CondominiumResidential
800 N Delaware St
SAN MATEO, CA 94401
25.6 ac
Lot SizeThe size of the land the home sits on, from county records.
1965
Year BuiltThe year the home was originally built, according to county records.
1
StoriesHow many floors the home has above ground.
Built 19654 floors46 units693–1,244 ft²
$25M
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.
$539K
Median unit valueThe middle unit value in this building by our estimate: half the units are worth more, half less.
$711
Median $/ft²The middle price per square foot across the building's units, by our current estimates. Useful for comparing units of different sizes.
-24.6%vs the San Mateo ZIP median sale $/ft² ($944)
Sales Performance
$500K
Median sale (12 mo)The middle sale price among this building's units that sold in the last 12 months, from recorded deeds.
+16.2%
1-yr changeHow the building's median sale price over the last 12 months compares with the 12 months before that.
2
Sales (12 mo)Units in this building that sold in the last 12 months, from recorded arms-length deeds.
4.3%
Turnover (12 mo)The share of units that changed hands in the last 12 months. Around 4–6% a year is typical; much higher can signal investor churn or a wave of exits.
This building's own appreciationThe building's own appreciation: for every unit that sold twice (held over a year), we compute its yearly price change between the two sales and take the middle value. This is the cleanest read on how this specific building performs, because it compares each unit to itself.
+5.0%per yeartypical hold 6.9 yrsfrom 64 same-unit resales
Median sale price (yearly, all time)Every recorded arms-length sale in the building since records begin, grouped by year: the bars count sales and the line tracks the median price paid.MedianSales
19881993199820032008201320212026
Sale price per ft² (yearly, all time)The middle price per square foot across the building's units, by our current estimates. Useful for comparing units of different sizes.$/ft²
19881993199820032008201320212026
111 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.
1 bd2 bd
1 bed
37 units$533K · $714/ft²
2 bed
9 units$741K · $697/ft²
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.
1 bd · 1 ba · 693 ft²
24 units$503K · $726/ft²
1 bd · 1 ba · 758 ft²
6 units$540K · $713/ft²
1 bd · 1 ba · 772 ft²
5 units$555K · $719/ft²
2 bd · 1 ba · 974 ft²
3 units$698K · $717/ft²
2 bd · 1 ba · 825 ft²
2 units$585K · $709/ft²
2 bd · 2 ba · 1,204 ft²
2 units$789K · $655/ft²
One-off layouts
4 units
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.
$414K–$468K
3 units
$471K–$520K
13 units
$530K–$572K
16 units
$581K–$633K
5 units
$644K–$644K
1 unit
$698K–$712K
2 units
$770K–$771K
2 units
$808K–$853K
2 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
$736/ft²7 units · +3%
Floor 2
$727/ft²15 units · +2%
Floor 3
$725/ft²13 units · +2%
Floor 4
$735/ft²9 units · +3%
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 ·05
$787/ft²4 units · +11%
Line ·06
$786/ft²4 units · +10%
Line ·03
$735/ft²4 units · +3%
Line ·07
$735/ft²4 units · +3%
Line ·01
$732/ft²3 units · +3%
Line ·02
$719/ft²4 units · +1%
Line ·04
$712/ft²4 units · +0%
Line ·08
$685/ft²3 units · -4%
Line ·09
$684/ft²3 units · -4%
Ownership & Financing
Owner-occupiedThe share of units where the owner lives in the unit, per county records. The rest are second homes or rentals.37%
Company-ownedUnits owned through an LLC, trust, or other company — a rough proxy for investor ownership.46%
Typical owner tenureThe middle number of years since each unit last changed hands — how long the current owners have been in place.13.6 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.67%
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.34%
Median owner equityThe middle dollar amount of equity (value minus loans) unit owners hold in this building.$546,596
Median tax billThe middle annual property tax bill among the building's units.$6,330
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 310Jul 10, 2026$522,000$753/ft²Unit 303Jul 2, 2026$477,500$689/ft²Unit 211Aug 8, 2025$430,000$620/ft²Unit 104Aug 7, 2024$615,000$797/ft²Unit 311Sep 29, 2023$599,000$864/ft²Unit 408Sep 27, 2023$890,000$715/ft²Unit 407Jun 16, 2023$590,000$851/ft²Unit 215Sep 28, 2022$580,000$837/ft²Unit 207Dec 21, 2021$615,000$887/ft²Unit 205Dec 9, 2020$638,000$826/ft²
Values are TopHap estimates, not appraisals. Sales, ownership and tax figures come from recorded county documents via ATTOM and can lag by several weeks.
