
The data
29 resale sales. Average $540,055; median $462,400; standard deviation $320,853; middle half (25th–75th percentile) $327,410–$737,000; lowest $150,000, highest $1,410,000. 13 sales had a seller payment; their median payment was $7,750.
8.1.2 Net price per SF
In simple terms
Net sale price divided by the heated and cooled square feet. It puts homes of different sizes on the same footing: did buyers pay more for each square foot, not just for more square feet?
Statistically
psf = Net ÷ LivingArea, per sale; summarized by the mean of the per-sale ratios.
The data
29 resale sales. Average $356; median $355; standard deviation $127; middle half (25th–75th percentile) $305–$448; lowest $103, highest $582.
8.1.3 Living area
In simple terms
The heated and cooled space, as listed in the MLS. Garages and porches are not counted.
Statistically
RESO LivingArea, in square feet. Sales under 400 SF are treated as entry errors and left out.
The data
29 resale sales. Average 1,498; median 1,256; standard deviation 603; middle half (25th–75th percentile) 1,031–2,131; lowest 672, highest 2,678.
8.1.4 Year built
In simple terms
The year the home was finished, as listed in the MLS. It shows whether a group leans to older or newer phases of the community.
Statistically
RESO YearBuilt; summarized by the median, with the 25th–75th percentile (middle half) on the charts.
The data
29 resale sales. Average 1990; median 2013; standard deviation 35; middle half (25th–75th percentile) 1958–2019; lowest 1927, highest 2024.
8.1.5 Days on market
In simple terms
How many days the home was on the market before the buyer's offer was accepted, counting any earlier listing periods (relists). This is the days on market agents and clients quote.
Statistically
CDOM = max(CumulativeDaysOnMarket, DaysOnMarket, PurchaseContractDate − ListingContractDate). The MLS counter can freeze at a price change, so the contract-date gap is a floor. Summarized by the median, because a few homes that sat for months pull an average up.
The data
29 resale sales. Average 59; median 31; standard deviation 90; middle half (25th–75th percentile) 10–71; lowest 0, highest 471. 1 sales went under contract on their listing date (0 days).
8.1.6 Discount from original list
In simple terms
How far below the first asking price the home sold, after seller payments. It measures how much negotiating room sellers gave up. A negative figure means the home sold above its first asking price.
Statistically
Discount % = (OriginalListPrice − Net) ÷ OriginalListPrice × 100, per sale; summarized by the mean.
The data
29 resale sales. Average 8.4%; median 6.4%; standard deviation 10.8%; middle half (25th–75th percentile) 1.9%–11.6%; lowest −13.3%, highest 42.4%. 4 sales closed above their first asking price.
8.1.7 Price cut before sale
In simple terms
The asking price was lowered at least once before the home went under contract.
Statistically
Indicator: ListPrice at close < OriginalListPrice. Reported as the share of sales (%).
The data
13 of 29 resale sales (44.8%).
8.1.8 Seller paid closing costs or repairs
In simple terms
The seller paid some of the buyer's closing costs or repairs.
Statistically
Indicator: ACTRIS_BuyersClsgCostPdbySell + ACTRIS_RepairsAmount > 0. Reported as the share of sales (%).
The data
13 of 29 resale sales (44.8%).
8.1.9 Has a view
In simple terms
The MLS says the home looks over something: a greenbelt or park, trees, golf course, hill country, water and similar.
Statistically
View = the View field holds any entry other than “None”, “Neighborhood” or “See Remarks”. No view = only “None” and/or “Neighborhood”. A record whose only entry is “See Remarks” cannot be classified and is left out of the view slice.
The data
7 sales with a view, 20 without, 2 unclassified. Most common View entries: None 15, Neighborhood 7, City 4, See Remarks 2, Trees/Woods 2, City Lights 1, Downtown 1, Skyline 1.
8.2 Methods
8.2.1 Data source
In simple terms
Every figure comes from the Austin Board of REALTORS® MLS, read live by ALEX. No figure is estimated or typed in.
Statistically
Bridge Interactive RESO Web API (OData), ABOR dataset, every field returned. Filter: StandardStatus = Closed, PropertyType = Residential, City = Austin, SubdivisionName contains any of “chernosky”, “em franklin”, “chernosky sub”, “e m franklin sub”, “em franklin sub” (case-insensitive). A record is kept when its subdivision name belongs to the Chernosky 09 family, the same rule comparable sales use (it includes Em Franklin 2nd Resub, proven adjacent and priced alike).
