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
49
single-family resale homes
Median net sale price
$365,000
average $363,845
Median net price per SF
$175
average $175
Median days on market
54 days
average 78 days
1. SummaryResale homes · 49 sales · October 26, 2025 – October 25, 2026
This study looks at the 49 resale homes sold in Larkspur in the 365 days to October 25, 2026. A full year is used because only 25 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 sold49 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 · 49 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 $390K are about 1,110 SF (71%) larger than homes under $315K.
Homes over $390K sell for about $30 per SF (15%) less than homes under $315K.
3.1 Key differences
The top group against the bottom group. Only real differences are listed. Section 8 explains each measure.
Under $315K$315K–$364K$365K–$390KOver $390K
Higher-priced homes Over $390K
Are much larger.
Sell for less per square foot.
Lower-priced homes Under $315K
Are much smaller.
Sell for more 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 $315K
$315K–$364K
$365K–$390K
Over $390K
Real difference?
Net price per SF
$194 per SFHighest
$179 per SF
$167 per SF
$164 per SFLowest
✓ large
Living area
1,570 SFSmallest
1,957 SF
2,267 SF
2,677 SFLargest
✓ large
Year built
2019
2020
2020
2020
unclear
Days on market
66 days
35 days
82 days
50 days
unclear
Discount from original list
6.4%
6.3%
5.1%
5.1%
unclear
Price cut before sale
58%
64%
57%
50%
unclear
Seller paid closing costs or repairs
83%
82%
71%
75%
unclear
Has a view
33%
27%
21%
50%
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 $390K sell for about $30 per SF (15%) less than homes under $315K
The average is $164 per SF for homes over $390K and $194 per SF for homes under $315K. It falls step by step from the lowest range to the highest. Defined in 8.1.2.
✓ Real difference · large
3.4 Homes over $390K are about 1,110 SF (71%) larger than homes under $315K
The average is 2,677 SF for homes over $390K and 1,570 SF for homes under $315K. 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 2020 for homes over $390K and 2019 for homes under $315K. It does not move in a straight line; homes $315K–$364K are highest. Defined in 8.1.4.
– No clear difference · could be chance
3.6 Days on market: no clear difference
The median is 50 days for homes over $390K and 66 days for homes under $315K. It does not move in a straight line; homes $365K–$390K 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 5.1% for homes over $390K and 6.4% for homes under $315K. 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.
50% of homes over $390K had a price cut before sale, against 58% of homes under $315K. Defined in 8.1.7.
75% of homes over $390K had the seller pay closing costs or repairs, against 83% of homes under $315K. Defined in 8.1.8.
50% of homes over $390K have a view, against 33% of homes under $315K. 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 $315K12 sales
$315K–$364K11 sales
$365K–$390K14 sales
Over $390K12 sales
All49 sales
Real difference?
Net sale price average
$301,473
$339,108
$375,672
$435,093
$363,845
by design
Net price per SF average
$194
$179
$167
$164
$175
✓ large
Living area average
1,570
1,957
2,267
2,677
2,127
✓ large
Year built median
2019
2020
2020
2020
2020
unclear
3.10 The numbers: selling
Under $315K12 sales
$315K–$364K11 sales
$365K–$390K14 sales
Over $390K12 sales
All49 sales
Real difference?
Days on market median
66
35
82
50
54
unclear
Discount from original list average
6.4%
6.3%
5.1%
5.1%
5.7%
unclear
Price cut before sale
58%
64%
57%
50%
57%
unclear
Seller paid closing costs or repairs
83%
82%
71%
75%
78%
unclear
Has a view
33%
27%
21%
50%
33%
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 · 49 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 2,467 SF sell for about $122K (40%) more than homes under 1,703 SF.
Homes over 2,467 SF sell for about $48 per SF (24%) less than homes under 1,703 SF.
4.1 Key differences
The top group against the bottom group. Only real differences are listed. Section 8 explains each measure.
Under 1,703 SF1,703–2,104 SF2,146–2,467 SFOver 2,467 SF
Larger homes Over 2,467 SF
Sell for much more.
Sell for less per square foot.
Smaller homes Under 1,703 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 1,703 SF
1,703–2,104 SF
2,146–2,467 SF
Over 2,467 SF
Real difference?
