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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/21400 PLANE TREE LN
/// BUILDING FILE · ROLL 2025

21400 PLANE TREE LN.

Santa Clarita, CA 91321 · APN 2833-033-107

/// 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

11

BUILDING SF

74,112

SF / UNIT

6,737

YEAR BUILT

1991

BEDROOMS

99

BATHROOMS

99

USE · CODE 0501

5+ UNITS

/// ASSESSED VALUE
LAND$468,295
IMPROVEMENTS$6,842,195
TOTAL$7,310,490
LAND BASE YEAR1988
OWNERSHIP TENUREAPPROX. 38 YEARS

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

/// LAST TRANSFER
RECORDEDOCT 5, 1987

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 UNDER AB 1482 STATE CAP (5% + CPI, MAX 10%)

Outside LA RSO coverage on these records — most California multifamily over 15 years old falls under the AB 1482 statewide cap of 5% plus CPI, never more than 10% per year.

AB 1482 VS RSO →INFERRED FROM PUBLIC RECORDS — VERIFY WITH LAHD / ZIMAS BEFORE RELYING ON IT.
/// ZIP 91321

Recent sales nearby.

ADDRESSSOLDEST. PRICEEST. $/UNITUNITS
24218 ARCH ST→DEC 2024EST.$460,000$230,000UNITS222734 8TH ST→NOV 2024EST.$1,210,000$201,667UNITS622739 8TH ST→NOV 2024EST.$4,700,000$313,333UNITS1524862 MEADVIEW AVE→OCT 2024EST.$2,000,000$1,000,000UNITS224700 VALLEY ST→SEP 2024EST.$24,286,570$97,930UNITS24824051 RACE ST→SEP 2024EST.$686,000$343,000UNITS222710 8TH ST→JUN 2024EST.$5,750,000$261,364UNITS2224606 WALNUT ST→MAY 2024EST.$885,000$295,000UNITS3

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

/// COMPARE

Buildings like this one.

SIMILAR SIZE AND ERA IN 91321

21311 ALDER DR→11 UNITS · BUILT 1991 · 74,112 SF21422 GRAPE LILY CIR→11 UNITS · BUILT 1991 · 74,112 SF22734 8TH ST→6 UNITS · BUILT 1977 · 3,866 SF22752 15TH ST→9 UNITS · BUILT 1983 · 6,325 SF23788 VALLE DEL ORO→12 UNITS · BUILT 1985 · 11,344 SF24270 PINE ST→12 UNITS · BUILT 1985 · 14,487 SF
EVERY BUILDING IN 91321 →
/// COMMON QUESTIONS · 21400 PLANE TREE LN

The short answers.

Is 21400 Plane Tree Ln rent controlled?

Outside LA RSO coverage on these records — most California multifamily over 15 years old falls under the AB 1482 statewide cap of 5% plus CPI, never more than 10% per year. 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 21400 Plane Tree Ln have?

County records list 11 units at 21400 Plane Tree Ln, classified as 5+ units across 74,112 square feet of building area, averaging about 6,737 square feet per unit. Unit counts on the roll can lag permitted conversions and unpermitted additions in both directions.

When was 21400 Plane Tree Ln built?

The assessor roll gives a build year of 1991, 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 21400 Plane Tree Ln last change hands?

The most recent transfer on the roll was recorded October 1987. 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 21400 Plane Tree Ln assessed at, and is that what it is worth?

The current assessed value is $7,310,490 ($468,295 land, $6,842,195 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 38 years.

Would the owner of 21400 Plane Tree Ln face a big tax bill on a sale?

Possibly. A base year going back roughly 38 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 21400 Plane Tree Ln 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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