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
33
single-family resale homes
Median net sale price
$260,000
average $249,118
Median net price per SF
$165
average $164
Median days on market
57 days
average 82 days
1. SummaryResale homes · 33 sales · October 26, 2025 – October 25, 2026
This study looks at the 33 resale homes sold in Austins Colony in the 365 days to October 25, 2026. A full year is used because only 15 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 sold33 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 · 33 sales · October 26, 2025 – October 25, 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 $276K are about 560 SF (44%) 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–$248K$260K–$276KOver $276K
Higher-priced homes Over $276K
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–$248K
$260K–$276K
Over $276K
Real difference?
Net price per SF
$155 per SF
$176 per SF
$162 per SF
$162 per SF
unclear
Living area
1,274 SFSmallest
1,374 SF
1,685 SF
1,832 SFLargest
✓ large
Year built
2001
2005
2006
2006
unclear
Days on market
58 days
140 days
57 days
22 days
unclear
Discount from original list
12.8%
10.2%
6.1%
4.0%
unclear
Price cut before sale
75%
62%
56%
25%
unclear
Seller paid closing costs or repairs
50%
100%
44%
100%
unclear
Has a view
0%
0%
0%
12%
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 $162 per SF for homes over $276K and $155 per SF for homes under $226K. It does not move in a straight line; homes $226K–$248K are highest. Defined in 8.1.2.
– No clear difference · could be chance
3.4 Homes over $276K are about 560 SF (44%) larger than homes under $226K
The average is 1,832 SF for homes over $276K and 1,274 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 2006 for homes over $276K and 2001 for homes under $226K. It rises step by step from the lowest range to the highest. Defined in 8.1.4.
– No clear difference · could be chance
3.6 Days on market: no clear difference
The median is 22 days for homes over $276K and 58 days for homes under $226K. It does not move in a straight line; homes $226K–$248K 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 4.0% for homes over $276K 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.
25% of homes over $276K had a price cut before sale, against 75% of homes under $226K. Defined in 8.1.7.
100% of homes over $276K had the seller pay closing costs or repairs, against 50% of homes under $226K. Defined in 8.1.8.
12% of homes over $276K 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 $226K8 sales
$226K–$248K8 sales
$260K–$276K9 sales
Over $276K8 sales
All33 sales
Real difference?
Net sale price average
$192,212
$239,488
$267,328
$295,167
$249,118
by design
Net price per SF average
$155
$176
$162
$162
$164
unclear
Living area average
1,274
1,374
1,685
1,832
1,546
✓ large
Year built median
2001
2005
2006
2006
2005
unclear
3.10 The numbers: selling
Under $226K8 sales
$226K–$248K8 sales
$260K–$276K9 sales
Over $276K8 sales
All33 sales
Real difference?
Days on market median
58
140
57
22
57
unclear
Discount from original list average
12.8%
10.2%
6.1%
4.0%
8.2%
unclear
Price cut before sale
75%
62%
56%
25%
55%
unclear
Seller paid closing costs or repairs
50%
100%
44%
100%
73%
unclear
Has a view
0%
0%
0%
12%
3%
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 · 33 sales · October 26, 2025 – October 25, 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 $69K (32%) more than homes under 1,288 SF.
Homes over 1,795 SF sell for about $34 per SF (19%) less than homes under 1,288 SF.
4.1 Key differences
The top group against the bottom group. Only real differences are listed. Section 8 explains each measure.
Under 1,288 SF1,288–1,508 SF1,513–1,795 SFOver 1,795 SF
Larger homes Over 1,795 SF
Sell for much more.
Sell for less per square foot.
Smaller homes Under 1,288 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 1,288 SF
1,288–1,508 SF
1,513–1,795 SF
Over 1,795 SF
Real difference?
