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CondominiumResidential

800 Grand Ave

DIAMOND BAR, CA 91765
4.48 ac
Lot SizeThe size of the land the home sits on, from county records.
1992
Year BuiltThe year the home was originally built, according to county records.
Built 199254 units814–1,047 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.
$450K
Median unit valueThe middle unit value in this building by our estimate: half the units are worth more, half less.
$534
Median $/ft²The middle price per square foot across the building's units, by our current estimates. Useful for comparing units of different sizes.

+4.3%vs the Diamond Bar ZIP median sale $/ft² ($512)

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.
+5.3%per yeartypical hold 6.1 yrsfrom 99 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
19931997200220062011201620212025
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
19931997200220062011201620212025

159 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.
$413K$458K$503K$547K814 ft²861 ft²907 ft²954 ft²1,000 ft²1,047 ft²
2 bd
2 bed
54 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 · 828 ft²
36 units
2 bd · 2 ba · 1,047 ft²
10 units
2 bd · 2 ba · 814 ft²
8 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.

$413K–$426K
5 units
$430K–$445K
18 units
$447K–$463K
14 units
$469K–$471K
2 units
$491K–$491K
2 units
$500K–$500K
1 unit
$519K–$530K
5 units
$532K–$547K
7 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.46%
Company-ownedUnits owned through an LLC, trust, or other company — a rough proxy for investor ownership.26%
Typical owner tenureThe middle number of years since each unit last changed hands — how long the current owners have been in place.10.8 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.46%
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.30%
Median owner equityThe middle dollar amount of equity (value minus loans) unit owners hold in this building.$480,824
Median tax billThe middle annual property tax bill among the building's units.$4,753
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 A20Jul 23, 2025$515,000Unit A3Sep 30, 2024$539,000Unit D1Mar 18, 2024$600,000Unit A12Jan 3, 2024$510,000Unit B6Jan 5, 2023$523,000Unit A24Sep 9, 2022$450,000Unit D3Aug 23, 2022$515,000Unit A11Jul 11, 2022$500,000Unit D13Jul 8, 2022$440,000Unit D3Apr 25, 2022$509,000

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

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
CountyLOS ANGELES
ConstructionThe main material the home's frame and walls are built from.Wood (Unspecified)
HeatingThe type of heating system in the home.Central
CoolingThe type of cooling or air conditioning in the home.Central
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.

M
Chaparral Middle SchoolA+
Middle · Grades 6–8 · 0.7 mi
E
Maple Hill Elementary SchoolA+
Elementary · Grades KG–5 · 0.7 mi
H
Diamond Bar High SchoolA
High · Grades 9–12 · 1.9 mi

District: Walnut Valley Unified School District

Neighborhood · ZIP 91765These 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.46
Air pollutionOverall air pollution compared with the rest of the country, where 100 is average. Lower is cleaner.101
EarthquakeEarthquake risk and likely building damage compared with the rest of the country, where 100 is average. Scores can run far above 100.388

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.96%
Bachelor's or higherThe share of adults 25 and older whose highest degree is a bachelor's degree.35%
Poverty rateThe share of people whose household income falls below the federal poverty line, which varies by family size.9.2%
UnemploymentThe share of men 16 and older who are out of work and actively looking. Only men are counted in this figure.1.7%
PopulationHow many people live in this area.41,302
DensityPeople per square mile. Higher numbers mean a more crowded, urban area.2,738 / mi²
Median incomeThe middle household income here — half of households earn more, half earn less.$98,979
Average incomeThe average household income. It runs higher than the median when a few high earners pull it up.$125,933
Average tempThe average temperature here across a full year.63°F
Annual precipHow much rain and melted snow falls here in a typical year.19 in
SunshineThe share of daylight hours that get direct sun in a typical year, counting cloud cover.73%

