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Santa Monica, CA 90403 · 21st St

847 21st St

Built 1933 · 2,817 sq ft
LOT 7,999 SQ FT · 3 STRUCTURES · APN 4277-004-019Lot Structure
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The home

What's on record

Year built
1933
Living area
2,817 sqft
Lot size
7,999 sqft
Structures on lot
3 main home plus another structure: a garage, guest house or ADU
Bedrooms
5
Bathrooms
4
Home type
Fourplex (4 units)
Parcel (APN)
4277-004-019

Major systems

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What's coming up

Systems and what to plan for

0 worth planning for · 2 to confirm. Open "How we estimate this" on any card.
RoofOn record 2024
Expected 2044 to 2054From the 2024 permit
HVACConfirm the year
Probably replaced alreadyWhen was it done?
Water heaterConfirm the year
Probably replaced alreadyWhen was it done?

Estimates from public records and typical system lifespans. Not an inspection. Marking something as done resets that system's clock.

Nearby on this street
1028 21st Ston record · 1,703 sqft1128 21st Ston record · 2,656 sqft1047 21st Ston record · 5,676 sqft1037 21st Ston record · 3,030 sqft1038 21st Ston record · 1,596 sqft822 21st Ston record · 3,937 sqft

See all 161 homes on 21st St →

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The story of this home

Your home's update timeline

  • 2026
    permit on file, unconfirmedRoom addition: Apt. A: Interior Remodel Of Apt. A. Convert Part Of The Existing Garage Into Apt. A. [Remodel: 286 S/F. Conversion: 372 S/F.]. Apt. D: Incorporate Part Of Apt. A Into Apt. D. Convert Part Of Existing Garage Into Apt. D. [Garage Conversion: 393 S/F. Unit A Conversion: 137 S/F.]
  • 2024
    permit on fileRoof: Roof Repair At Tile Roof, Remove 200 Sq Ft. Install New Underlayment Install Existing Tile. Class A. No Structural Work.
  • 2024
    permit on filePlumbing: Front House, #A, #B, #C - 4/Eq Shut Off Valves.

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