Net sale price
$302KLowest
$343K
$379K
$424KHighest
✓ large
Net price per SF
$201 per SFHighest
$185 per SF
$166 per SF
$153 per SFLowest
✓ large
Year built
2019
2019
2020
2020
unclear
Days on market
49 days
30 days
82 days
85 days
unclear
Discount from original list
4.9%
4.5%
4.0%
9.5%
unclear
Price cut before sale
55%
50%
50%
75%
unclear
Seller paid closing costs or repairs
64%
100%
79%
67%
unclear
Has a view
27%
33%
21%
50%
unclear
4.3 Homes over 2,467 SF sell for about $122K (40%) more than homes under 1,703 SF
The average is $424K for homes over 2,467 SF and $302K for homes under 1,703 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 2,467 SF sell for about $48 per SF (24%) less than homes under 1,703 SF
The average is $153 per SF for homes over 2,467 SF and $201 per SF for homes under 1,703 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 2020 for homes over 2,467 SF and 2019 for homes under 1,703 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 85 days for homes over 2,467 SF and 49 days for homes under 1,703 SF. It does not move in a straight line; homes over 2,467 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 9.5% for homes over 2,467 SF and 4.9% for homes under 1,703 SF. It does not move in a straight line; homes over 2,467 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.
75% of homes over 2,467 SF had a price cut before sale, against 55% of homes under 1,703 SF. Defined in 8.1.7.
67% of homes over 2,467 SF had the seller pay closing costs or repairs, against 64% of homes under 1,703 SF. Defined in 8.1.8.
50% of homes over 2,467 SF have a view, against 27% of homes under 1,703 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 1,703 SF11 sales
1,703–2,104 SF12 sales
2,146–2,467 SF14 sales
Over 2,467 SF12 sales
All49 sales
Real difference?
Net sale price average
$301,930
$342,921
$378,812
$424,062
$363,845
✓ large
Net price per SF average
$201
$185
$166
$153
$175
✓ large
Living area average
1,505
1,860
2,291
2,773
2,127
by design
Year built median
2019
2019
2020
2020
2020
unclear
4.10 The numbers: selling
Under 1,703 SF11 sales
1,703–2,104 SF12 sales
2,146–2,467 SF14 sales
Over 2,467 SF12 sales
All49 sales
Real difference?
Days on market median
49
30
82
85
54
unclear
Discount from original list average
4.9%
4.5%
4.0%
9.5%
5.7%
unclear
Price cut before sale
55%
50%
50%
75%
57%
unclear
Seller paid closing costs or repairs
64%
100%
79%
67%
78%
unclear
Has a view
27%
33%
21%
50%
33%
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 · 49 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 2019
2019
2020
After 2020
Real difference?
Net sale price
$368K
$335K
$359K
$420K
unclear
Net price per SF
$174 per SF
$183 per SF
$178 per SF
$157 per SF
unclear
Living area
2,127 SF
1,856 SF
2,091 SF
2,690 SF
unclear
Days on market
80 days
42 days
45 days
81 days
unclear
Discount from original list
4.5%
6.3%
5.6%
6.7%
unclear
Price cut before sale
55%
42%
63%
71%
unclear
Seller paid closing costs or repairs
100%
75%
68%
71%
unclear
Has a view
45%
25%
32%
29%
unclear
5.3 Net sale price: no clear difference
The average is $420K for homes built after 2020 and $368K for homes built before 2019. It does not move in a straight line; homes built after 2020 are highest. Defined in 8.1.1.
– No clear difference · could be chance
5.4 Net price per SF: no clear difference
The average is $157 per SF for homes built after 2020 and $174 per SF for homes built before 2019. It does not move in a straight line; homes built 2019 are highest. Defined in 8.1.2.
– No clear difference · could be chance
5.5 Living area: no clear difference
The average is 2,690 SF for homes built after 2020 and 2,127 SF for homes built before 2019. It does not move in a straight line; homes built after 2020 are highest. Defined in 8.1.3.
– No clear difference · could be chance
5.6 Days on market: no clear difference
The median is 81 days for homes built after 2020 and 80 days for homes built before 2019. It does not move in a straight line; homes built after 2020 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 6.7% for homes built after 2020 and 4.5% for homes built before 2019. It does not move in a straight line; homes built after 2020 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 2020 had a price cut before sale, against 55% of homes built before 2019. Defined in 8.1.7.
71% of homes built after 2020 had the seller pay closing costs or repairs, against 100% of homes built before 2019. Defined in 8.1.8.
29% of homes built after 2020 have a view, against 45% of homes built before 2019. 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 201911 sales
201912 sales
202019 sales
After 20207 sales
All49 sales
Real difference?
Net sale price average
$368,027
$335,420
$358,559
$420,346
$363,845
unclear
Net price per SF average
$174
$183
$178
$157
$175
unclear
Living area average
2,127
1,856
2,091
2,690
2,127
unclear
Year built median
2018
2019
2020
2022
2020
by design
5.10 The numbers: selling
Before 201911 sales
201912 sales
202019 sales
After 20207 sales
All49 sales
Real difference?