The data
Pulled October 31, 2026: 39 closed Chernosky 09 records over the prior year, in ZIP 78721, 78741, 78702, 78723. 19 subdivision spellings kept, the most common: Chernosky 09 (6); Chernosky 12 (5); Chernosky 11 (4); Chernosky 16 (3); Chernosky 17 (3); Chernosky 10 (2); Chernosky 15 (2); Chernosky 08 (2); Chernosky 04 (2); CHERNOSKY 16 (1); Chernosky Sub # 16 Un 2 (1); Chernosky No 09 (1); and 7 more (7 records). Names found by the search but not part of Chernosky 09, left out: Em Franklin Second (1); Chernosky M E (1).
8.2.2 Study window
In simple terms
The most recent 365 days of closed sales: recent enough to describe today's market, long enough to give each group plenty of sales. The usual window is 180 days; it holds only 17 resale sales here (under 80), so the full year is used.
Statistically
CloseDate from October 31, 2025 to October 30, 2026 inclusive.
The data
32 single-family sales in the window: 29 resale, 3 new construction.
8.2.3 Resale and new construction
In simple terms
A resale home was previously owned. New construction is sold by the builder and behaves differently, so it is kept out of every analysis and reported once on its own.
Statistically
New construction = NewConstructionYN true, or PropertyCondition contains “New Construction” or “Under Construction”. Everything else is resale.
The data
29 resale; 3 new construction.
8.2.4 Sales left out
In simple terms
A few records cannot be used as entered and are left out before any analysis.
Statistically
Excluded: PropertySubType other than Single Family Residence; no OriginalListPrice; LivingArea under 400 SF; seller payments above 10% of ClosePrice (treated as entry errors).
The data
7 sale(s) other than single-family homes (condo, townhome and similar)
8.2.5 Quartiles and groups
In simple terms
Sales lined up from lowest to highest and cut into four groups of about equal size. Each group is named by its range, for example “Under $327K”.
Statistically
Sort by the slicing variable; cut k sits at round(nk/4), k = 1…3. A cut that would split tied values moves to the nearer edge of the tie. A group under 3 sales merges into its smaller neighbor. Range names use the next group's lowest value (“Under”) and the previous group's highest value (“Over”/“After”).
The data
Quartiles by net sale price: Under $327K: $150,000–$300,000 (7 sales); $327K–$460K: $327,410–$460,000 (7 sales); $462K–$737K: $462,400–$737,000 (8 sales); Over $737K: $758,000–$1,410,000 (7 sales) Quartiles by living area: Under 1,031 SF: 672–1,020 SF (7 sales); 1,031–1,236 SF: 1,031–1,236 SF (7 sales); 1,256–2,131 SF: 1,256–2,131 SF (8 sales); Over 2,131 SF: 2,137–2,678 SF (7 sales) Quartiles by year built: Before 1958: 1927–1951 (6 sales); 1958–2006: 1958–2006 (8 sales); 2013–2019: 2013–2019 (8 sales); After 2019: 2020–2024 (7 sales) View and no view: View: MLS lists a view (7 sales); No view: None or Neighborhood (20 sales)
8.2.6 Average and median
In simple terms
The average adds the values and divides by how many; one very expensive home can pull it up. The median is the middle value, with half above and half below.
Statistically
Mean x̄ = (1/n) Σ xᵢ; median = 50th percentile. Price, price per SF, living area and discount use the mean; days on market and year built use the median (skewed or whole-year values).
The data
Net sale price: average $540,055, median $462,400. Days on market: average 59, median 31: the average is pulled up by a few long listings.
8.2.7 Kruskal–Wallis test
In simple terms
Checks whether a measure really differs across the four groups of a slice. It uses each sale's rank, not its value, so a few extreme sales cannot drive the answer.
Statistically
H = [12/(n(n+1))] Σ Rⱼ²/nⱼ − 3(n+1), compared with χ² on k − 1 degrees of freedom (Kruskal & Wallis, 1952). Effect size ε² = H/(n − 1): ≥ .01 small, ≥ .06 medium, ≥ .14 large (Tomczak & Tomczak, 2014). A slice is tested only when every group has at least 5 sales; smaller groups are described, not tested.
The data
Run on every measure in sections 3–5; each result is in 8.3.
