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870 3rd Street, Santa Rosa, CA, 95404
1927 Triplex with Updated Units

870 3rd Street Santa Rosa, CA 95404

New
For Sale
$850,000

MULTI_FAMILY - Other - Santa Rosa, CA

Property Size2,242 SF
Lot Size0.09 Acres
Price / SF$379.13
Days on Market7

Property Features for 870 3rd Street

General Information

Property type
Residential Multi Family
Property subtype
Triplex
Bedrooms
3
Bathrooms
3
Rooms
Bathroom 3, Bathroom 1, Bedroom 2, Bathroom 2, Bedroom 3, Bedroom 1
Parking
2
Parking features
Covered
Standard status
Active
APN
009062016000
Size
2,242 SF
Lot size
0.09 Acres

Utilities

Sewer type
Public Sewer
Heating system
Central, Wall Furnace, Baseboard
Water source
Public

Building Details

Year built
1927
Floors in Building
2
Number of units
3
Flooring type
Wood, Tile, Laminate
Roof type
Composition
Architectural style
Other
Listing Agency: Keller Williams Realty
Listed By: Rhonda L Alderman · License #01292529
Added: Jul 19 Last Checked: Jul 25 at 4:06AM
MLS# 326057838

Copyright © 2026 Bay Area Real Estate Information Services, Inc. All rights reserved. All information provided by the listing agent/broker is deemed reliable but is not guaranteed and should be independently verified.


Investment Insights

Based on property information with market context.

Built in 1927, this triplex offers three 1-bedroom, 1-bath units. Each unit includes a living room, interior laundry, and original hardwood floors. The property also features updated kitchens and bathrooms across the units.

Two units are located on a single-story layout, and Unit 3 is situated at the rear of the property. Unit 3 includes an additional finished room, providing extra flexible space. The property includes accessible features in Unit 3.

Shared amenities include a gravel driveway and a small shared backyard area, along with convenient street parking available through the City’s monthly residential permit program (confirm with the City). Recent improvements include replacement of the Unit 3 roof in 2020.

Key Highlights

  • 1927 vintage triplex with three 1‑bedroom, 1‑bath units
  • Monthly rents of $2,150, $2,100, and $1,950 for the three units
  • Unit 3 at the rear includes an additional finished room and accessible features

Financial Insights For Multifamily LT 5

Simulate Cap Rate and NOI

NOI Build-Up
Vacancy
income lost from leasable area expected to sit empty during the year — subtracted from gross rent.
EGI (Effective Gross Income)
gross rent minus vacancy losses — the realistic income before paying operating costs.
OpEx (Operating Expenses)
recurring costs to operate the property (property tax, insurance, utilities, maintenance, management) — excludes financing and capital improvements.
NOI (Net Operating Income)
income a property generates after operating costs but before financing and taxes.

Component $ $/SF
Gross rent $65.9k $29.40
− Vacancy −$3.6k −$1.62
EGI $62.3k $27.78
− OpEx −$18.7k −$8.33
NOI $43.6k $19.45
2,242 SF · lease $29.40/SF/yr · vacancy 5.50% · expense 30.00%

Alternative Uses

Best Use
Multifamily LT 5
$622.9K
$545.0K – $726.7K (±1% cap)
NOI $43,603 @ 7.0% cap · market cap 5.13%
Second Best
Apartment 5plus
$559.5K
$489.5K – $652.7K (±1% cap)
NOI $39,162 @ 7.0% cap · market cap 4.61%
Theoretical Best
—
—
same as Best Use
Zoning and permitted uses should be independently verified with local authorities.

Property Analytics

Property Profile Location Intelligence

Current Use by Public Records

Sonoma House Buyer Real Estate Agency

Suggested Use

Locksmith (Bike/Boat/Book/etc) Store HVAC Service (Bike/Boat/Book/etc) Store (Bike/Boat/Book/etc) Store Fish Market Electrical Service Carpet & Flooring Store Butcher (Bike/Boat/Book/etc) Store

Zoning and permitted uses should be independently verified with local authorities.

FAQs

What type of property is this?
Triplex - Charming 1927 triplex with three 1-bedroom, 1-bath units, updated kitchens and baths, plus interior laundry in each unit.
Where is this triplex located?
The property is located at 870 3rd Street Santa Rosa, CA.
What is the asking price?
The asking price for this property is $850,000.
What are key features of this property?
This property features: 1927 vintage triplex with three 1‑bedroom, 1‑bath units; Monthly rents of $2,150, $2,100, and $1,950 for the three units; Unit 3 at the rear includes an additional finished room and accessible features
More about this property
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