Climate Risk
Projected Flood DepthHow deep a serious flood is expected to get here at some point in the next 30 years. Shown in inches.13 in
30-Year Flood ChanceThe chance of at least one serious flood here in the next 30 years, not in any single year.30%
FEMA Flood ZoneFEMA's flood zone for this address. Zones starting with A or V are high risk, and lenders usually require flood insurance there.minimal
Scores 0–100; higher = greater projected risk.
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
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.Yes
FeaturesExtra features found in county records. Records are not complete everywhere, so a missing feature does not always mean the home lacks it.Tennis court
Assigned SchoolsThe public schools this address is zoned for. Boundaries change, so confirm with the district before you count on it.
HME
San Mateo High SchoolA-
High · Grades 9–12 · 0.2 mi
Abbott Middle SchoolC
Middle · Grades 6–8 · 3.5 mi
Laurel Elementary SchoolD
Elementary · Grades KG–5 · 3.6 mi
District: San Mateo-Foster City Elementary School District
Neighborhood · ZIP 94401These 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.105
Air pollutionOverall air pollution compared with the rest of the country, where 100 is average. Lower is cleaner.84
EarthquakeEarthquake risk and likely building damage compared with the rest of the country, where 100 is average. Scores can run far above 100.537
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.94%
Bachelor's or higherThe share of adults 25 and older whose highest degree is a bachelor's degree.25%
Poverty rateThe share of people whose household income falls below the federal poverty line, which varies by family size.11%
UnemploymentThe share of men 16 and older who are out of work and actively looking. Only men are counted in this figure.1.3%
PopulationHow many people live in this area.32,992
DensityPeople per square mile. Higher numbers mean a more crowded, urban area.8,021 / mi²
Median incomeThe middle household income here — half of households earn more, half earn less.$113,608
Average incomeThe average household income. It runs higher than the median when a few high earners pull it up.$152,157
Average tempThe average temperature here across a full year.58°F
Annual precipHow much rain and melted snow falls here in a typical year.20 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.
800 N Delaware St # 101
1 bd · 1 ba · 693 ft²
800 N Delaware St # 102
1 bd · 1 ba · 693 ft²
800 N Delaware St # 103
1 bd · 1 ba · 693 ft²
800 N Delaware St # 104
1 bd · 1 ba · 772 ft²
800 N Delaware St # 105
2 bd · 1 ba · 854 ft²
800 N Delaware St # 106
1 bd · 1 ba · 693 ft²
800 N Delaware St # 107
1 bd · 1 ba · 693 ft²
800 N Delaware St # 201
1 bd · 1 ba · 758 ft²
800 N Delaware St # 202
1 bd · 1 ba · 758 ft²
800 N Delaware St # 203
1 bd · 1 ba · 693 ft²
800 N Delaware St # 204
2 bd · 1 ba · 974 ft²
800 N Delaware St # 205
1 bd · 1 ba · 772 ft²
800 N Delaware St # 206
1 bd · 1 ba · 693 ft²
800 N Delaware St # 207
1 bd · 1 ba · 693 ft²
800 N Delaware St # 208