Net sale price
$213KLowest
$238K
$261K
$282KHighest
✓ large
Net price per SF
$179 per SFHighest
$172 per SF
$159 per SF
$145 per SFLowest
✓ large
Year built
2004
2009
2000
2006
unclear
Days on market
58 days
42 days
88 days
56 days
unclear
Discount from original list
10.8%
8.0%
7.3%
6.9%
unclear
Price cut before sale
75%
38%
56%
50%
unclear
Seller paid closing costs or repairs
75%
62%
78%
75%
unclear
Has a view
0%
0%
0%
12%
unclear
4.3 Homes over 1,795 SF sell for about $69K (32%) more than homes under 1,288 SF
The average is $282K for homes over 1,795 SF and $213K for homes under 1,288 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 1,288 SF
The average is $145 per SF for homes over 1,795 SF and $179 per SF for homes under 1,288 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 2004 for homes under 1,288 SF. It does not move in a straight line; homes 1,288–1,508 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 58 days for homes under 1,288 SF. It does not move in a straight line; homes 1,513–1,795 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 6.9% for homes over 1,795 SF and 10.8% for homes under 1,288 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.
50% of homes over 1,795 SF had a price cut before sale, against 75% of homes under 1,288 SF. Defined in 8.1.7.
75% of homes over 1,795 SF had the seller pay closing costs or repairs, against 75% of homes under 1,288 SF. Defined in 8.1.8.
12% of homes over 1,795 SF have a view, against 0% of homes under 1,288 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 1,288 SF8 sales
1,288–1,508 SF8 sales
1,513–1,795 SF9 sales
Over 1,795 SF8 sales
All33 sales
Real difference?
Net sale price average
$213,196
$238,421
$261,378
$281,944
$249,118
✓ large
Net price per SF average
$179
$172
$159
$145
$164
✓ large
Living area average
1,188
1,388
1,649
1,945
1,546
by design
Year built median
2004
2009
2000
2006
2005
unclear
4.10 The numbers: selling
Under 1,288 SF8 sales
1,288–1,508 SF8 sales
1,513–1,795 SF9 sales
Over 1,795 SF8 sales
All33 sales
Real difference?
Days on market median
58
42
88
56
57
unclear
Discount from original list average
10.8%
8.0%
7.3%
6.9%
8.2%
unclear
Price cut before sale
75%
38%
56%
50%
55%
unclear
Seller paid closing costs or repairs
75%
62%
78%
75%
73%
unclear
Has a view
0%
0%
0%
12%
3%
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 · 33 sales · October 26, 2025 – October 25, 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 2000
2000–2003
2005–2010
After 2010
Real difference?
Net sale price
$230K
$239K
$249K
$276K
unclear
Net price per SF
$147 per SF
$164 per SF
$166 per SF
$177 per SF
unclear
Living area
1,586 SF
1,497 SF
1,523 SF
1,576 SF
unclear
Days on market
138 days
54 days
64 days
21 days
unclear
Discount from original list
15.5%
7.5%
5.1%
5.5%
unclear
Price cut before sale
62%
71%
60%
25%
unclear
Seller paid closing costs or repairs
62%
86%
60%
88%
unclear
Has a view
0%
0%
10%
0%
unclear
5.3 Net sale price: no clear difference
The average is $276K for homes built after 2010 and $230K for homes built before 2000. 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 2010 and $147 per SF for homes built before 2000. 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 1,576 SF for homes built after 2010 and 1,586 SF for homes built before 2000. It does not move in a straight line; homes built before 2000 are highest. Defined in 8.1.3.
– No clear difference · could be chance
5.6 Days on market: no clear difference
The median is 21 days for homes built after 2010 and 138 days for homes built before 2000. It does not move in a straight line; homes built before 2000 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 5.5% for homes built after 2010 and 15.5% for homes built before 2000. It does not move in a straight line; homes built before 2000 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.
25% of homes built after 2010 had a price cut before sale, against 62% of homes built before 2000. Defined in 8.1.7.
88% of homes built after 2010 had the seller pay closing costs or repairs, against 62% of homes built before 2000. Defined in 8.1.8.
0% of homes built after 2010 have a view, against 0% of homes built before 2000. 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 20008 sales
2000–20037 sales
2005–201010 sales
After 20108 sales
All33 sales
Real difference?
