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CondominiumResidential

88 17th Ave

SAN MATEO, CA 94402
0.69 ac
Lot SizeThe size of the land the home sits on, from county records.
1994
Year BuiltThe year the home was originally built, according to county records.
1
StoriesHow many floors the home has above ground.
Built 19943 floors30 units925–1,504 ft²
$29M
All units combinedThe sum of our current value estimates for every unit in the building — roughly what the whole building's homes are worth together.
$920K
Median unit valueThe middle unit value in this building by our estimate: half the units are worth more, half less.
$828
Median $/ft²The middle price per square foot across the building's units, by our current estimates. Useful for comparing units of different sizes.

-40.0%vs the San Mateo ZIP median sale $/ft² ($1379)

Sales Performance

$820K
Median sale (12 mo)The middle sale price among this building's units that sold in the last 12 months, from recorded deeds.
-29.0%
1-yr changeHow the building's median sale price over the last 12 months compares with the 12 months before that.
3
Sales (12 mo)Units in this building that sold in the last 12 months, from recorded arms-length deeds.
10.0%
Turnover (12 mo)The share of units that changed hands in the last 12 months. Around 4–6% a year is typical; much higher can signal investor churn or a wave of exits.
This building's own appreciationThe building's own appreciation: for every unit that sold twice (held over a year), we compute its yearly price change between the two sales and take the middle value. This is the cleanest read on how this specific building performs, because it compares each unit to itself.
+6.8%per yeartypical hold 5.5 yrsfrom 51 same-unit resales
Median sale price (yearly, all time)Every recorded arms-length sale in the building since records begin, grouped by year: the bars count sales and the line tracks the median price paid.MedianSales
19931999200420082012201620212026
Sale price per ft² (yearly, all time)The middle price per square foot across the building's units, by our current estimates. Useful for comparing units of different sizes.$/ft²
19931999200420082012201620212026

82 arms-length sales on record for this building.

Unit Mix & Floor PlansThe building's recurring floor plans, found by grouping units with identical beds, baths and square footage in county records. Larger groups are the building's standard layouts; leftover units have one-off sizes.

Every unit: size vs estimated valueEvery unit in the building as one dot: across is its size, up is our current value estimate, and color is its bedroom count. Vertical columns of dots are recurring floor plans; the height spread within a column shows how much floor, view and condition move prices for the same layout.
$749K$899K$1M$1.2M925 ft²1,041 ft²1,157 ft²1,272 ft²1,388 ft²1,504 ft²
2 bd3 bd
2 bed
18 units
3 bed
12 units
Recurring floor plansThe building's recurring floor plans, found by grouping units with identical beds, baths and square footage in county records. Larger groups are the building's standard layouts; leftover units have one-off sizes.
3 bd · 2.5 ba · 1,464 ft²
7 units
2 bd · 2 ba · 1,027 ft²
6 units
2 bd · 2 ba · 1,056 ft²
4 units
2 bd · 2 ba · 1,086 ft²
4 units
3 bd · 2.5 ba · 1,398 ft²
4 units
2 bd · 2 ba · 925 ft²
2 units
2 bd · 2 ba · 1,113 ft²
2 units
One-off layouts
1 unit

Value DistributionHow the building's units spread across value ranges by our current estimates. A wide spread usually means big differences in size, floor or view.

$749K–$791K
3 units
$820K–$861K
2 units
$862K–$909K
9 units
$920K–$923K
3 units
$1.1M–$1.1M
3 units
$1.1M–$1.2M
9 units

Value by Floor & LineAverage estimated price per square foot by floor range, using unit numbers to infer floors. Higher floors usually price higher — the gap shows how much the view is worth here.

