Duplex with Two-Car
For Sale
$1,185,000
307 Treasure Island, Aptos, CA 95003
Duplex offering two residences, private outdoor space, and an attached two-car garage for off-street parking.
Property Size1,400 SF
Price / SF$846.43
Days on Market162
Property Features for 307 Treasure Island
General Information
Standard status
Active
Size
1,400 SF
Property subtype
Multi Family
Additional Details
Highway Access
Yes
Multifamily Units
2
Taxes and HOA fees
Annual Taxes
$9,461
Building Details
Year Built
1962
Listing Agency:
KW Thrive Santa Cruz
(831) 457-5500
Listed By:
Daniel Chole · License #02031480
(408) 767-8162
Source:
Exitrealty
Added: Apr 1
Changed: Sep 8
Last Checked: Aug 12 at 6:28AM
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 KW Thrive Santa Cruz
Investment Insights
Based on property information with market context.
This duplex includes two separate residences. The upper home is a 2-bedroom, 1-bath layout with vaulted ceilings and a private balcony. The lower 1-bedroom, 1-bath unit includes a separate entrance and private outdoor space.
The property is located on a quiet cul-de-sac and is described as being just steps from the sand. It also provides convenient access to Rio Del Mar and Seacliff beaches, Aptos Village, local restaurants and shops, miles of hiking and biking trails, and Highway 1.
An attached two-car garage supports off-street parking and additional storage, providing practical convenience for both full-time living and rental use.
The property is located on a quiet cul-de-sac and is described as being just steps from the sand. It also provides convenient access to Rio Del Mar and Seacliff beaches, Aptos Village, local restaurants and shops, miles of hiking and biking trails, and Highway 1.
An attached two-car garage supports off-street parking and additional storage, providing practical convenience for both full-time living and rental use.
Key Highlights
- Duplex in Aptos’ Rio Del Mar neighborhood with two residences totaling approx. 1,400 sq ft
- Upper unit: 2‑bedroom, 1‑bath with vaulted ceilings, natural light, and a private balcony
- Lower unit: 1‑bedroom, 1‑bath with separate entrance and private outdoor space
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
$39,032
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
3.29%
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%
$780,640
$780.6K
Cap Rate 7%
$557,600
$557.6K
Cap Rate 9%
$433,689
$433.7K
Market Conditions
NOI Build-Up for 1,400 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
$57.1K $40.80/SF
− Vacancy
−$1.4K −$0.97/SF
EGI
$55.8K $39.83/SF
− OpEx
−$16.7K −$11.95/SF
NOI
$39.0K $27.88/SF
Area
Santa Cruz County, CA
Vacancy
2.38%
Lease Rate
$40.80 /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%
$780,640
Cap Rate 7%
$557,600
Cap Rate 9%
$433,689
Alternative Uses
Best Use
Multifamily LT 5
$557.6K
$487.9K – $650.5K
NOI $39,032 @ 7.0% cap · market cap 3.29%
Second Best
Apartment 5plus
$514.8K
$450.5K – $600.6K
NOI $36,036 @ 7.0% cap · market cap 3.04%
Theoretical Best
Retail
$800.5K
$700.5K – $933.9K
NOI $56,036 @ 7.0% cap · market cap 4.73%
Zoning and permitted uses should be independently verified with authorities.
Property Analytics
Property Profile
Current Use
Lease Details
2
Residential units
Yes
Highway access
Location Intelligence
Trade Area within ½ mile
981
Businesses Nearby
Explore this area
Business Placement
Demographics for 95003, CA
24,706
Population
11,728
Households
2.1
Avg Household Size
50
Median Age
54%
College-Educated
96%
High-School Grad
32.4 sq mi
ZIP Area
763
Density / Sq Mi
$140,990
Median Household Income
$63,609
Median Earnings
$2,548
Median Rent
$1,154,000
Median Home Value
Market
Vacancy Rate% for Multifamily in West region
Questions? Ask Rey
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Frequently Asked Questions
What type of property is this?
Duplex - Duplex offering two residences, private outdoor space, and an attached two-car garage for off-street parking.
Where is this duplex located?
The property is located at 307 Treasure Island Aptos, CA.
What is the asking price?
The asking price for this property is $1,185,000.
What are key features of this property?
This property features: Duplex in Aptos’ Rio Del Mar neighborhood with two residences totaling approx. 1,400 sq ft; Upper unit: 2‑bedroom, 1‑bath with vaulted ceilings, natural light, and a private balcony; Lower unit: 1‑bedroom, 1‑bath with separate entrance and private outdoor space
