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CondominiumResidential

340 Grand Blvd

SAN MATEO, CA 94401
0.66 ac
Lot SizeThe size of the land the home sits on, from county records.
1987
Year BuiltThe year the home was originally built, according to county records.
1
StoriesHow many floors the home has above ground.
Built 19873 floors28 units760–1,000 ft²
$16M
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.
$679K
Median unit valueThe middle unit value in this building by our estimate: half the units are worth more, half less.
$695
Median $/ft²The middle price per square foot across the building's units, by our current estimates. Useful for comparing units of different sizes.

-26.4%vs the San Mateo ZIP median sale $/ft² ($944)

Sales Performance

$675K
Median sale (12 mo)The middle sale price among this building's units that sold in the last 12 months, from recorded deeds.
—
1-yr changeHow the building's median sale price over the last 12 months compares with the 12 months before that.
1
Sales (12 mo)Units in this building that sold in the last 12 months, from recorded arms-length deeds.
3.6%
Turnover (12 mo)The share of units that changed hands in the last 12 months. Around 4–6% a year is typical; much higher can signal investor churn or a wave of exits.
This building's own appreciationThe building's own appreciation: for every unit that sold twice (held over a year), we compute its yearly price change between the two sales and take the middle value. This is the cleanest read on how this specific building performs, because it compares each unit to itself.
+5.1%per yeartypical hold 7.6 yrsfrom 34 same-unit resales
Median sale price (yearly, all time)Every recorded arms-length sale in the building since records begin, grouped by year: the bars count sales and the line tracks the median price paid.MedianSales
19881993199820042009201420182026
Sale price per ft² (yearly, all time)The middle price per square foot across the building's units, by our current estimates. Useful for comparing units of different sizes.$/ft²
19881993199820042009201420182026

62 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.
$506K$607K$708K$809K760 ft²808 ft²856 ft²904 ft²952 ft²1,000 ft²
1 bd2 bd
1 bed
8 units
2 bed
20 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.
2 bd · 2 ba · 1,000 ft²
20 units
1 bd · 1 ba · 760 ft²
6 units
1 bd · 1 ba · 1,000 ft²
2 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.

$506K–$526K
4 units
$552K–$552K
1 unit
$603K–$603K
1 unit
$650K–$656K
4 units
$658K–$688K
4 units
$698K–$714K
8 units
$802K–$809K
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
$691/ft²
Floor 2
$678/ft²
Floor 3
$721/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 ·03
$700/ft²
Line ·01
$682/ft²
Line ·10
$665/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.68%
Company-ownedUnits owned through an LLC, trust, or other company — a rough proxy for investor ownership.43%
Typical owner tenureThe middle number of years since each unit last changed hands — how long the current owners have been in place.27.6 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.0%
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.38%
Median owner equityThe middle dollar amount of equity (value minus loans) unit owners hold in this building.$746,295
Median tax billThe middle annual property tax bill among the building's units.$5,283
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 12Jun 1, 2026$675,000Unit 302Aug 20, 2024$860,000Unit 302Mar 16, 2021$782,000Unit 12Jul 15, 2019$835,000Unit 17May 23, 2018$690,000Unit 310Oct 7, 2016$675,000Unit 16Sep 30, 2016$475,000Unit 104Jul 31, 2015$630,000Unit 17Oct 20, 2014$408,000Unit 201Jul 31, 2014$500,000

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

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.11 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
Lot (acres)The size of the land the home sits on, from county records.0.66
HeatingThe type of heating system in the home.Radiant
FireplaceWhether the home has a fireplace, and what kind.Yes
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.

H
San Mateo High SchoolA-
High · Grades 9–12 · 0.3 mi
E
San Mateo Park Elementary SchoolD-
Elementary · Grades KG–5 · 0.6 mi
M
Borel Middle SchoolB
Middle · Grades 6–8 · 1.9 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.

