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CondominiumResidential

1851 Harrison St

CONCORD, CA 94520
829 ft²
Lot SizeThe size of the land the home sits on, from county records.
1980
Year BuiltThe year the home was originally built, according to county records.
1
StoriesHow many floors the home has above ground.
1
ParkingThe number of parking spaces on the property, including the garage.
Built 198020 units816–857 ft²
$6M
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.
$298K
Median unit valueThe middle unit value in this building by our estimate: half the units are worth more, half less.
$363
Median $/ft²The middle price per square foot across the building's units, by our current estimates. Useful for comparing units of different sizes.

-32.4%vs the Concord ZIP median sale $/ft² ($537)

Sales Performance

$298K
Median sale (12 mo)The middle sale price among this building's units that sold in the last 12 months, from recorded deeds.
-8.5%
1-yr changeHow the building's median sale price over the last 12 months compares with the 12 months before that.
2
Sales (12 mo)Units in this building that sold in the last 12 months, from recorded arms-length deeds.
10.0%
Turnover (12 mo)The share of units that changed hands in the last 12 months. Around 4–6% a year is typical; much higher can signal investor churn or a wave of exits.
This building's own appreciationThe building's own appreciation: for every unit that sold twice (held over a year), we compute its yearly price change between the two sales and take the middle value. This is the cleanest read on how this specific building performs, because it compares each unit to itself.
+4.4%per yeartypical hold 6.3 yrsfrom 58 same-unit resales
Median sale price (yearly, all time)Every recorded arms-length sale in the building since records begin, grouped by year: the bars count sales and the line tracks the median price paid.MedianSales
19811991199820022008201320212026
Sale price per ft² (yearly, all time)The middle price per square foot across the building's units, by our current estimates. Useful for comparing units of different sizes.$/ft²
19811991199820022008201320212026

80 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.
$270K$290K$310K$329K816 ft²824 ft²832 ft²841 ft²849 ft²857 ft²
2 bd
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 · 1 ba · 816 ft²
16 units
2 bd · 1 ba · 857 ft²
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.

$270K–$274K
3 units
$285K–$285K
1 unit
$287K–$287K
2 units
$292K–$300K
5 units
$301K–$303K
3 units
$310K–$310K
1 unit
$321K–$322K
2 units
$322K–$329K
3 units

Ownership & Financing

Owner-occupiedThe share of units where the owner lives in the unit, per county records. The rest are second homes or rentals.50%
Company-ownedUnits owned through an LLC, trust, or other company — a rough proxy for investor ownership.25%
Typical owner tenureThe middle number of years since each unit last changed hands — how long the current owners have been in place.8.4 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.13%
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.57%
Median owner equityThe middle dollar amount of equity (value minus loans) unit owners hold in this building.$312,473
Median tax billThe middle annual property tax bill among the building's units.$4,549
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 15Jul 1, 2026$300,000Unit 13Apr 13, 2026$295,000Unit 6Aug 22, 2025$325,000Unit 11Aug 30, 2024$345,000Unit 2Aug 6, 2024$299,000Unit 17Jun 20, 2024$338,000Unit 16Jan 10, 2024$358,000Unit 6May 9, 2023$365,000Unit 7Sep 13, 2021$355,000Unit 15Jun 17, 2021$350,000

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

Overall riskThe average of the five hazard scores below, on a 0 to 100 scale. Higher means greater projected risk over the coming decades.18
1
FloodProjected flooding risk from rivers, heavy rain, and storm surge, scored 0 to 100. Higher is riskier.
1
WildfireProjected wildfire risk, scored 0 to 100, based on how much land burns in a typical year. Higher is riskier.
40
HeatProjected heat risk, scored 0 to 100, based on how many extremely hot days a year are expected. Higher is riskier.
34
StormProjected risk from heavy rainstorms, scored 0 to 100, based on how often extreme rainfall is expected. Higher is riskier.
14
DroughtProjected water shortage risk, scored 0 to 100. Higher means more strain on the local water supply.