8.2.8 Mann–Whitney U test
In simple terms
The same check when there are only two groups: view against no view.
Statistically
Two-sided U test (Mann & Whitney, 1947). Effect size = rank-biserial correlation |1 − 2U/(n₁n₂)|: ≥ .10 small, ≥ .30 medium, ≥ .50 large (Kerby, 2014; Cohen, 1988).
The data
Run on every measure in section 6; results in 8.3.
8.2.9 Chi-square test
In simple terms
Checks whether a yes/no share (price cut, seller payment, view) differs between groups more than chance would.
Statistically
Pearson χ² on the 2 × k table of counts, no continuity correction (Pearson, 1900). Effect size Cramér's V = √(χ²/n): ≥ .10 small, ≥ .30 medium, ≥ .50 large (Cramér, 1946).
The data
Run on the three shares in every slice; results in 8.3.
8.2.10 Real difference (significance)
In simple terms
“Real difference” means a gap this large would be very unlikely if the groups were really alike. Because many measures are checked in each slice, the bar is set higher than usual.
Statistically
Significant when p < 0.05 ÷ m, where m is the number of measures tested in that slice (Bonferroni; Dunn, 1961). The slicing variable itself differs by design and is not tested.
The data
Quartiles by net sale price: m = 8, threshold p < 0.0063; Quartiles by living area: m = 8, threshold p < 0.0063; Quartiles by year built: m = 8, threshold p < 0.0063; View and no view: m = 8, threshold p < 0.0063
8.2.11 Size of a difference
In simple terms
A difference can be real but small. The size word (small, medium, large) says how much the groups pull apart.
Statistically
ε² for Kruskal–Wallis, rank-biserial r for Mann–Whitney, Cramér's V for chi-square, with the thresholds above; below the small threshold the size is “negligible”.
The data
5 real differences across the four slices; sizes are listed in 8.3.
8.2.12 Rounding in the text
In simple terms
Headings and sentences round figures so they read easily; the tables at the end of each section give them in full.
Statistically
Prices in headings round to the nearest $1K; price per SF and days on market to the nearest whole number; living area to the nearest 10 SF; shares and percentage gaps to whole percents.
The data
Days on market is always shown in days.
8.3 Test results
Every test behind every gold box. Statistic, degrees of freedom (df), p-value, the threshold it must beat, and the size of the difference.
8.3.1 Quartiles by net sale price
Measure
Test
Statistic
df
p-value
Threshold
Real difference?
Effect size
Size
Net price per SF
Kruskal–Wallis
H = 13.10
3
0.0044
p < 0.0063
Yes
ε² = 0.468
large
Living area
Kruskal–Wallis
H = 13.24
3
0.0042
p < 0.0063
Yes
ε² = 0.473
large
Year built
Kruskal–Wallis
H = 16.46
3
0.0009
p < 0.0063
Yes
ε² = 0.588
large
Days on market
Kruskal–Wallis
H = 2.70
3
0.4401
p < 0.0063
Unclear
ε² = 0.096
medium
Discount from original list
Kruskal–Wallis
H = 4.76
3
0.1904
p < 0.0063
Unclear
ε² = 0.170
large
Price cut before sale
Chi-square
χ² = 1.78
3
0.6193
p < 0.0063
Unclear
Cramér’s V = 0.248
small
Seller paid closing costs or repairs
Chi-square
χ² = 2.14
3
0.5436
p < 0.0063
Unclear
Cramér’s V = 0.272
small
Has a view
Chi-square
χ² = 5.60
3
0.1330
p < 0.0063
Unclear
Cramér’s V = 0.439
medium
8.3.2 Quartiles by living area
Measure
Test
Statistic
df
p-value
Threshold
Real difference?
Effect size
Size
Net sale price
Kruskal–Wallis
H = 14.99
3
0.0018
p < 0.0063
Yes
ε² = 0.535
large
Net price per SF
Kruskal–Wallis
H = 5.26
3
0.1535
p < 0.0063
Unclear
ε² = 0.188
large
Year built
Kruskal–Wallis
H = 3.01
3
0.3896
p < 0.0063
Unclear
ε² = 0.108
medium
Days on market
Kruskal–Wallis
H = 7.08
3
0.0693
p < 0.0063
Unclear
ε² = 0.253
large
Discount from original list
Kruskal–Wallis
H = 7.53
3
0.0568
p < 0.0063
Unclear
ε² = 0.269
large
Price cut before sale
Chi-square
χ² = 6.40
3
0.0936
p < 0.0063
Unclear
Cramér’s V = 0.470
medium
Seller paid closing costs or repairs
Chi-square
χ² = 2.14
3
0.5436
p < 0.0063
Unclear
Cramér’s V = 0.272
small
Has a view
Chi-square
χ² = 1.60
3
0.6600
p < 0.0063
Unclear
Cramér’s V = 0.235
small
8.3.3 Quartiles by year built
Measure
Test
Statistic
df
p-value
Threshold
Real difference?