Net sale price average
$230,152
$239,378
$249,255
$276,435
$249,118
unclear
Net price per SF average
$147
$164
$166
$177
$164
unclear
Living area average
1,586
1,497
1,523
1,576
1,546
unclear
Year built median
1993
2002
2006
2016
2005
by design
5.10 The numbers: selling
Before 20008 sales
2000–20037 sales
2005–201010 sales
After 20108 sales
All33 sales
Real difference?
Days on market median
138
54
64
21
57
unclear
Discount from original list average
15.5%
7.5%
5.1%
5.5%
8.2%
unclear
Price cut before sale
62%
71%
60%
25%
55%
unclear
Seller paid closing costs or repairs
62%
86%
60%
88%
73%
unclear
Has a view
0%
0%
10%
0%
3%
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 · 33 sales · October 26, 2025 – October 25, 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 $289K for homes with a view and $249K 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 $160 per SF for homes with a view and $162 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 1,807 SF for homes with a view and 1,561 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 2006 for homes with a view and 2005 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 9 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 0.2% for homes with a view and 8.0% 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 53% of homes without a view. Defined in 8.1.7.
100% of homes with a view had the seller pay closing costs or repairs, against 70% 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
View1 sales
No view30 sales
All31 sales
Net sale price average
$289,275
$249,475
$250,759
Net price per SF average
$160
$162
$162
Living area average
1,807
1,561
1,569
Year built median
2006
2005
2005
6.11 The numbers: selling
View1 sales
No view30 sales
All31 sales
Days on market median
9
56
54
Discount from original list average
0.2%
8.0%
7.8%
Price cut before sale
0%
53%
52%
Seller paid closing costs or repairs
100%
70%
71%
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 · October 26, 2025 – October 25, 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
33 resale sales. Average $249,118; median $260,000; standard deviation $39,504; middle half (25th–75th percentile) $226,500–$276,450; lowest $169,000, highest $319,774. 24 sales had a seller payment; their median payment was $7,950.
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
33 resale sales. Average $164; median $165; standard deviation $23; middle half (25th–75th percentile) $150–$182; lowest $102, highest $196.
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
33 resale sales. Average 1,546; median 1,513; standard deviation 298; middle half (25th–75th percentile) 1,288–1,795; lowest 1,091, 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
33 resale sales. Average 2005; median 2005; standard deviation 9; middle half (25th–75th percentile) 2000–2010; 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
33 resale sales. Average 82; median 57; standard deviation 80; middle half (25th–75th percentile) 20–122; lowest 9, 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
33 resale sales. Average 8.2%; median 7.2%; standard deviation 8.1%; middle half (25th–75th percentile) 3.0%–12.9%; lowest −8.4%, highest 37.0%. 1 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
18 of 33 resale sales (54.5%).
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
24 of 33 resale sales (72.7%).
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
1 sales with a view, 30 without, 2 unclassified. Most common View entries: None 21, Neighborhood 9, See Remarks 2, 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
Bridge Interactive RESO Web API (OData), ABOR dataset, every field returned. 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 October 26, 2026: 34 closed Austins Colony records over the prior year, in ZIP 78725. 15 subdivision spellings kept, the most common: Austins Colony Ph 03 (7); Austins Colony Ph 02 (6); Austins Colony (5); Austins Colony Ph 05 Sec 02 (2); Austins Colony Sec 7A (2); Austins Colony Ph 05 Sec 01 (2); Austins Colony Sec 6B (2); Austins Colony Sec 7B (1); Austins Colony Ph 04 (1); Austins Colony Sec S (1); Austins Colony Sec 6A (1); Austins Colony Sec 7b (1); and 3 more (3 records). No other names were found by the search.
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 15 resale sales here (under 80), so the full year is used.
Statistically
CloseDate from October 26, 2025 to October 25, 2026 inclusive.
