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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/5617 MAMMOTH AVE
/// BUILDING FILE · ROLL 2025

5617 MAMMOTH AVE.

Los Angeles, CA 91401 · APN 2246-026-008

/// 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

2

BUILDING SF

2,431

SF / UNIT

1,216

YEAR BUILT

1948

BEDROOMS

4

BATHROOMS

4

USE · CODE 0200

DUPLEX

/// ASSESSED VALUE
LAND$104,125
IMPROVEMENTS$109,165
TOTAL$213,290
LAND BASE YEAR1995
OWNERSHIP TENUREAPPROX. 31 YEARS

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

/// LAST TRANSFER
RECORDEDNOV 9, 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 COVERED BY LA RSO

Built 1948 in the City of Los Angeles with 2 units — pre-October 1978 multifamily inside city limits is generally under the Rent Stabilization Ordinance, capping annual increases and restricting evictions.

HOW LA RSO WORKS →INFERRED FROM PUBLIC RECORDS — VERIFY WITH LAHD / ZIMAS BEFORE RELYING ON IT.
/// ZIP 91401

Recent sales nearby.

ADDRESSSOLDEST. PRICEEST. $/UNITUNITS
6220 FULTON AVE→DEC 2024EST.$8,740,000$291,333UNITS306444 MAMMOTH AVE→DEC 2024EST.$1,375,000$229,167UNITS65370 CIRCLE DR→NOV 2024EST.$1,375,000$458,333UNITS36729 FULTON AVE→NOV 2024EST.$1,235,000$205,833UNITS614112 GILMORE ST→NOV 2024EST.$1,040,000$173,333UNITS614243 VICTORY BLVD→OCT 2024EST.$2,665,000$533,000UNITS56311 HAZELTINE AVE→OCT 2024EST.$915,000$457,500UNITS25623 WOODMAN AVE→OCT 2024EST.$1,392,000$464,000UNITS3

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

/// COMPARE

Buildings like this one.

ON MAMMOTH AVE · ZIP 91401

5540 MAMMOTH AVE→9 UNITS · BUILT 1958 · 5+ UNITS5551 MAMMOTH AVE→5 UNITS · BUILT 1947 · 5+ UNITS6422 MAMMOTH AVE→4 UNITS · BUILT 1937 · FOURPLEX6429 MAMMOTH AVE→2 UNITS · BUILT 1959 · DUPLEX6435 MAMMOTH AVE→2 UNITS · BUILT 1959 · DUPLEX6438 MAMMOTH AVE→10 UNITS · BUILT 1963 · 5+ UNITS

SIMILAR SIZE AND ERA IN 91401

13011 OXNARD ST→2 UNITS · BUILT 1948 · 2,007 SF13335 BURBANK BLVD→2 UNITS · BUILT 1948 · 2,054 SF13446 ERWIN ST→2 UNITS · BUILT 1935 · 2,164 SF13454 BURBANK BLVD→2 UNITS · BUILT 1950 · 1,638 SF13559 BURBANK BLVD→2 UNITS · BUILT 1947 · 1,822 SF13606 BURBANK BLVD→2 UNITS · BUILT 1951 · 1,872 SF
EVERY BUILDING IN 91401 →RSO, 5–12 UNITS →
/// COMMON QUESTIONS · 5617 MAMMOTH AVE

The short answers.

Is 5617 Mammoth Ave rent controlled?

Built 1948 in the City of Los Angeles with 2 units — pre-October 1978 multifamily inside city limits is generally under the Rent Stabilization Ordinance, capping annual increases and restricting evictions. 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 5617 Mammoth Ave have?

County records list 2 units at 5617 Mammoth Ave, classified as duplex across 2,431 square feet of building area, averaging about 1,216 square feet per unit. Unit counts on the roll can lag permitted conversions and unpermitted additions in both directions.

When was 5617 Mammoth Ave built?

The assessor roll gives a build year of 1948, which puts it in the pre-1979 stock that the LA Rent Stabilization Ordinance generally covers inside city limits. Age drives more than character here: it sets rent-cap exposure, seismic retrofit obligations, and what a lender will underwrite.

When did 5617 Mammoth Ave last change hands?

The most recent transfer on the roll was recorded November 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 5617 Mammoth Ave assessed at, and is that what it is worth?

The current assessed value is $213,290 ($104,125 land, $109,165 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 — and this one has held its base year for roughly 31 years.

Would the owner of 5617 Mammoth Ave face a big tax bill on a sale?

Possibly. A base year going back roughly 31 years usually means a low tax basis, and a low basis means a large taxable gain on a straight sale — capital gains plus depreciation recapture, with California taxing gains at ordinary income rates. It is also why long-held buildings so often sell through a 1031 exchange instead, or pass through an estate for the step-up in basis.

How do I find out what 5617 Mammoth 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.

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