1 bd · 1 ba · 693 ft²
800 N Delaware St # 209
1 bd · 1 ba · 693 ft²
800 N Delaware St # 210
1 bd · 1 ba · 693 ft²
800 N Delaware St # 211
1 bd · 1 ba · 693 ft²
800 N Delaware St # 212
1 bd · 1 ba · 816 ft²
800 N Delaware St # 214
2 bd · 1 ba · 825 ft²
800 N Delaware St # 215
1 bd · 1 ba · 693 ft²
800 N Delaware St # 216
1 bd · 1 ba · 693 ft²
800 N Delaware St # 301
1 bd · 1 ba · 758 ft²
800 N Delaware St # 302
1 bd · 1 ba · 758 ft²
800 N Delaware St # 303
1 bd · 1 ba · 693 ft²
800 N Delaware St # 304
2 bd · 1 ba · 974 ft²
800 N Delaware St # 305
1 bd · 1 ba · 772 ft²
800 N Delaware St # 306
1 bd · 1 ba · 693 ft²
800 N Delaware St # 307
1 bd · 1 ba · 693 ft²
800 N Delaware St # 308
2 bd · 2 ba · 1,204 ft²
800 N Delaware St # 309
2 bd · 2 ba · 1,204 ft²
800 N Delaware St # 310
1 bd · 1 ba · 693 ft²
800 N Delaware St # 311
1 bd · 1 ba · 693 ft²
800 N Delaware St # 312
1 bd · 1 ba · 772 ft²
800 N Delaware St # 314
2 bd · 1 ba · 825 ft²
800 N Delaware St # 315
1 bd · 1 ba · 693 ft²
800 N Delaware St # 316
1 bd · 1 ba · 693 ft²
800 N Delaware St # 401
1 bd · 1 ba · 758 ft²
800 N Delaware St # 402
1 bd · 1 ba · 758 ft²
800 N Delaware St # 403
1 bd · 1 ba · 693 ft²
800 N Delaware St # 404
2 bd · 1 ba · 974 ft²
800 N Delaware St # 405
1 bd · 1 ba · 772 ft²
800 N Delaware St # 406
1 bd · 1 ba · 693 ft²
800 N Delaware St # 407
1 bd · 1 ba · 693 ft²
800 N Delaware St # 408
2 bd · 2 ba · 1,244 ft²
800 N Delaware St # 409
1 bd · 1 ba · 733 ft²
Data by ATTOM. Valuations are automated estimates, not appraisals. Photos from Google Street View and may not depict the current property state.
About 800 N Delaware St
How many units are in 800 N Delaware St, San Mateo, CA?
800 N Delaware St, San Mateo, CA has 46 residential units across 4 floors, built in 1965, according to county assessor records.
What is a unit at 800 N Delaware St, San Mateo, CA worth?
The median TopHap Estimate across the 46 units at 800 N Delaware St, San Mateo, CA is $539,267. That works out to $711 per square foot. Units run from 693 to 1,244 square feet. Estimates are modelled from recorded sales and assessments, not appraisals.
Is 800 N Delaware St, San Mateo, CA expensive for San Mateo?
Units at 800 N Delaware St, San Mateo, CA carry a median of $711 per square foot, 25% below the San Mateo median of $944 per square foot.
How often do units sell at 800 N Delaware St, San Mateo, CA?
2 units at 800 N Delaware St, San Mateo, CA sold in the last 12 months, out of 111 recorded arms-length sales all time. That is a turnover rate of 4.3% of the building per year. The median sale over that period was $500K.
Have units at 800 N Delaware St, San Mateo, CA appreciated?
Across 64 repeat sales of the same unit, 800 N Delaware St, San Mateo, CA returned a median 5.0% 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 6.9 years.
What floor plans does 800 N Delaware St, San Mateo, CA have?
The most common plan at 800 N Delaware St, San Mateo, CA is a 1-bedroom of 693 square feet, repeated 24 times, with a median estimate of $503,336. TopHap identifies 6 recurring plans in the building.