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
CountyCONTRA COSTA
Effective Year BuiltAn adjusted build year that accounts for condition and major remodels. A big renovation can make a home count as newer than it is.1981
Lot (acres)The size of the land the home sits on, from county records.0.02
CoolingThe type of cooling or air conditioning in the home.Central
GarageWhether the property has a garage, and details like whether it is attached to the home.Garage, Attached
PoolWhether the property has a pool, and what kind, such as in-ground.No

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

H
Mt. Diablo High SchoolD+
High · Grades 9–12 · 0.5 mi
E
Meadow Homes Elementary SchoolD
Elementary · Grades KG–5 · 0.8 mi
M
Valley View Middle SchoolA
Middle · Grades 6–8 · 1.7 mi

District: Mount Diablo Unified School District

Neighborhood · ZIP 94520These 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.122
Air pollutionOverall air pollution compared with the rest of the country, where 100 is average. Lower is cleaner.85
EarthquakeEarthquake risk and likely building damage compared with the rest of the country, where 100 is average. Scores can run far above 100.583

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.97%
Bachelor's or higherThe share of adults 25 and older whose highest degree is a bachelor's degree.22%
Poverty rateThe share of people whose household income falls below the federal poverty line, which varies by family size.12%
UnemploymentThe share of men 16 and older who are out of work and actively looking. Only men are counted in this figure.1.6%
PopulationHow many people live in this area.41,556
DensityPeople per square mile. Higher numbers mean a more crowded, urban area.2,414 / mi²
Median incomeThe middle household income here — half of households earn more, half earn less.$79,669
Average incomeThe average household income. It runs higher than the median when a few high earners pull it up.$102,256
Average tempThe average temperature here across a full year.59°F
Annual precipHow much rain and melted snow falls here in a typical year.18 in
SunshineThe share of daylight hours that get direct sun in a typical year, counting cloud cover.78%

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.

1851 Harrison St
2 bd · 1 ba · 816 ft²
$296K
1851 Harrison St # 2
2 bd · 1 ba · 857 ft²
$292K
1851 Harrison St # 3
2 bd · 1 ba · 857 ft²
$310K
1851 Harrison St # 4
2 bd · 1 ba · 816 ft²
$303K
1851 Harrison St
2 bd · 1 ba · 816 ft²
$293K
1851 Harrison St # 6
2 bd · 1 ba · 857 ft²
$322K
1851 Harrison St # 7
2 bd · 1 ba · 857 ft²
$322K
1851 Harrison St
2 bd · 1 ba · 816 ft²
$270K
1851 Harrison St # 9
2 bd · 1 ba · 816 ft²
$287K
1851 Harrison St # 10
2 bd · 1 ba · 816 ft²
$287K
1851 Harrison St # 11
2 bd · 1 ba · 816 ft²
$329K
1851 Harrison St # 12
2 bd · 1 ba · 816 ft²
$274K
1851 Harrison St # 13
2 bd · 1 ba · 816 ft²
$294K
1851 Harrison St # 14
2 bd · 1 ba · 816 ft²
$285K
1851 Harrison St # 15
2 bd · 1 ba · 816 ft²
$300K
1851 Harrison St # 16
2 bd · 1 ba · 816 ft²
$327K
1851 Harrison St # 17
2 bd · 1 ba · 816 ft²
$321K
1851 Harrison St
2 bd · 1 ba · 816 ft²
$301K
1851 Harrison St # 19
2 bd · 1 ba · 816 ft²
$271K
1851 Harrison St # 20
2 bd · 1 ba · 816 ft²
$302K

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

About 1851 Harrison St

How many units are in 1851 Harrison St, Concord, CA?

1851 Harrison St, Concord, CA has 20 residential units across built in 1980, according to county assessor records.

What is a unit at 1851 Harrison St, Concord, CA worth?

The median TopHap Estimate across the 20 units at 1851 Harrison St, Concord, CA is $298,014. That works out to $363 per square foot. Units run from 816 to 857 square feet. Estimates are modelled from recorded sales and assessments, not appraisals.

Is 1851 Harrison St, Concord, CA expensive for Concord?

Units at 1851 Harrison St, Concord, CA carry a median of $363 per square foot, 32% below the Concord median of $537 per square foot.

How often do units sell at 1851 Harrison St, Concord, CA?

2 units at 1851 Harrison St, Concord, CA sold in the last 12 months, out of 80 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 $298K.

Have units at 1851 Harrison St, Concord, CA appreciated?

Across 58 repeat sales of the same unit, 1851 Harrison St, Concord, CA returned a median 4.4% 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 6.3 years.

What floor plans does 1851 Harrison St, Concord, CA have?

The most common plan at 1851 Harrison St, Concord, CA is a 2-bedroom of 816 square feet, repeated 16 times, with a median estimate of $295,191. TopHap identifies 2 recurring plans in the building.

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