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Triplex with Finished Basement
For Sale
$899,000

684 18th Street, Oakland, CA 94612

Three-unit property with varied bedroom counts and additional lower-level kitchen and living space.

Property Size2,094 SF
Days on Market23

Property Features for 684 18th Street

General Information

Standard status Active
Size 2,094 SF
Property subtype Triplex

Building Details

Building Size 2,094 SF
Year Built 1895
Listing Agency: BHG RE Reliance Partners
Listed By: Ting Yu Zhu · License #01461761
Source: Coastandcore
Added: Aug 10 Changed: Aug 28 Last Checked: Aug 30 at 11:32PM

Displayed information is deemed reliable but is not guaranteed and should be independently verified. All listing content including descriptions, pricing, images are the copyrighted material of BHG RE Reliance Partners

Investment Insights

Based on property information with market context.

Built in 1895, this Oakland triplex combines three residential units with a finished basement. Unit A contains 3 bedrooms and 1 bath, while Units B and C each offer 1 bedroom and 1 bath. The basement adds 2 bedrooms, 1 bath, a kitchen, and a living area. County records identify the property as a triplex, and the building is served by one PG&E meter.

The property is within walking distance of Oakland City Hall, the State Building, Uptown Oakland, BART, restaurants, shopping, and downtown amenities. A long driveway and flat backyard provide additional parking potential. Basement improvements, square footage, unit configuration, permits, ADU potential, and permitted use require buyer investigation and verification.

Key Highlights

  • Three‑unit property with 5 total bedrooms and 3 baths across the recorded triplex configuration
  • Unit mix includes one 3‑bedroom/1‑bath unit and two 1‑bedroom/1‑bath units
  • Finished basement includes 2 bedrooms, 1 bath, kitchen, and living area

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
$47,990
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
5.34%
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%
$959,800 $959.8K
Cap Rate 7%
$685,571 $685.6K
Cap Rate 9%
$533,222 $533.2K
Market Conditions
NOI Build-Up for 2,094 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
$71.6K $34.20/SF
− Vacancy
−$3.1K −$1.46/SF
EGI
$68.6K $32.74/SF
− OpEx
−$20.6K −$9.82/SF
NOI
$48.0K $22.92/SF
Area
Oakland, CA
Vacancy
4.27%
Lease Rate
$34.20 /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%
$959,800
Cap Rate 7%
$685,571
Cap Rate 9%
$533,222

Alternative Uses

Best Use
Multifamily LT 5
$685.6K
$599.9K – $799.8K (±1% cap)
NOI $47,990 @ 7.0% cap · market cap 5.34%
Second Best
Apartment 5plus
$631.6K
$552.7K – $736.9K (±1% cap)
NOI $44,215 @ 7.0% cap · market cap 4.92%
Theoretical Best
same as Best Use
Zoning and permitted uses should be independently verified with authorities.

Property Analytics

Current Use

Triplexes

Suggested Use

Top Pick Pet Grooming Service Veterinary Clinic (Bike/Boat/Book/etc) Store Clothing & Fashion Store Restaurant Tanning Salon

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

Location Intelligence

Trade Area within ½ mile

8,508
Businesses Nearby

Demographics for 94612, CA

19,773
Population
11,928
Households
1.7
Avg Household Size
38
Median Age
54%
College-Educated
87%
High-School Grad
1.0 sq mi
ZIP Area
19,773
Density / Sq Mi
$77,069
Median Household Income
$70,221
Median Earnings
$1,936
Median Rent
$814,000
Median Home Value

Market

Vacancy Rate% for Multifamily in West region

7% 2022
7.8% 2023
8.6% 2024
8.6% 2025
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Frequently Asked Questions

What type of property is this?
Triplex - Three-unit property with varied bedroom counts and additional lower-level kitchen and living space.
Where is this triplex located?
The property is located at 684 18th Street Oakland, CA.
What is the asking price?
The asking price for this property is $899,000.
What are key features of this property?
This property features: Three‑unit property with 5 total bedrooms and 3 baths across the recorded triplex configuration; Unit mix includes one 3‑bedroom/1‑bath unit and two 1‑bedroom/1‑bath units; Finished basement includes 2 bedrooms, 1 bath, kitchen, and living area
More about this property
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