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
46
single-family resale homes
Median net sale price
$261,250
average $251,837
Median net price per SF
$163
average $163
Median days on market
56 days
average 82 days
1. SummaryResale homes · 46 sales · November 7, 2025 – November 6, 2026
This study looks at the 46 resale homes sold in Austins Colony in the 365 days to November 6, 2026. A full year is used because only 23 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 sold46 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 · 46 sales · November 7, 2025 – November 6, 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 $280K are about 590 SF (45%) larger than homes under $226K.
3.1 Key differences
The top group against the bottom group. Only real differences are listed. Section 8 explains each measure.
Under $226K$226K–$260K$262K–$280KOver $280K
Higher-priced homes Over $280K
Are much larger.
Lower-priced homes Under $226K
Are much smaller.
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 $226K
$226K–$260K
$262K–$280K
Over $280K
Real difference?
Net price per SF
$153 per SF
$170 per SF
$168 per SF
$161 per SF
unclear
Living area
1,296 SFSmallest
1,465 SF
1,643 SF
1,883 SFLargest
✓ large
Year built
2001
2008
2014
2010
unclear
Days on market
58 days
113 days
57 days
38 days
unclear
Discount from original list
12.8%
9.9%
5.8%
5.2%
unclear
Price cut before sale
75%
64%
55%
42%
unclear
Seller paid closing costs or repairs
42%
82%
55%
92%
unclear
Has a view
0%
0%
9%
8%
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 Net price per SF: no clear difference
The average is $161 per SF for homes over $280K and $153 per SF for homes under $226K. It does not move in a straight line; homes $226K–$260K are highest. Defined in 8.1.2.
– No clear difference · could be chance
3.4 Homes over $280K are about 590 SF (45%) larger than homes under $226K
The average is 1,883 SF for homes over $280K and 1,296 SF for homes under $226K. It rises step by step from the lowest range to the highest. Defined in 8.1.3.
✓ Real difference · large
3.5 Year built: no clear difference
The median is 2010 for homes over $280K and 2001 for homes under $226K. It does not move in a straight line; homes $262K–$280K are highest. Defined in 8.1.4.
– No clear difference · could be chance
3.6 Days on market: no clear difference
The median is 38 days for homes over $280K and 58 days for homes under $226K. It does not move in a straight line; homes $226K–$260K 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 5.2% for homes over $280K and 12.8% for homes under $226K. 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.
42% of homes over $280K had a price cut before sale, against 75% of homes under $226K. Defined in 8.1.7.
92% of homes over $280K had the seller pay closing costs or repairs, against 42% of homes under $226K. Defined in 8.1.8.
8% of homes over $280K have a view, against 0% of homes under $226K. 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 $226K12 sales
$226K–$260K11 sales
$262K–$280K11 sales
Over $280K12 sales
All46 sales
Real difference?
Net sale price average
$193,208
$243,491
$270,720
$300,806
$251,837
by design
Net price per SF average
$153
$170
$168
$161
$163
unclear
Living area average
1,296
1,465
1,643
1,883
1,572
✓ large
Year built median
2001
2008
2014
2010
2006
unclear
3.10 The numbers: selling
Under $226K12 sales
$226K–$260K11 sales
$262K–$280K11 sales
Over $280K12 sales
All46 sales
Real difference?
Days on market median
58
113
57
38
56
unclear
Discount from original list average
12.8%
9.9%
5.8%
5.2%
8.4%
unclear
Price cut before sale
75%
64%
55%
42%
59%
unclear
Seller paid closing costs or repairs
42%
82%
55%
92%
67%
unclear
Has a view
0%
0%
9%
8%
4%
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 · 46 sales · November 7, 2025 – November 6, 2026
Sales ranked by living area and cut into four equal groups, from the smallest homes to the largest.
Bottom line
Homes over 1,795 SF sell for about $72K (33%) more than homes under 1,358 SF.
Homes over 1,795 SF sell for about $34 per SF (19%) less than homes under 1,358 SF.