340 Grand Blvd # 2
2 bd · 2 ba · 1,000 ft²
$712K
340 Grand Blvd # 12
2 bd · 2 ba · 1,000 ft²
$809K
340 Grand Blvd # 16
1 bd · 1 ba · 760 ft²
$523K
340 Grand Blvd # 17
1 bd · 1 ba · 760 ft²
$603K
340 Grand Blvd # 24
1 bd · 1 ba · 760 ft²
$524K
340 Grand Blvd # 25
1 bd · 1 ba · 760 ft²
$526K
340 Grand Blvd # 26
2 bd · 2 ba · 1,000 ft²
340 Grand Blvd # 101
2 bd · 2 ba · 1,000 ft²
$712K
340 Grand Blvd # 103
2 bd · 2 ba · 1,000 ft²
$712K
340 Grand Blvd # 104
2 bd · 2 ba · 1,000 ft²
$698K
340 Grand Blvd # 105
1 bd · 1 ba · 1,000 ft²
$714K
340 Grand Blvd # 106
1 bd · 1 ba · 760 ft²
$552K
340 Grand Blvd # 107
1 bd · 1 ba · 760 ft²
$506K
340 Grand Blvd # 108
2 bd · 2 ba · 1,000 ft²
340 Grand Blvd # 109
2 bd · 2 ba · 1,000 ft²
$651K
340 Grand Blvd # 110
2 bd · 2 ba · 1,000 ft²
$650K
340 Grand Blvd # 201
2 bd · 2 ba · 1,000 ft²
$652K
340 Grand Blvd # 203
2 bd · 2 ba · 1,000 ft²
$677K
340 Grand Blvd # 204
2 bd · 2 ba · 1,000 ft²
340 Grand Blvd # 205
1 bd · 1 ba · 1,000 ft²
$714K
340 Grand Blvd # 208
2 bd · 2 ba · 1,000 ft²
$656K
340 Grand Blvd # 209
2 bd · 2 ba · 1,000 ft²
$713K
340 Grand Blvd # 210
2 bd · 2 ba · 1,000 ft²
$658K
340 Grand Blvd # 301
2 bd · 2 ba · 1,000 ft²
$681K
340 Grand Blvd # 302
2 bd · 2 ba · 1,000 ft²
$802K
340 Grand Blvd # 303
2 bd · 2 ba · 1,000 ft²
$712K
340 Grand Blvd # 309
2 bd · 2 ba · 1,000 ft²
340 Grand Blvd # 310
2 bd · 2 ba · 1,000 ft²
$688K

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

About 340 Grand Blvd

How many units are in 340 Grand Blvd, San Mateo, CA?

340 Grand Blvd, San Mateo, CA has 28 residential units across 3 floors, built in 1987, according to county assessor records.

What is a unit at 340 Grand Blvd, San Mateo, CA worth?

The median TopHap Estimate across the 28 units at 340 Grand Blvd, San Mateo, CA is $678,942. That works out to $695 per square foot. Units run from 760 to 1,000 square feet. Estimates are modelled from recorded sales and assessments, not appraisals.

Is 340 Grand Blvd, San Mateo, CA expensive for San Mateo?

Units at 340 Grand Blvd, San Mateo, CA carry a median of $695 per square foot, 26% below the San Mateo median of $944 per square foot.

How often do units sell at 340 Grand Blvd, San Mateo, CA?

1 units at 340 Grand Blvd, San Mateo, CA sold in the last 12 months, out of 62 recorded arms-length sales all time. That is a turnover rate of 3.6% of the building per year. The median sale over that period was $675K.

Have units at 340 Grand Blvd, San Mateo, CA appreciated?

Across 34 repeat sales of the same unit, 340 Grand Blvd, San Mateo, CA returned a median 5.1% 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 7.6 years.

What floor plans does 340 Grand Blvd, San Mateo, CA have?

The most common plan at 340 Grand Blvd, San Mateo, CA is a 2-bedroom of 1,000 square feet, repeated 20 times, with a median estimate of $692,777. TopHap identifies 3 recurring plans in the building.

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