Days on market median
80
42
45
81
54
unclear
Discount from original list average
4.5%
6.3%
5.6%
6.7%
5.7%
unclear
Price cut before sale
55%
42%
63%
71%
57%
unclear
Seller paid closing costs or repairs
100%
75%
68%
71%
78%
unclear
Has a view
45%
25%
32%
29%
33%
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 · 49 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.
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
$374K
$359K
unclear
Net price per SF
$174 per SF
$176 per SF
unclear
Living area
2,194 SF
2,095 SF
unclear
Year built
2020
2020
unclear
Days on market
30 days
69 days
unclear
Discount from original list
4.3%
6.3%
unclear
Price cut before sale
38%
67%
unclear
Seller paid closing costs or repairs
81%
76%
unclear
6.3 Net sale price: no clear difference
The average is $374K for homes with a view and $359K 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 $174 per SF for homes with a view and $176 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 2,194 SF for homes with a view and 2,095 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 2020 for homes with a view and 2020 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 30 days for homes with a view and 69 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 4.3% for homes with a view and 6.3% 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.
38% of homes with a view had a price cut before sale, against 67% of homes without a view. Defined in 8.1.7.
81% of homes with a view had the seller pay closing costs or repairs, against 76% 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
View16 sales
No view33 sales
All49 sales
Real difference?
Net sale price average
$373,892
$358,973
$363,845
unclear
Net price per SF average
$174
$176
$175
unclear
Living area average
2,194
2,095
2,127
unclear
Year built median
2020
2020
2020
unclear
6.11 The numbers: selling
View16 sales
No view33 sales
All49 sales
Real difference?
Days on market median
30
69
54
unclear
Discount from original list average
4.3%
6.3%
5.7%
unclear
Price cut before sale
38%
67%
57%
unclear
Seller paid closing costs or repairs
81%
76%
78%
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 · 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 Larkspur.
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
49 resale sales. Average $363,845; median $365,000; standard deviation $52,285; middle half (25th–75th percentile) $315,000–$390,000; lowest $281,500, highest $475,000. 38 sales had a seller payment; their median payment was $5,250.
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
49 resale sales. Average $175; median $175; standard deviation $23; middle half (25th–75th percentile) $158–$190; lowest $126, highest $225.
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
49 resale sales. Average 2,127; median 2,146; standard deviation 487; middle half (25th–75th percentile) 1,703–2,467; lowest 1,393, highest 3,050.
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
49 resale sales. Average 2019; median 2020; standard deviation 1; middle half (25th–75th percentile) 2019–2020; lowest 2017, highest 2022.
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
49 resale sales. Average 78; median 54; standard deviation 81; middle half (25th–75th percentile) 19–106; lowest 0, highest 431. 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
49 resale sales. Average 5.7%; median 4.1%; standard deviation 5.2%; middle half (25th–75th percentile) 2.0%–8.0%; lowest −1.3%, highest 22.6%. 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
28 of 49 resale sales (57.1%).
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
38 of 49 resale sales (77.6%).
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
16 sales with a view, 33 without, 0 unclassified. Most common View entries: Neighborhood 21, None 20, Park/Greenbelt 13, Trees/Woods 6, Hill Country 1, Creek/Stream 1, Pond 1, See Remarks 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 = Leander, SubdivisionName contains any of “larkspur” (case-insensitive). A record is kept when its subdivision name belongs to the Larkspur family, the same rule comparable sales use.
The data
Pulled October 26, 2026: 49 closed Larkspur records over the prior year, in ZIP 78641. 2 subdivision spellings kept: Larkspur (45); LARKSPUR (4). Names found by the search but not part of Larkspur, left out: Larkspur Caughfield (1); Larkspur, Caughfield (1); Larkspur Subdivison (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 25 resale sales here (under 80), so the full year is used.
Statistically
CloseDate from October 26, 2025 to October 25, 2026 inclusive.
The data
49 single-family sales in the window: 49 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
49 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
None in this window.
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 $315K”.