The data
33 single-family sales in the window: 33 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
33 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 (8 sales); $226K–$248K: $226,500–$247,500 (8 sales); $260K–$276K: $260,000–$276,450 (9 sales); Over $276K: $283,000–$319,774 (8 sales) Quartiles by living area: Under 1,288 SF: 1,091–1,274 SF (8 sales); 1,288–1,508 SF: 1,288–1,508 SF (8 sales); 1,513–1,795 SF: 1,513–1,795 SF (9 sales); Over 1,795 SF: 1,807–2,125 SF (8 sales) Quartiles by year built: Before 2000: 1986–1999 (8 sales); 2000–2003: 2000–2003 (7 sales); 2005–2010: 2005–2010 (10 sales); After 2010: 2014–2020 (8 sales) View and no view: View: MLS lists a view (1 sales); No view: None or Neighborhood (30 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 $249,118, median $260,000. Days on market: average 82, median 57: 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 = 3.19
3
0.3639
p < 0.0063
Unclear
ε² = 0.100
medium
Living area
Kruskal–Wallis
H = 18.98
3
0.0003
p < 0.0063
Yes
ε² = 0.593
large
Year built
Kruskal–Wallis
H = 5.54
3
0.1363
p < 0.0063
Unclear
ε² = 0.173
large
Days on market
Kruskal–Wallis
H = 3.50
3
0.3203
p < 0.0063
Unclear
ε² = 0.109
medium
Discount from original list
Kruskal–Wallis
H = 8.35
3
0.0393
p < 0.0063
Unclear
ε² = 0.261
large
Price cut before sale
Chi-square
χ² = 4.37
3
0.2238
p < 0.0063
Unclear
Cramér’s V = 0.364
medium
Seller paid closing costs or repairs
Chi-square
χ² = 11.71
3
0.0084
p < 0.0063
Unclear
Cramér’s V = 0.596
large
Has a view
Chi-square
χ² = 3.22
3
0.3586
p < 0.0063
Unclear
Cramér’s V = 0.312
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 = 15.27
3
0.0016
p < 0.0063
Yes
ε² = 0.477
large
Net price per SF
Kruskal–Wallis
H = 13.65
3
0.0034
p < 0.0063
Yes
ε² = 0.427
large
Year built
Kruskal–Wallis
H = 1.52
3
0.6784
p < 0.0063
Unclear
ε² = 0.047
small
Days on market
Kruskal–Wallis
H = 1.77
3
0.6224
p < 0.0063
Unclear
ε² = 0.055
small
Discount from original list
Kruskal–Wallis
H = 3.54
3
0.3150
p < 0.0063
Unclear
ε² = 0.111
medium
Price cut before sale
Chi-square
χ² = 2.36
3
0.5015
p < 0.0063
Unclear
Cramér’s V = 0.267
small
Seller paid closing costs or repairs
Chi-square
χ² = 0.58
3
0.9012
p < 0.0063
Unclear
Cramér’s V = 0.132
small
Has a view
Chi-square
χ² = 3.22
3
0.3586
p < 0.0063
Unclear
Cramér’s V = 0.312
medium
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 = 4.61
3
0.2026
p < 0.0063
Unclear
ε² = 0.144
large
Net price per SF
Kruskal–Wallis
H = 6.13
3
0.1054
p < 0.0063
Unclear
ε² = 0.192
large
Living area
Kruskal–Wallis
H = 0.44
3
0.9322
p < 0.0063
Unclear
ε² = 0.014
small
Days on market
Kruskal–Wallis
H = 3.31
3
0.3459
p < 0.0063
Unclear
ε² = 0.104
medium
Discount from original list
Kruskal–Wallis
H = 8.15
3
0.0431
p < 0.0063
Unclear
ε² = 0.255
large
Price cut before sale
Chi-square
χ² = 3.95
3
0.2674
p < 0.0063
Unclear
Cramér’s V = 0.346
medium
Seller paid closing costs or repairs
Chi-square
χ² = 2.71
3
0.4379
p < 0.0063
Unclear
Cramér’s V = 0.287
small
Has a view
Chi-square
χ² = 2.37
3
0.4989
p < 0.0063
Unclear
Cramér’s V = 0.268
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.