More homes on N Delaware St
- 814 N Delaware St # 102$480K1 ba · 504 ft² · Sold $480K · Sep 2026
- 820 N Delaware St # 402$504K1 bd · 1 ba · 693 ft² · Sold $402K · Jul 2026
- 820 N Delaware St # 215$497K1 bd · 1 ba · 772 ft² · Sold $500K · Jul 2026
- 800 N Delaware St # 310$519K1 bd · 1 ba · 693 ft² · Sold $522K · Jul 2026
- 800 N Delaware St # 303$475K1 bd · 1 ba · 693 ft² · Sold $478K · Jul 2026
- 117 N Delaware St6 bd · 4 ba · 4,165 ft² · Sold $1.8M · Jun 2026
- 802 N Delaware St # 409$516K1 bd · 1 ba · 693 ft² · Sold $520K · Jun 2026
- 816 N Delaware St # 409$731K2 bd · 2 ba · 1,204 ft² · Sold $739K · May 2026
- 802 N Delaware St # 202$514K1 bd · 1 ba · 758 ft² · Sold $520K · May 2026
- 133 N Delaware St4 bd · 2 ba · 2,042 ft² · Sold $1.1M · Apr 2026
- 127 N Delaware St4 bd · 2 ba · 2,042 ft² · Sold $1.1M · Apr 2026
- 809 N Delaware St6 bd · 4 ba · 3,316 ft² · Sold $3.5M · Feb 2026
Closest homes
- 800 N Delaware St$491K0 ft · 1 bd · 1 ba · 693 ft² · Sold $225K · Jan 2012
- 800 N Delaware St$546K0 ft · 1 bd · 1 ba · 693 ft² · Sold $580K · Sep 2022
- 800 N Delaware St$468K34 ft · 1 bd · 1 ba · 693 ft² · Sold $135K · Nov 2010
- 800 N Delaware St$519K34 ft · 1 bd · 1 ba · 693 ft² · Sold $522K · Jul 2026
- 800 N Delaware St$482K34 ft · 1 bd · 1 ba · 693 ft² · Sold Jan 1900
- 800 N Delaware St$483K30 ft · 1 bd · 1 ba · 693 ft² · Sold Jan 1900
- 800 N Delaware St$554K30 ft · 1 bd · 1 ba · 693 ft² · Sold $599K · Sep 2023
- 800 N Delaware St$414K30 ft · 1 bd · 1 ba · 693 ft² · Sold $430K · Aug 2025
More homes in San Mateo 94401
- 13 Creekside Ln$1.6M3 bd · 3.5 ba · 1,540 ft² · Sold $1.6M · Sep 2026
- 1625 Cottage Grove Ave$1.4M3 bd · 1 ba · 1,000 ft² · Sold $1.4M · Sep 2026
- 664 N El Camino Real2 bd · 2 ba · 1,420 ft² · Sold $1.9M · Sep 2026
- 174 Tilton Ave$1.2M3 bd · 2 ba · 1,370 ft² · Sold $1.2M · Sep 2026
- 1546 Maxine Ave$1.4M3 bd · 2 ba · 1,080 ft² · Sold $1.5M · Sep 2026
- 835 N Humboldt St$575K1 bd · 1 ba · 693 ft² · Sold $575K · Sep 2026
- 1503 Cobb St$1.2M3 bd · 1 ba · 1,000 ft² · Sold $1.3M · Sep 2026
- 160 Tilton Ave$1.2M3 bd · 2.5 ba · 1,374 ft² · Sold $1.2M · Sep 2026
- 35 9th Ave$1.3M2 bd · 2 ba · 1,680 ft² · Sold $1.3M · Sep 2026
- 1424 Hemlock Ave$990K2 bd · 1 ba · 820 ft² · Sold $1.1M · Sep 2026
- 845 N Humboldt St$525K1 bd · 1 ba · 693 ft² · Sold $535K · Sep 2026
- 240 N Fremont St$1.2M2 bd · 1 ba · 1,320 ft² · Sold $1.2M · Sep 2026
Assigned schools
Explore the area
See this home in context
Open 800 N Delaware St on TopHap’s interactive map to compare it against every sale nearby, overlay school zones and flood risk, and run a CMA.
Open in map