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TownhouseResidential

3505 Northwood Dr

CONCORD, CA 94520
756 ft²
Lot SizeThe size of the land the home sits on, from county records.
1971
Year BuiltThe year the home was originally built, according to county records.
2
StoriesHow many floors the home has above ground.
1
ParkingThe number of parking spaces on the property, including the garage.
Built 19716 units1,090–1,240 ft²
$2.3M
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.
$392K
Median unit valueThe middle unit value in this building by our estimate: half the units are worth more, half less.
$337
Median $/ft²The middle price per square foot across the building's units, by our current estimates. Useful for comparing units of different sizes.

-37.3%vs the Concord ZIP median sale $/ft² ($537)

Sales Performance

—
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.
0
Sales (12 mo)Units in this building that sold in the last 12 months, from recorded arms-length deeds.
0.0%
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.
+7.6%per yeartypical hold 11.5 yrsfrom 11 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
19851989199219992001200520122025
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
19851989199219992001200520122025

18 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.

2 bed
4 units
3 bed
2 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 · 1.5 ba · 1,090 ft²
4 units
3 bd · 1.5 ba · 1,240 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.

$338K–$338K
1 unit
$361K–$370K
2 units
$415K–$415K
1 unit
$425K–$428K
2 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.33%
Company-ownedUnits owned through an LLC, trust, or other company — a rough proxy for investor ownership.33%
Typical owner tenureThe middle number of years since each unit last changed hands — how long the current owners have been in place.18.8 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.57%
Median owner equityThe middle dollar amount of equity (value minus loans) unit owners hold in this building.$406,213
Median tax billThe middle annual property tax bill among the building's units.$4,139
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 DJan 24, 2025$360,000Unit CJun 1, 2017$287,000Unit ESep 19, 2012$110,000Unit DJul 3, 2012$41,500Unit DMay 31, 2012$82,000Unit DMay 19, 2005$337,000Unit DOct 23, 2003$238,000Unit COct 21, 2003$239,500Unit AMar 5, 2003$220,000Unit BSep 6, 2001$177,000

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.25
1
FloodProjected flooding risk from rivers, heavy rain, and storm surge, scored 0 to 100. Higher is riskier.
42
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.
32
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.Townhouse
StyleThe architectural style of the home, such as ranch or colonial.Townhouse
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.1973
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.

E
Sun Terrace Elementary SchoolD
Elementary · Grades KG–5 · 0.6 mi
H
Mt. Diablo High SchoolD
High · Grades 9–12 · 1.3 mi
M
El Dorado Middle SchoolD-
Middle · Grades 6–8 · 3.2 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.

3505 Northwood Dr # A
3 bd · 1.5 ba · 1,240 ft²
$428K
3505 Northwood Dr # B
2 bd · 1.5 ba · 1,090 ft²
$370K
3505 Northwood Dr # C
2 bd · 1.5 ba · 1,090 ft²
$425K
3505 Northwood Dr
2 bd · 1.5 ba · 1,090 ft²
$338K
3505 Northwood Dr # E
2 bd · 1.5 ba · 1,090 ft²
$361K
3505 Northwood Dr # F
3 bd · 1.5 ba · 1,240 ft²
$415K

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

About 3505 Northwood Dr

How many units are in 3505 Northwood Dr, Concord, CA?

3505 Northwood Dr, Concord, CA has 6 residential units across built in 1971, according to county assessor records.

What is a unit at 3505 Northwood Dr, Concord, CA worth?

The median TopHap Estimate across the 6 units at 3505 Northwood Dr, Concord, CA is $392,355. That works out to $337 per square foot. Units run from 1,090 to 1,240 square feet. Estimates are modelled from recorded sales and assessments, not appraisals.

Is 3505 Northwood Dr, Concord, CA expensive for Concord?

Units at 3505 Northwood Dr, Concord, CA carry a median of $337 per square foot, 37% below the Concord median of $537 per square foot.

How often do units sell at 3505 Northwood Dr, Concord, CA?

0 units at 3505 Northwood Dr, Concord, CA sold in the last 12 months, out of 18 recorded arms-length sales all time. That is a turnover rate of 0.0% of the building per year.

Have units at 3505 Northwood Dr, Concord, CA appreciated?

Across 11 repeat sales of the same unit, 3505 Northwood Dr, Concord, CA returned a median 7.6% 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 11.5 years.

What floor plans does 3505 Northwood Dr, Concord, CA have?

The most common plan at 3505 Northwood Dr, Concord, CA is a 2-bedroom of 1,090 square feet, repeated 4 times, with a median estimate of $365,768. TopHap identifies 2 recurring plans in the building.

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Assigned schools

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