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 Grand Ave # A1
2 bd · 2 ba · 1,047 ft²
$526K
800 Grand Ave # B1
2 bd · 2 ba · 828 ft²
$491K
800 Grand Ave # C1
2 bd · 2 ba · 1,047 ft²
$540K
800 Grand Ave # D1
2 bd · 2 ba · 1,047 ft²
$538K
800 Grand Ave # A2
2 bd · 2 ba · 1,047 ft²
$520K
800 Grand Ave # B2
2 bd · 2 ba · 828 ft²
$442K
800 Grand Ave # C2
2 bd · 2 ba · 1,047 ft²
$523K
800 Grand Ave # D2
2 bd · 2 ba · 1,047 ft²
$535K
800 Grand Ave # A3
2 bd · 2 ba · 814 ft²
$547K
800 Grand Ave # B3
2 bd · 2 ba · 828 ft²
$443K
800 Grand Ave # C3
2 bd · 2 ba · 814 ft²
$437K
800 Grand Ave # D3
2 bd · 2 ba · 814 ft²
$536K
800 Grand Ave # A4
2 bd · 2 ba · 814 ft²
$431K
800 Grand Ave # B4
2 bd · 2 ba · 828 ft²
$433K
800 Grand Ave # C4
2 bd · 2 ba · 814 ft²
$433K
800 Grand Ave # D4
2 bd · 2 ba · 814 ft²
$440K
800 Grand Ave # A5
2 bd · 2 ba · 828 ft²
$425K
800 Grand Ave # B5
2 bd · 2 ba · 814 ft²
$424K
800 Grand Ave # C5
2 bd · 2 ba · 828 ft²
$413K
800 Grand Ave # D5
2 bd · 2 ba · 828 ft²
$440K
800 Grand Ave # A6
2 bd · 2 ba · 828 ft²
$451K
800 Grand Ave # B6
2 bd · 2 ba · 814 ft²
$469K
800 Grand Ave # C6
2 bd · 2 ba · 828 ft²
$449K
800 Grand Ave # D6
2 bd · 2 ba · 828 ft²
$445K
800 Grand Ave # A7
2 bd · 2 ba · 828 ft²
$453K
800 Grand Ave # C7
2 bd · 2 ba · 828 ft²
$441K
800 Grand Ave # D7
2 bd · 2 ba · 828 ft²
$455K
800 Grand Ave # A8
2 bd · 2 ba · 828 ft²
$434K
800 Grand Ave # C8
2 bd · 2 ba · 828 ft²
$437K
800 Grand Ave # D8
2 bd · 2 ba · 828 ft²
$447K
800 Grand Ave # A9
2 bd · 2 ba · 828 ft²
$453K
800 Grand Ave # C9
2 bd · 2 ba · 1,047 ft²
$491K
800 Grand Ave # D9
2 bd · 2 ba · 828 ft²
$425K
800 Grand Ave # A10
2 bd · 2 ba · 828 ft²
$458K
800 Grand Ave # C10
2 bd · 2 ba · 1,047 ft²
$530K
800 Grand Ave # D10
2 bd · 2 ba · 828 ft²
$426K
800 Grand Ave # A11
2 bd · 2 ba · 828 ft²
$471K
800 Grand Ave # D11
2 bd · 2 ba · 828 ft²
$457K
800 Grand Ave # A12
2 bd · 2 ba · 828 ft²
$500K
800 Grand Ave # D12
2 bd · 2 ba · 828 ft²
$434K
800 Grand Ave # A13
2 bd · 2 ba · 828 ft²
$456K
800 Grand Ave # D13
2 bd · 2 ba · 1,047 ft²
$537K
800 Grand Ave # A14
2 bd · 2 ba · 828 ft²
$457K
800 Grand Ave # D14
2 bd · 2 ba · 1,047 ft²
$532K
800 Grand Ave # A15
2 bd · 2 ba · 828 ft²
$449K
800 Grand Ave # A16
2 bd · 2 ba · 828 ft²
$430K
800 Grand Ave # A17
2 bd · 2 ba · 828 ft²
$432K
800 Grand Ave # A18
2 bd · 2 ba · 828 ft²
$439K
800 Grand Ave # A19
2 bd · 2 ba · 828 ft²
$442K
800 Grand Ave # A20
2 bd · 2 ba · 828 ft²
$519K
800 Grand Ave # A21
2 bd · 2 ba · 828 ft²
$462K
800 Grand Ave # A22
2 bd · 2 ba · 828 ft²
$445K
800 Grand Ave # A23
2 bd · 2 ba · 828 ft²
$449K
800 Grand Ave # A24
2 bd · 2 ba · 828 ft²
$463K

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

About 800 Grand Ave

How many units are in 800 Grand Ave, Diamond Bar, CA?

800 Grand Ave, Diamond Bar, CA has 54 residential units across built in 1992, according to county assessor records.

What is a unit at 800 Grand Ave, Diamond Bar, CA worth?

The median TopHap Estimate across the 54 units at 800 Grand Ave, Diamond Bar, CA is $450,245. That works out to $534 per square foot. Units run from 814 to 1,047 square feet. Estimates are modelled from recorded sales and assessments, not appraisals.

Is 800 Grand Ave, Diamond Bar, CA expensive for Diamond Bar?

Units at 800 Grand Ave, Diamond Bar, CA carry a median of $534 per square foot, 4% above the Diamond Bar median of $512 per square foot.

How often do units sell at 800 Grand Ave, Diamond Bar, CA?

0 units at 800 Grand Ave, Diamond Bar, CA sold in the last 12 months, out of 159 recorded arms-length sales all time. That is a turnover rate of 0.0% of the building per year.

Have units at 800 Grand Ave, Diamond Bar, CA appreciated?

Across 99 repeat sales of the same unit, 800 Grand Ave, Diamond Bar, CA returned a median 5.3% 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 6.1 years.

What floor plans does 800 Grand Ave, Diamond Bar, CA have?

The most common plan at 800 Grand Ave, Diamond Bar, CA is a 2-bedroom of 828 square feet, repeated 36 times, with a median estimate of $446,156. TopHap identifies 3 recurring plans in the building.

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