Effect size
Size
Net sale price
Kruskal–Wallis
H = 12.46
3
0.0060
p < 0.0063
Yes
ε² = 0.445
large
Net price per SF
Kruskal–Wallis
H = 10.25
3
0.0166
p < 0.0063
Unclear
ε² = 0.366
large
Living area
Kruskal–Wallis
H = 7.74
3
0.0517
p < 0.0063
Unclear
ε² = 0.276
large
Days on market
Kruskal–Wallis
H = 4.56
3
0.2073
p < 0.0063
Unclear
ε² = 0.163
large
Discount from original list
Kruskal–Wallis
H = 3.53
3
0.3168
p < 0.0063
Unclear
ε² = 0.126
medium
Price cut before sale
Chi-square
χ² = 5.70
3
0.1270
p < 0.0063
Unclear
Cramér’s V = 0.443
medium
Seller paid closing costs or repairs
Chi-square
χ² = 1.52
3
0.6787
p < 0.0063
Unclear
Cramér’s V = 0.229
small
Has a view
Chi-square
χ² = 1.63
3
0.6527
p < 0.0063
Unclear
Cramér’s V = 0.237
small
8.3.4 View and no view
Measure
Test
Statistic
df
p-value
Threshold
Real difference?
Effect size
Size
Net sale price
Mann–Whitney U
U = 97.00
—
0.1425
p < 0.0063
Unclear
rank-biserial r = 0.386
medium
Net price per SF
Mann–Whitney U
U = 86.00
—
0.3998
p < 0.0063
Unclear
rank-biserial r = 0.229
small
Living area
Mann–Whitney U
U = 84.00
—
0.4640
p < 0.0063
Unclear
rank-biserial r = 0.200
small
Year built
Mann–Whitney U
U = 96.50
—
0.1497
p < 0.0063
Unclear
rank-biserial r = 0.379
medium
Days on market
Mann–Whitney U
U = 80.50
—
0.5798
p < 0.0063
Unclear
rank-biserial r = 0.150
small
Discount from original list
Mann–Whitney U
U = 45.00
—
0.1795
p < 0.0063
Unclear
rank-biserial r = 0.357
medium
Price cut before sale
Chi-square
χ² = 0.02
1
0.8947
p < 0.0063
Unclear
Cramér’s V = 0.025
negligible
Seller paid closing costs or repairs
Chi-square
χ² = 3.48
1
0.0621
p < 0.0063
Unclear
Cramér’s V = 0.359
medium
8.4 Data notes
Left out of the analysis: 3 new-construction sales (basic statistics only, section 7); 7 sale(s) other than single-family homes (condo, townhome and similar). Statistics: Python, NumPy 2.5.3, SciPy 1.18.1.
8.5 References
Cohen, J. (1988). Statistical Power Analysis for the Behavioral Sciences (2nd ed.). Erlbaum.
Cramér, H. (1946). Mathematical Methods of Statistics. Princeton University Press.
Dunn, O. J. (1961). Multiple comparisons among means. JASA, 56(293), 52–64.
Kerby, D. S. (2014). The simple difference formula: an approach to teaching nonparametric correlation. Comprehensive Psychology, 3, 11.IT.3.1.
Kruskal, W. H., & Wallis, W. A. (1952). Use of ranks in one-criterion variance analysis. JASA, 47(260), 583–621.
Mann, H. B., & Whitney, D. R. (1947). On a test of whether one of two random variables is stochastically larger than the other. Annals of Mathematical Statistics, 18(1), 50–60.
Pearson, K. (1900). On the criterion that a given system of deviations… Philosophical Magazine, 50(302), 157–175.
Tomczak, M., & Tomczak, E. (2014). The need to report effect size estimates revisited. Trends in Sport Sciences, 21(1), 19–25.