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Renovated Duplex With Attached ADU
For Sale
Under Contract
$875,000

1461-1463 Trombetta Street, Santa Rosa, CA 95407

Residential Income, Santa Rosa, CA

Property Size2,969 SF
Lot Size0.11 Acres
Price / SF$294.71
Days on Market33

Property Features for 1461-1463 Trombetta Street

General Information

Property type Residential Multi Family
Property subtype Duplex
Bedrooms 4
Bathrooms 4
Full bathrooms 3
Half bathrooms 1
Rooms Bathroom 2, Bathroom 4, Bedroom 2, Bedroom 3, Bathroom 3, Bedroom 4, Bathroom 1, Bedroom 1
Parking 2
Exterior features Private Yard
Subdivision Stony Ranch
Directions Stony Point to Trombetta Street.
Standard status Active Under Contract
APN 125670005000
Size 2,969 SF
Lot size 0.11 Acres

Utilities

Sewer type Public Sewer
Heating system Central
Cooling system Central Air
Water source Public

Amenities

fireplace
private entrance

Building Details

Year built 2005
Floors in Building 2
Number of units 2
Building materials Stucco, Wood
Roof type Tile
Architectural style Mediterranean, Spanish
Listing Agency: W Real Estate
Listed By: Ruben Guerrero
Added: Jul 22 Changed: Aug 19 Last Checked: Aug 23 at 7:06PM
MLS# 325054973

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.

This Spanish-Mediterranean duplex contains 2,969 square feet on a 0.1088-acre lot. The primary residence offers 3 bedrooms and 3 bathrooms, with renovated flooring, interior paint, ceiling lighting, and a kitchen finished with granite countertops and a glass backsplash. A fireplace anchors the living room, while the attached ADU provides 1 bedroom and 1 bathroom with its own entrance and a full remodel.

Built in 2005, the property includes a private yard, stucco and wood construction, a tile roof, central heating, and central air conditioning. Public water and public sewer serve the property. The duplex is located in Santa Rosa, California, within Sonoma County.

Key Highlights

  • 2,969‑square‑foot duplex on a 0.1088‑acre lot
  • 3‑bedroom, 3‑bathroom primary residence
  • Remodeled 1‑bedroom, 1‑bathroom attached ADU with private entrance