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 $315K: $281,500–$314,000 (12 sales); $315K–$364K: $315,000–$363,750 (11 sales); $365K–$390K: $365,000–$390,000 (14 sales); Over $390K: $390,712–$475,000 (12 sales) Quartiles by living area: Under 1,703 SF: 1,393–1,698 SF (11 sales); 1,703–2,104 SF: 1,703–2,104 SF (12 sales); 2,146–2,467 SF: 2,146–2,467 SF (14 sales); Over 2,467 SF: 2,484–3,050 SF (12 sales) Quartiles by year built: Before 2019: 2017–2018 (11 sales); 2019: 2019–2019 (12 sales); 2020: 2020–2020 (19 sales); After 2020: 2021–2022 (7 sales) View and no view: View: MLS lists a view (16 sales); No view: None or Neighborhood (33 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 $363,845, median $365,000. Days on market: average 78, median 54: 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
4 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 = 13.87
3
0.0031
p < 0.0063
Yes
ε² = 0.289
large
Living area
Kruskal–Wallis
H = 32.51
3
< 0.0001
p < 0.0063
Yes
ε² = 0.677
large
Year built
Kruskal–Wallis
H = 3.17
3
0.3656
p < 0.0063
Unclear
ε² = 0.066
medium
Days on market
Kruskal–Wallis
H = 0.44
3
0.9328
p < 0.0063
Unclear
ε² = 0.009
negligible
Discount from original list
Kruskal–Wallis
H = 2.09
3
0.5533
p < 0.0063
Unclear
ε² = 0.044
small
Price cut before sale
Chi-square
χ² = 0.45
3
0.9305
p < 0.0063
Unclear
Cramér’s V = 0.095
negligible
Seller paid closing costs or repairs
Chi-square
χ² = 0.69
3
0.8751
p < 0.0063
Unclear
Cramér’s V = 0.119
small
Has a view
Chi-square
χ² = 2.59
3
0.4590
p < 0.0063
Unclear
Cramér’s V = 0.230
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 = 35.57
3
< 0.0001
p < 0.0063
Yes
ε² = 0.741
large
Net price per SF
Kruskal–Wallis
H = 30.46
3
< 0.0001
p < 0.0063
Yes
ε² = 0.635
large
Year built
Kruskal–Wallis
H = 8.72
3
0.0333
p < 0.0063
Unclear
ε² = 0.182
large
Days on market
Kruskal–Wallis
H = 4.56
3
0.2067
p < 0.0063
Unclear
ε² = 0.095
medium
Discount from original list
Kruskal–Wallis
H = 4.11
3
0.2498
p < 0.0063
Unclear
ε² = 0.086
medium
Price cut before sale
Chi-square
χ² = 2.13
3
0.5450
p < 0.0063
Unclear
Cramér’s V = 0.209
small
Seller paid closing costs or repairs
Chi-square
χ² = 5.52
3
0.1373
p < 0.0063
Unclear
Cramér’s V = 0.336
medium
Has a view
Chi-square
χ² = 2.59
3
0.4590
p < 0.0063
Unclear
Cramér’s V = 0.230
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 = 9.47
3
0.0236
p < 0.0063
Unclear
ε² = 0.197
large
Net price per SF
Kruskal–Wallis
H = 6.14
3
0.1052
p < 0.0063
Unclear
ε² = 0.128
medium
Living area
Kruskal–Wallis
H = 12.07
3
0.0071
p < 0.0063
Unclear
ε² = 0.251
large
Days on market
Kruskal–Wallis
H = 2.69
3
0.4428
p < 0.0063
Unclear
ε² = 0.056
small
Discount from original list
Kruskal–Wallis
H = 0.49
3
0.9207
p < 0.0063
Unclear
ε² = 0.010
small
Price cut before sale
Chi-square
χ² = 2.07
3
0.5584
p < 0.0063
Unclear
Cramér’s V = 0.205
small
Seller paid closing costs or repairs
Chi-square
χ² = 4.29
3
0.2319
p < 0.0063
Unclear
Cramér’s V = 0.296
small
Has a view
Chi-square
χ² = 1.20
3
0.7524
p < 0.0063
Unclear
Cramér’s V = 0.157
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 = 293.00
—
0.5434
p < 0.0063
Unclear
rank-biserial r = 0.110
small
Net price per SF
Mann–Whitney U
U = 247.00
—
0.7250
p < 0.0063
Unclear
rank-biserial r = 0.064
negligible
Living area
Mann–Whitney U
U = 296.00
—
0.5018
p < 0.0063
Unclear
rank-biserial r = 0.121
small
Year built
Mann–Whitney U
U = 232.00
—
0.4845
p < 0.0063
Unclear
rank-biserial r = 0.121
small
Days on market
Mann–Whitney U
U = 216.00
—
0.3111
p < 0.0063
Unclear
rank-biserial r = 0.182
small
Discount from original list
Mann–Whitney U
U = 170.00
—
0.0462
p < 0.0063
Unclear
rank-biserial r = 0.356
medium
Price cut before sale
Chi-square
χ² = 3.74
1
0.0530
p < 0.0063
Unclear
Cramér’s V = 0.276
small
Seller paid closing costs or repairs
Chi-square
χ² = 0.19
1
0.6657
p < 0.0063
Unclear
Cramér’s V = 0.062
negligible
8.4 Data notes
Left out of the analysis: 0 new-construction sales (basic statistics only, section 7); nothing else. 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.