4.1 Key differences
The top group against the bottom group. Only real differences are listed. Section 8 explains each measure.
Under 1,358 SF1,358–1,514 SF1,522–1,795 SFOver 1,795 SF
Larger homes Over 1,795 SF
Sell for much more.
Sell for less per square foot.
Smaller homes Under 1,358 SF
Sell for much less.
Sell for more per square foot.
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 1,358 SF
1,358–1,514 SF
1,522–1,795 SF
Over 1,795 SF
Real difference?
Net sale price
$217KLowest
$241K
$261K
$289KHighest
✓ large
Net price per SF
$179 per SFHighest
$169 per SF
$157 per SF
$146 per SFLowest
✓ large
Year built
2006
2010
2005
2006
unclear
Days on market
63 days
41 days
60 days
56 days
unclear
Discount from original list
11.2%
6.9%
7.4%
8.0%
unclear
Price cut before sale
75%
36%
64%
58%
unclear
Seller paid closing costs or repairs
67%
64%
64%
75%
unclear
Has a view
8%
0%
0%
8%
unclear
4.3 Homes over 1,795 SF sell for about $72K (33%) more than homes under 1,358 SF
The average is $289K for homes over 1,795 SF and $217K for homes under 1,358 SF. It rises step by step from the lowest range to the highest. Defined in 8.1.1.
✓ Real difference · large
4.4 Homes over 1,795 SF sell for about $34 per SF (19%) less than homes under 1,358 SF
The average is $146 per SF for homes over 1,795 SF and $179 per SF for homes under 1,358 SF. It falls step by step from the lowest range to the highest. Defined in 8.1.2.
✓ Real difference · large
4.5 Year built: no clear difference
The median is 2006 for homes over 1,795 SF and 2006 for homes under 1,358 SF. It does not move in a straight line; homes 1,358–1,514 SF are highest. Defined in 8.1.4.
– No clear difference · could be chance
4.6 Days on market: no clear difference
The median is 56 days for homes over 1,795 SF and 63 days for homes under 1,358 SF. It does not move in a straight line; homes under 1,358 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 8.0% for homes over 1,795 SF and 11.2% for homes under 1,358 SF. It does not move in a straight line; homes under 1,358 SF are 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.
58% of homes over 1,795 SF had a price cut before sale, against 75% of homes under 1,358 SF. Defined in 8.1.7.
75% of homes over 1,795 SF had the seller pay closing costs or repairs, against 67% of homes under 1,358 SF. Defined in 8.1.8.
8% of homes over 1,795 SF have a view, against 8% of homes under 1,358 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 1,358 SF12 sales
1,358–1,514 SF11 sales
1,522–1,795 SF11 sales
Over 1,795 SF12 sales
All46 sales
Real difference?
Net sale price average
$216,632
$241,066
$260,799
$288,699
$251,837
✓ large
Net price per SF average
$179
$169
$157
$146
$163
✓ large
Living area average
1,210
1,429
1,665
1,982
1,572
by design
Year built median
2006
2010
2005
2006
2006
unclear
4.10 The numbers: selling
Under 1,358 SF12 sales
1,358–1,514 SF11 sales
1,522–1,795 SF11 sales
Over 1,795 SF12 sales
All46 sales
Real difference?
Days on market median
63
41
60
56
56
unclear
Discount from original list average
11.2%
6.9%
7.4%
8.0%
8.4%
unclear
Price cut before sale
75%
36%
64%
58%
59%
unclear
Seller paid closing costs or repairs
67%
64%
64%
75%
67%
unclear
Has a view
8%
0%
0%
8%
4%
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 · 46 sales · November 7, 2025 – November 6, 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: no measure differs enough between the groups to rule out chance.
5.1 Key differences
The top group against the bottom group: no measure differs enough to rule out chance.
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 2001
2001–2005
2006–2014
After 2014
Real difference?