Financial Insights

Estimated NOI and Cap Rate

NOI = area × lease_rate × (100 − vacancy) / 100 × (1 − expense_ratio). Net Operating Income — what the owner takes home each year before mortgage payments and income tax. Effective rent (asking rent minus vacancy losses) minus operating costs (taxes, insurance, maintenance, management).
NOI / Yr
$57,741
Cap rate = NOI / list price × 100. Capitalization rate — annual return on a fully cash purchase, before financing. NOI divided by price. Higher means more income per dollar invested, but usually also more risk or older condition. 5–8% is typical for stabilized commercial property; double digits often signal distressed deals.
Cap Rate
6.60%
Suggested Prices Based on Cap Rates Cap rates vary significantly by property type, market, and asset quality. Typical U.S. stable-market ranges: Multifamily — 4.5% to 6.5% (Class A in primary markets often sub-5%; Class C in secondary markets 6%+) Industrial / Logistics — 5.0% to 7.0% (compressed heavily in recent years due to e-commerce demand) Office — 6.5% to 9%+ (wide spread post-2020; CBD Class A vs. suburban Class B varies dramatically) Retail — 5.5% to 8.5% (grocery-anchored on the low end, unanchored strip centers higher) Hospitality / Hotels — 7.5% to 10%+ (higher due to operational risk) Self-Storage — 5.5% to 7.5% Medical Office — 6.0% to 7.5% Net Lease (single tenant, credit) — 5.0% to 7.0% depending on tenant credit and lease term Rules of thumb: Primary markets (NYC, SF, LA, Boston, DC) trade at lower cap rates than secondary/tertiary markets, often by 100–200 bps (bps, aka basis points; 1 bp = 0.01%). Class A assets trade ~50–150 bps tighter than Class B, and Class B tighter than Class C. Cap rates move inversely with price — a lower cap rate means a higher price for the same NOI. Spread to the 10-year Treasury is a common benchmark; historically 200–400 bps over the 10-year.
Cap Rate 5%
$1,154,820 $1.2M
Cap Rate 7%
$824,871 $824.9K
Cap Rate 9%
$641,567 $641.6K
Market Conditions
NOI Build-Up for 2,969 SF 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.
Gross rent
$87.3K $29.40/SF
− Vacancy
−$4.8K −$1.62/SF
EGI
$82.5K $27.78/SF
− OpEx
−$24.7K −$8.33/SF
NOI
$57.7K $19.45/SF
Area
Santa Rosa, CA
Vacancy
5.50%
Lease Rate
$29.40 /SF/Yr
Expense Ratio
30.00%
Simulate Cap Rate and NOI
Suggested Prices Based on Cap Rates Cap rates vary significantly by property type, market, and asset quality. Typical U.S. stable-market ranges: Multifamily — 4.5% to 6.5% (Class A in primary markets often sub-5%; Class C in secondary markets 6%+) Industrial / Logistics — 5.0% to 7.0% (compressed heavily in recent years due to e-commerce demand) Office — 6.5% to 9%+ (wide spread post-2020; CBD Class A vs. suburban Class B varies dramatically) Retail — 5.5% to 8.5% (grocery-anchored on the low end, unanchored strip centers higher) Hospitality / Hotels — 7.5% to 10%+ (higher due to operational risk) Self-Storage — 5.5% to 7.5% Medical Office — 6.0% to 7.5% Net Lease (single tenant, credit) — 5.0% to 7.0% depending on tenant credit and lease term Rules of thumb: Primary markets (NYC, SF, LA, Boston, DC) trade at lower cap rates than secondary/tertiary markets, often by 100–200 bps (bps, aka basis points; 1 bp = 0.01%). Class A assets trade ~50–150 bps tighter than Class B, and Class B tighter than Class C. Cap rates move inversely with price — a lower cap rate means a higher price for the same NOI. Spread to the 10-year Treasury is a common benchmark; historically 200–400 bps over the 10-year.
Cap Rate 5%
$1,154,820
Cap Rate 7%
$824,871
Cap Rate 9%
$641,567

Alternative Uses

Best Use
Multifamily LT 5
$824.9K
$721.8K – $962.4K (±1% cap)
NOI $57,741 @ 7.0% cap · market cap 6.60%
Second Best
Apartment 5plus
$740.9K
$648.3K – $864.3K (±1% cap)
NOI $51,860 @ 7.0% cap · market cap 5.93%
Theoretical Best
same as Best Use
Zoning and permitted uses should be independently verified with authorities.

Property Analytics

Current Use

Duplexes

Suggested Use

Top Pick Law Firm Real Estate Agency Dental Office Bakery Spa & Massage Center Gym & Fitness Center

Score = modeled unmet demand for each use within ~1 mi (higher = bigger opportunity). Zoning and permitted uses should be independently verified with local authorities.

Lease Details

2
Residential units

Location Intelligence

Trade Area within ½ mile

241
Businesses Nearby

Demographics for 95407, CA

42,504
Population
13,371
Households
3.2
Avg Household Size
34
Median Age
17%
College-Educated
73%
High-School Grad
21.6 sq mi
ZIP Area
1,968
Density / Sq Mi
$82,807
Median Household Income
$40,907
Median Earnings
$1,822
Median Rent
$603,300
Median Home Value

Market

Vacancy Rate% for Multifamily in West region

7% 2022
7.8% 2023
8.6% 2024
8.6% 2025
Rey
Questions? Ask Rey
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Frequently Asked Questions

What type of property is this?
Duplex - Spanish-Mediterranean duplex with a private-entry accessory dwelling unit, updated interiors, and central heating and air conditioning.
Where is this duplex located?
The property is located at 1461-1463 Trombetta Street Santa Rosa, CA.
What is the asking price?
The asking price for this property is $875,000.
What are key features of this property?
This property features: 2,969‑square‑foot duplex on a 0.1088‑acre lot; 3‑bedroom, 3‑bathroom primary residence; Remodeled 1‑bedroom, 1‑bathroom attached ADU with private entrance
More about this property
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