Floor 1
$801/ft²
Floor 2
$821/ft²
Floor 3
$838/ft²
Unit lines by $/ft²Condo units stacked vertically share a unit line — the last digits of the unit number (like 05 in 1205, 1305, 1405). Lines share a layout and exposure, so comparing estimated $/ft² by line shows which position in the building commands a premium.
Line ·02
$852/ft²
Line ·03
$830/ft²
Line ·07
$828/ft²
Line ·05
$826/ft²
Line ·06
$818/ft²
Line ·04
$795/ft²

Ownership & Financing

Owner-occupiedThe share of units where the owner lives in the unit, per county records. The rest are second homes or rentals.67%
Company-ownedUnits owned through an LLC, trust, or other company — a rough proxy for investor ownership.27%
Typical owner tenureThe middle number of years since each unit last changed hands — how long the current owners have been in place.15.5 yrs
Cash purchases (5 yrs)The share of purchases in the last 5 years with no mortgage recorded. High cash share is common in second-home and investor buildings.14%
Avg. loan-to-valueAverage current loan balance against unit value across the building. Low numbers mean owners hold lots of equity — a sign of financial stability.45%
Median owner equityThe middle dollar amount of equity (value minus loans) unit owners hold in this building.$895,365
Median tax billThe middle annual property tax bill among the building's units.$9,432
Pre-foreclosure noticesUnits with an active pre-foreclosure or foreclosure notice on file.0

Recent SalesThe latest recorded arms-length sales in the building, newest first.

Unit 304Aug 6, 2026$820,000Unit 109Jul 13, 2026$1,100,000Unit 201May 19, 2026$750,000Unit 103Jun 30, 2025$1,155,000Unit 115Sep 13, 2023$1,140,000Unit 202Jun 24, 2022$1,010,000Unit 115Jan 14, 2022$1,152,000Unit 107Oct 5, 2021$1,326,000Unit 103May 28, 2021$1,280,000Unit 201Apr 21, 2020$978,000

Values are TopHap estimates, not appraisals. Sales, ownership and tax figures come from recorded county documents via ATTOM and can lag by several weeks.

Property Facts

Property TypeThe broad category the county puts this property in, such as residential or commercial.Condominium
StyleThe architectural style of the home, such as ranch or colonial.Condo/Apartment
CountySAN MATEO
Lot (acres)The size of the land the home sits on, from county records.0.69
HeatingThe type of heating system in the home.Central
GarageWhether the property has a garage, and details like whether it is attached to the home.Carport (Unspecified)
PoolWhether the property has a pool, and what kind, such as in-ground.No
ViewThe type of view from the property, or another feature of the site that affects value.End Unit

Assigned SchoolsThe public schools this address is zoned for. Boundaries change, so confirm with the district before you count on it.

M
Borel Middle SchoolB
Middle · Grades 6–8 · 0.5 mi
E
Sunnybrae Elementary SchoolD-
Elementary · Grades KG–5 · 0.6 mi
H
Aragon High SchoolA
High · Grades 9–12 · 0.9 mi

District: San Mateo-Foster City Elementary School District

Neighborhood · ZIP 94402These are comparison scores, not percentages. 100 equals the national average, so 150 means about 50% above average.

CrimeLocal crime compared with the rest of the country, where 100 is average. It reflects things like population density, income, and how crime gets reported.91
Air pollutionOverall air pollution compared with the rest of the country, where 100 is average. Lower is cleaner.88
EarthquakeEarthquake risk and likely building damage compared with the rest of the country, where 100 is average. Scores can run far above 100.595

Index scale: 100 = US average (tick). Lower is better.

Homes occupiedThe share of homes here that someone lives in. The rest sit empty, including vacation and for-sale homes.93%
Bachelor's or higherThe share of adults 25 and older whose highest degree is a bachelor's degree.31%
Poverty rateThe share of people whose household income falls below the federal poverty line, which varies by family size.7.4%
UnemploymentThe share of men 16 and older who are out of work and actively looking. Only men are counted in this figure.1.1%
PopulationHow many people live in this area.26,204
DensityPeople per square mile. Higher numbers mean a more crowded, urban area.4,919 / mi²
Median incomeThe middle household income here — half of households earn more, half earn less.$171,813
Average incomeThe average household income. It runs higher than the median when a few high earners pull it up.$232,257
Average tempThe average temperature here across a full year.58°F
Annual precipHow much rain and melted snow falls here in a typical year.24 in
SunshineThe share of daylight hours that get direct sun in a typical year, counting cloud cover.66%

All UnitsEvery property record the county has at this street address, such as the units in a condo building. Prices shown are our estimates, not asking prices.