Net sale price
$226K
$240K
$250K
$286K
unclear
Net price per SF
$151 per SF
$158 per SF
$162 per SF
$177 per SF
unclear
Living area
1,510 SF
1,560 SF
1,570 SF
1,640 SF
unclear
Days on market
74 days
48 days
64 days
28 days
unclear
Discount from original list
13.1%
8.0%
7.5%
5.3%
unclear
Price cut before sale
67%
78%
58%
38%
unclear
Seller paid closing costs or repairs
58%
56%
75%
77%
unclear
Has a view
0%
0%
8%
8%
unclear
5.3 Net sale price: no clear difference
The average is $286K for homes built after 2014 and $226K for homes built before 2001. It rises step by step from the lowest range to the highest. Defined in 8.1.1.
– No clear difference · could be chance
5.4 Net price per SF: no clear difference
The average is $177 per SF for homes built after 2014 and $151 per SF for homes built before 2001. It rises step by step from the lowest range to the highest. Defined in 8.1.2.
– No clear difference · could be chance
5.5 Living area: no clear difference
The average is 1,640 SF for homes built after 2014 and 1,510 SF for homes built before 2001. It rises step by step from the lowest range to the highest. Defined in 8.1.3.
– No clear difference · could be chance
5.6 Days on market: no clear difference
The median is 28 days for homes built after 2014 and 74 days for homes built before 2001. It does not move in a straight line; homes built before 2001 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 5.3% for homes built after 2014 and 13.1% for homes built before 2001. It falls step by step from the lowest range to the 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.
38% of homes built after 2014 had a price cut before sale, against 67% of homes built before 2001. Defined in 8.1.7.
77% of homes built after 2014 had the seller pay closing costs or repairs, against 58% of homes built before 2001. Defined in 8.1.8.
8% of homes built after 2014 have a view, against 0% of homes built before 2001. 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 200112 sales
2001–20059 sales
2006–201412 sales
After 201413 sales
All46 sales
Real difference?
Net sale price average
$225,559
$240,133
$249,512
$286,341
$251,837
unclear
Net price per SF average
$151
$158
$162
$177
$163
unclear
Living area average
1,510
1,560
1,570
1,640
1,572
unclear
Year built median
1996
2002
2007
2018
2006
by design
5.10 The numbers: selling
Before 200112 sales
2001–20059 sales
2006–201412 sales
After 201413 sales
All46 sales
Real difference?
Days on market median
74
48
64
28
56
unclear
Discount from original list average
13.1%
8.0%
7.5%
5.3%
8.4%
unclear
Price cut before sale
67%
78%
58%
38%
59%
unclear
Seller paid closing costs or repairs
58%
56%
75%
77%
67%
unclear
Has a view
0%
0%
8%
8%
4%
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 · 46 sales · November 7, 2025 – November 6, 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: too few sales to test.
6.1 Key differences
The top group against the bottom group: no measure differs enough to rule out chance.
6.3 Net sale price: described, not tested
The average is $282K for homes with a view and $252K for homes without a view. Defined in 8.1.1.
Not tested: too few sales.
6.4 Net price per SF: described, not tested
The average is $185 per SF for homes with a view and $160 per SF for homes without a view. Defined in 8.1.2.
Not tested: too few sales.
6.5 Living area: described, not tested
The average is 1,554 SF for homes with a view and 1,592 SF for homes without a view. Defined in 8.1.3.
Not tested: too few sales.
6.6 Year built: described, not tested
The median is 2012 for homes with a view and 2006 for homes without a view. Defined in 8.1.4.
Not tested: too few sales.
6.7 Days on market: described, not tested
The median is 22 days for homes with a view and 56 days for homes without a view. Defined in 8.1.5.
Not tested: too few sales.
6.8 Discount from original list: described, not tested
The average is 0.1% for homes with a view and 8.5% for homes without a view. Defined in 8.1.6.
Not tested: too few sales.
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.
0% of homes with a view had a price cut before sale, against 60% of homes without a view. Defined in 8.1.7.
50% of homes with a view had the seller pay closing costs or repairs, against 67% of homes without a view. Defined in 8.1.8.
