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Common Area (Residential)Other / Unknown
$306,360
TopHap EstimateOur estimate of what this home would sell for today, based on nearby sales, the home's size and features, and local price trends. It is a starting point, not an appraisal.· confidence 91How well the pricing models agreed with each other on this home. Higher means the estimate rests on stronger, more consistent data.· as of Jul 14, 2026

1520 ALLEGRO AVE

CONCORD, CA 94521
0
Baths
0.62 ac
Lot SizeThe size of the land the home sits on, from county records.

Valuation

$306K
$279K low$334K high

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.28
1
FloodProjected flooding risk from rivers, heavy rain, and storm surge, scored 0 to 100. Higher is riskier.
47
WildfireProjected wildfire risk, scored 0 to 100, based on how much land burns in a typical year. Higher is riskier.
44
HeatProjected heat risk, scored 0 to 100, based on how many extremely hot days a year are expected. Higher is riskier.
36
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.Common Area (Residential)
CountyCONTRA COSTA
Lot (acres)The size of the land the home sits on, from county records.0.62
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
Ayers Elementary SchoolC+
Elementary · Grades KG–5 · 0.8 mi
M
Pine Hollow Middle SchoolB-
Middle · Grades 6–8 · 0.9 mi
H
Concord High SchoolC+
High · Grades 9–12 · 2.3 mi

District: Mount Diablo Unified School District

Neighborhood · ZIP 94521These 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.96
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 100.556

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.27%
Poverty rateThe share of people whose household income falls below the federal poverty line, which varies by family size.6.3%
UnemploymentThe share of men 16 and older who are out of work and actively looking. Only men are counted in this figure.1.4%
PopulationHow many people live in this area.43,000
DensityPeople per square mile. Higher numbers mean a more crowded, urban area.3,071 / mi²
Median incomeThe middle household income here — half of households earn more, half earn less.$121,996
Average incomeThe average household income. It runs higher than the median when a few high earners pull it up.$147,183
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.78%

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

How this home compares

1520 Allegro Ave measured against every home in its neighborhood, its ZIP code and its county, using county assessor records refreshed nightly. A home can stand out in one of those areas and look ordinary in another, because each one holds a different mix of homes.

  • Worth less than 98% of homes in Contra Costa County
  • Among the largest lots in Olive

What homes are worth in Concord 94521

Each bar is how many homes fall in that price range. The marker is this home.

This home
$281K$1.5M

This home is worth more than 3% of homes in Concord 94521.

How it measures up in Concord 94521

The dot is this home. The mark in the middle is the typical home in Concord 94521.

Estimated value$306,360
CheaperTypical $725,423Pricier

Pricier than 3% of homes nearby

Lot size0.62 ac
SmallerTypical 0.17 acBigger

Bigger than 97% of homes nearby

How 1520 Allegro Ave ranks against every home in each area.
MeasureThis homeOliveConcord 94521Contra Costa County
Estimated valuepricier than$306,3609% of homes3% of homes2% of homes
Lot sizebigger than0.62 acalmost all homes97% of homes94% of homes

About 1520 Allegro Ave

How much is 1520 Allegro Ave, Concord, CA worth?

The TopHap Estimate for 1520 Allegro Ave, Concord, CA is $306,360 as of Jul 14, 2026. The likely range is $278,679 to $334,041. The estimate is modelled from recorded sales, assessments and the property's own characteristics — it is not an appraisal.

When did 1520 Allegro Ave, Concord, CA last sell?

1520 Allegro Ave, Concord, CA last sold on Jan 1, 1900, according to the county's recorded deed.

What schools serve 1520 Allegro Ave, Concord, CA?

1520 Allegro Ave, Concord, CA is assigned to Ayers Elementary School (elementary), rated C+; Pine Hollow Middle School (middle), rated B-; Concord High School (high), rated C+. All sit in Mount Diablo Unified School District. Attendance boundaries change — confirm with the district before relying on an assignment.

How does 1520 Allegro Ave, Concord, CA compare to other homes in Concord 94521?

Among the 14,273 homes in Concord 94521, it is worth more than 3% of them ($306,360 against a typical $725,423) and its lot is bigger than 97% of them (0.62 ac against a typical 0.17 ac). Measured against all of Contra Costa County, it is worth more than 2% of homes there. These shares are recounted nightly from the full county assessor record for each area, not from active listings.

More homes on Allegro Ave

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Assigned schools

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