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© 2026 SHAYA LOWENSTEIN · LYON STAHL INVESTMENT REAL ESTATE830 S PACIFIC COAST HWY, SUITE D-200, EL SEGUNDO, CA 90245SHAYA@LYONSTAHL.COM · DRE #01942326
BUILDINGS/3320 PROSPECT AVE
/// BUILDING FILE · ROLL 2025

3320 PROSPECT AVE.

Rosemead, CA 91770 · APN 5286-014-036

/// WHERE DO WE REACH YOU?

ONE EMAIL, USED TO KEEP THIS LIST AND TO TELL YOU IF A WATCHED BUILDING LISTS OR SELLS. UNSUBSCRIBE ANY TIME.

UNITS

3

BUILDING SF

6,557

SF / UNIT

2,186

YEAR BUILT

2020

BEDROOMS

12

BATHROOMS

13

USE · CODE 0300

TRIPLEX

/// ASSESSED VALUE
LAND$938,708
IMPROVEMENTS$931,108
TOTAL$1,869,816
LAND BASE YEAR2018
OWNERSHIP TENUREAPPROX. 8 YEARS

PROP 13 ASSESSED VALUES — USUALLY WELL BELOW MARKET ON LONG-HELD BUILDINGS.

/// LAST TRANSFER
RECORDEDAUG 11, 2021

No market sale detected on this parcel since 2021. The last recorded transfer may have been a refinance, trust move, or family transfer that didn't reset the Prop 13 base.

/// RENT CONTROL

LIKELY EXEMPT (NEW CONSTRUCTION)

Built 2020 — buildings under 15 years old are exempt from AB 1482; the state cap applies once the building turns 15.

AB 1482 VS RSO →INFERRED FROM PUBLIC RECORDS — VERIFY WITH LAHD / ZIMAS BEFORE RELYING ON IT.
/// ZIP 91770

Recent sales nearby.

ADDRESSSOLDEST. PRICEEST. $/UNITUNITS
2632 GLADYS AVE→DEC 2024EST.$2,800,000$350,000UNITS88339 WHITMORE ST→DEC 2024EST.$1,450,000$483,333UNITS33337 ALANREED AVE→DEC 2024EST.$1,020,000$510,000UNITS21315 DELTA AVE→DEC 2024EST.$2,071,000$517,750UNITS43329 JACKSON AVE→DEC 2024EST.$1,122,000$374,000UNITS37562 HELLMAN AVE→DEC 2024EST.$1,200,000$400,000UNITS39215 GLENDON WAY→DEC 2024EST.$4,103,000$373,000UNITS112535 STRATHMORE AVE→NOV 2024EST.$1,550,000$516,667UNITS3

PRICES ESTIMATED FROM ASSESSOR REASSESSMENT AT SALE (ASSESSED VALUE DEFLATED 2%/YR) — NOT VERIFIED CLOSING PRICES.

/// COMPARE

Buildings like this one.

ON PROSPECT AVE · ZIP 91770

2706 PROSPECT AVE→2 UNITS · BUILT 1942 · DUPLEX2712 PROSPECT AVE→2 UNITS · BUILT 1938 · DUPLEX2718 PROSPECT AVE→2 UNITS · BUILT 1923 · DUPLEX2719 PROSPECT AVE→2 UNITS · BUILT 1951 · DUPLEX2727 PROSPECT AVE→2 UNITS · BUILT 1923 · DUPLEX2728 PROSPECT AVE→2 UNITS · BUILT 1926 · DUPLEX

SIMILAR SIZE AND ERA IN 91770

3025 JACKSON AVE→3 UNITS · BUILT 2017 · 6,387 SF8056 EMERSON PL→3 UNITS · BUILT 2020 · 6,178 SF
EVERY BUILDING IN 91770 →
/// COMMON QUESTIONS · 3320 PROSPECT AVE

The short answers.

Is 3320 Prospect Ave rent controlled?

Built 2020 — buildings under 15 years old are exempt from AB 1482; the state cap applies once the building turns 15. This is an inference from public assessor records, not a determination — confirm the certificate of occupancy date with the LA Housing Department or ZIMAS before you rely on it for pricing or notices.

How many units does 3320 Prospect Ave have?

County records list 3 units at 3320 Prospect Ave, classified as triplex across 6,557 square feet of building area, averaging about 2,186 square feet per unit. Unit counts on the roll can lag permitted conversions and unpermitted additions in both directions.

When was 3320 Prospect Ave built?

The assessor roll gives a build year of 2020, which is after the October 1978 RSO cutoff. Age drives more than character here: it sets rent-cap exposure, seismic retrofit obligations, and what a lender will underwrite.

When did 3320 Prospect Ave last change hands?

The most recent transfer on the roll was recorded August 2021. Not every recorded transfer is a market sale — refinances, trust transfers, and family conveyances all appear in the same field, and those do not reset the assessed value.

What is 3320 Prospect Ave assessed at, and is that what it is worth?

The current assessed value is $1,869,816 ($938,708 land, $931,108 improvements). Assessed value is not market value. Under Proposition 13 it resets only on a change of ownership and then climbs about 2% a year, so a long-held building is often assessed far below what it would trade for.

How do I find out what 3320 Prospect Ave would sell for today?

Public records give you the frame — units, size, age, assessed value, when it last traded — but pricing needs in-place rents, expenses, and the condition of the units, none of which appear in county data. A broker valuation puts closed comps and a rent survey against the actual rent roll. Shaya Lowenstein does that free for LA multifamily owners, typically within 48 hours, with no obligation to list.

/// OWNER READING
WHAT IS MY BUILDING WORTH? →SELLING WITH TENANTS IN PLACE →HOW LA RSO WORKS →

Own this building?

FREE, CONFIDENTIAL VALUATION FROM CLOSED COMPS — 48H TURNAROUND.

WHAT'S IT WORTH_TALK TO SHAYA →

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