Price cut before sale: Not tested: too few sales.
Seller paid closing costs or repairs: Not tested: too few sales.
6.10 The numbers: price and size
View2 sales
No view42 sales
All44 sales
Net sale price average
$281,638
$251,758
$253,116
Net price per SF average
$185
$160
$161
Living area average
1,554
1,592
1,590
Year built median
2012
2006
2006
6.11 The numbers: selling
View2 sales
No view42 sales
All44 sales
Days on market median
22
56
54
Discount from original list average
0.1%
8.5%
8.1%
Price cut before sale
0%
60%
57%
Seller paid closing costs or repairs
50%
67%
66%
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 · 0 sales · November 7, 2025 – November 6, 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: 0 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 Austins Colony.
No new-construction sales were reported in ABOR MLS in this window.
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
46 resale sales. Average $251,837; median $261,250; standard deviation $42,687; middle half (25th–75th percentile) $212,250–$282,250; lowest $169,000, highest $349,500. 31 sales had a seller payment; their median payment was $7,500.
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
46 resale sales. Average $163; median $163; standard deviation $24; middle half (25th–75th percentile) $146–$183; lowest $102, highest $211.
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
46 resale sales. Average 1,572; median 1,518; standard deviation 308; middle half (25th–75th percentile) 1,356–1,804; lowest 1,075, highest 2,125.
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
46 resale sales. Average 2006; median 2006; standard deviation 9; middle half (25th–75th percentile) 2000–2015; lowest 1986, highest 2020.
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
46 resale sales. Average 82; median 56; standard deviation 80; middle half (25th–75th percentile) 22–120; lowest 8, highest 325. 0 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
46 resale sales. Average 8.4%; median 7.9%; standard deviation 8.0%; middle half (25th–75th percentile) 3.0%–12.9%; lowest −8.4%, highest 37.0%. 2 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
27 of 46 resale sales (58.7%).
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
31 of 46 resale sales (67.4%).
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
2 sales with a view, 42 without, 2 unclassified. Most common View entries: None 31, Neighborhood 11, See Remarks 2, Pasture 1, City 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
ABOR MLS via secure APIs, read from ALEX's copy of the MLS (refreshed every 15 minutes; this pull as of 2026-11-07 13:30 UTC), every field. Filter: StandardStatus = Closed, PropertyType = Residential, City = Austin, SubdivisionName contains any of “austins colony”, “austin's colony” (case-insensitive). A record is kept when its subdivision name belongs to the Austins Colony family, the same rule comparable sales use.
The data
Pulled November 7, 2026: 47 closed Austins Colony records over the prior year, in ZIP 78725. 20 subdivision spellings kept, the most common: Austins Colony Ph 03 (7); Austins Colony Ph 02 (6); Austins Colony (5); AUSTIN'S COLONY (5); Austins Colony Ph 05 Sec 01 (3); Austin's Colony (3); Austins Colony Ph 05 Sec 02 (2); AUSTIN'S COLONY SEC 6A (2); Austins Colony Sec 6B (2); Austins Colony Sec 7A (2); Austins Colony Sec 6A (1); AUSTIN'S COLONY SEC 7A (1); and 8 more (8 records). Names found by the search but not part of Austins Colony, left out: AUSTIN'S COLONY PHS 3 (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 23 resale sales here (under 80), so the full year is used.
Statistically
CloseDate from November 7, 2025 to November 6, 2026 inclusive.
The data
46 single-family sales in the window: 46 resale, 0 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
46 resale; 0 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
1 sale(s) with concessions above 10% of price
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 $226K”.