88 17th Ave # 101
2 bd · 2 ba · 1,027 ft²
88 17th Ave # 102
3 bd · 2.5 ba · 1,398 ft²
$1.2M
88 17th Ave # 103
3 bd · 2.5 ba · 1,398 ft²
$1.1M
88 17th Ave # 104
3 bd · 2.5 ba · 1,464 ft²
$1.2M
88 17th Ave # 105
3 bd · 2.5 ba · 1,464 ft²
$1.2M
88 17th Ave # 106
3 bd · 2.5 ba · 1,464 ft²
$1.1M
88 17th Ave # 107
3 bd · 2.5 ba · 1,464 ft²
$1.2M
88 17th Ave # 108
3 bd · 2.5 ba · 1,504 ft²
$1.1M
88 17th Ave # 109
3 bd · 2.5 ba · 1,398 ft²
$1.1M
88 17th Ave # 110
3 bd · 2.5 ba · 1,398 ft²
$1.1M
88 17th Ave # 111
2 bd · 2 ba · 1,027 ft²
$879K
88 17th Ave # 112
3 bd · 2.5 ba · 1,464 ft²
$1.2M
88 17th Ave # 114
3 bd · 2.5 ba · 1,464 ft²
$1.2M
88 17th Ave # 115
3 bd · 2.5 ba · 1,464 ft²
$1.1M
88 17th Ave # 201
2 bd · 2 ba · 1,027 ft²
$749K
88 17th Ave # 202
2 bd · 2 ba · 1,056 ft²
$897K
88 17th Ave # 203
2 bd · 2 ba · 1,086 ft²
$905K
88 17th Ave # 204
2 bd · 2 ba · 1,113 ft²
$922K
88 17th Ave # 205
2 bd · 2 ba · 1,086 ft²
$899K
88 17th Ave # 206
2 bd · 2 ba · 1,056 ft²
$886K
88 17th Ave # 207
2 bd · 2 ba · 1,027 ft²
$861K
88 17th Ave # 301
2 bd · 2 ba · 1,027 ft²
$902K
88 17th Ave # 302
2 bd · 2 ba · 1,056 ft²
$920K
88 17th Ave # 303
2 bd · 2 ba · 1,086 ft²
$909K
88 17th Ave # 304
2 bd · 2 ba · 1,113 ft²
$820K
88 17th Ave # 305
2 bd · 2 ba · 1,086 ft²
$923K
88 17th Ave # 306
2 bd · 2 ba · 1,056 ft²
$879K
88 17th Ave # 307
2 bd · 2 ba · 1,027 ft²
$862K
88 17th Ave # 308
2 bd · 2 ba · 925 ft²
$778K
88 17th Ave # 309
2 bd · 2 ba · 925 ft²
$791K

Data by ATTOM. Valuations are automated estimates, not appraisals. Photos from Google Street View and may not depict the current property state.

About 88 17th Ave

How many units are in 88 17th Ave, San Mateo, CA?

88 17th Ave, San Mateo, CA has 30 residential units across 3 floors, built in 1994, according to county assessor records.

What is a unit at 88 17th Ave, San Mateo, CA worth?

The median TopHap Estimate across the 30 units at 88 17th Ave, San Mateo, CA is $920,003. That works out to $828 per square foot. Units run from 925 to 1,504 square feet. Estimates are modelled from recorded sales and assessments, not appraisals.

Is 88 17th Ave, San Mateo, CA expensive for San Mateo?

Units at 88 17th Ave, San Mateo, CA carry a median of $828 per square foot, 40% below the San Mateo median of $1379 per square foot.

How often do units sell at 88 17th Ave, San Mateo, CA?

3 units at 88 17th Ave, San Mateo, CA sold in the last 12 months, out of 82 recorded arms-length sales all time. That is a turnover rate of 10.0% of the building per year. The median sale over that period was $820K.

Have units at 88 17th Ave, San Mateo, CA appreciated?

Across 51 repeat sales of the same unit, 88 17th Ave, San Mateo, CA returned a median 6.8% per year. Because each pair is the same unit bought and sold, the figure is not distorted by which units traded. The median owner held for 5.5 years.

What floor plans does 88 17th Ave, San Mateo, CA have?

The most common plan at 88 17th Ave, San Mateo, CA is a 3-bedroom of 1,464 square feet, repeated 7 times, with a median estimate of $1,154,280. TopHap identifies 7 recurring plans in the building.

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Assigned schools

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