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 $226K: $169,000–$207,500 (12 sales); $226K–$260K: $226,500–$260,000 (11 sales); $262K–$280K: $262,500–$280,000 (11 sales); Over $280K: $283,000–$349,500 (12 sales) Quartiles by living area: Under 1,358 SF: 1,075–1,355 SF (12 sales); 1,358–1,514 SF: 1,358–1,514 SF (11 sales); 1,522–1,795 SF: 1,522–1,795 SF (11 sales); Over 1,795 SF: 1,807–2,125 SF (12 sales) Quartiles by year built: Before 2001: 1986–2000 (12 sales); 2001–2005: 2001–2005 (9 sales); 2006–2014: 2006–2014 (12 sales); After 2014: 2015–2020 (13 sales) View and no view: View: MLS lists a view (2 sales); No view: None or Neighborhood (42 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 $251,837, median $261,250. Days on market: average 82, median 56: 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
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
3 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 = 3.58
3
0.3110
p < 0.0063
Unclear
ε² = 0.079
medium
Living area
Kruskal–Wallis
H = 23.42
3
< 0.0001
p < 0.0063
Yes
ε² = 0.521
large
Year built
Kruskal–Wallis
H = 10.49
3
0.0149
p < 0.0063
Unclear
ε² = 0.233
large
Days on market
Kruskal–Wallis
H = 2.65
3
0.4495
p < 0.0063
Unclear
ε² = 0.059
small
Discount from original list
Kruskal–Wallis
H = 8.61
3
0.0350
p < 0.0063
Unclear
ε² = 0.191
large
Price cut before sale
Chi-square
χ² = 2.94
3
0.4010
p < 0.0063
Unclear
Cramér’s V = 0.253
small
Seller paid closing costs or repairs
Chi-square
χ² = 8.70
3
0.0336
p < 0.0063
Unclear
Cramér’s V = 0.435
medium
Has a view
Chi-square
χ² = 2.10
3
0.5521
p < 0.0063
Unclear
Cramér’s V = 0.214
small
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 = 19.57
3
0.0002
p < 0.0063
Yes
ε² = 0.435
large
Net price per SF
Kruskal–Wallis
H = 14.85
3
0.0019
p < 0.0063
Yes
ε² = 0.330
large
Year built
Kruskal–Wallis
H = 0.85
3
0.8386
p < 0.0063
Unclear
ε² = 0.019
small
Days on market
Kruskal–Wallis
H = 1.87
3
0.6005
p < 0.0063
Unclear
ε² = 0.041
small
Discount from original list
Kruskal–Wallis
H = 4.35
3
0.2259
p < 0.0063
Unclear
ε² = 0.097
medium
Price cut before sale
Chi-square
χ² = 3.69
3
0.2969
p < 0.0063
Unclear
Cramér’s V = 0.283
small
Seller paid closing costs or repairs
Chi-square
χ² = 0.46
3
0.9276
p < 0.0063
Unclear
Cramér’s V = 0.100
small
Has a view
Chi-square
χ² = 1.92
3
0.5899
p < 0.0063
Unclear
Cramér’s V = 0.204
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 = 12.25
3
0.0066
p < 0.0063
Unclear
ε² = 0.272
large
Net price per SF
Kruskal–Wallis
H = 7.84
3
0.0493
p < 0.0063
Unclear
ε² = 0.174
large
Living area
Kruskal–Wallis
H = 0.89
3
0.8269
p < 0.0063
Unclear
ε² = 0.020
small
Days on market
Kruskal–Wallis
H = 2.86
3
0.4136
p < 0.0063
Unclear
ε² = 0.064
medium
Discount from original list
Kruskal–Wallis
H = 6.04
3
0.1095
p < 0.0063
Unclear
ε² = 0.134
medium
Price cut before sale
Chi-square
χ² = 3.86
3
0.2767
p < 0.0063
Unclear
Cramér’s V = 0.290
small
Seller paid closing costs or repairs
Chi-square
χ² = 1.88
3
0.5987
p < 0.0063
Unclear
Cramér’s V = 0.202
small
Has a view
Chi-square
χ² = 1.76
3
0.6231
p < 0.0063
Unclear
Cramér’s V = 0.196
small
8.3.4 View and no view
Too few sales in a group to test.
8.4 Data notes
Left out of the analysis: 0 new-construction sales (basic statistics only, section 7); 1 sale(s) with concessions above 10% of price. 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.