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Duplex with Two Separate Residences

307 Treasure Island Aptos, CA 95003

307 Treasure Island, Aptos, CA, 95003
$1,185,000
For Sale
Claim this Listing
$1,185,000

MULTI_FAMILY - APTOS, CA

Property Size1,400 SF
Lot Size0.07 Acres
Price / SF$846.43
AddedJun 23
Days on Market24
Last RefreshJul 16 at 10:06 am

Property Features for 307 Treasure Island

General Information

Property type
Residential Multi Family
Property subtype
Other
Zoning
R-1-3.5
Bedrooms
3
Rooms
Bedroom 1, Bedroom 2, Bedroom 3
Parking
3
Parking features
Garage - Attached
Interior features
Vaulted Ceiling
Standard status
Active
Size
1,400 SF
Lot size
0.07 Acres

Utilities

Heating system
Wall Furnace
Water source
Public

Building Details

Year built
1962
Number of units
2
Flooring type
Linoleum, Carpet, Laminate
Roof type
Composition

Listing agent Daniel Chole License #02031480

Listing office KW Thrive Santa Cruz 1360-A 41st ave., Santa Cruz, CA

Listing date Jun 23, 2026

MLS# ML82037376 Listing URL

Copyright © 2026 MLS Listings, 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 duplex includes two residences totaling approximately 1,400 square feet. The upper home is a 2-bedroom, 1-bath layout with vaulted ceilings and a private balcony. The lower unit is a 1-bedroom, 1-bath configuration with a separate entrance and private outdoor space. An attached two-car garage provides off-street parking and additional storage. Zoning is R-1-3.5.

Located on a quiet cul-de-sac in Aptos’ Rio Del Mar neighborhood, the property is described as being steps from the sand. Access is convenient to Rio Del Mar and Seacliff beaches, Aptos Village, local restaurants and shops, and miles of hiking and biking trails, with Highway 1 access.

The configuration supports flexible occupancy, including living in one unit while renting the other, or using the separate entrances to accommodate extended-family needs.

Key Highlights

  • Duplex in Rio Del Mar on a quiet cul‑de‑sac, close to sand at 307 Treasure Island Dr
  • Two residences totaling approx. 1,400 sq ft: upper 2‑bed/1‑bath and lower 1‑bed/1‑bath
  • Upper unit features vaulted ceilings and a private balcony

Local 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 $57.1k $40.80
− Vacancy −$1.4k −$0.97
EGI $55.8k $39.83
− OpEx −$16.7k −$11.95
NOI $39.0k $27.88
1,400 SF · lease $40.80/SF/yr · vacancy 2.38% · expense 30.00%

Alternative Uses

Best Use
Multifamily LT 5
$557.6K
$487.9K – $650.5K (±1% cap)
NOI $39,032 @ 7.0% cap · market cap 3.29%
Second Best
Apartment 5plus
$514.8K
$450.5K – $600.6K (±1% cap)
NOI $36,036 @ 7.0% cap · market cap 3.04%
Theoretical Best
Retail
$800.5K
$700.5K – $933.9K (±1% cap)
NOI $56,036 @ 7.0% cap · market cap 4.73%
Zoning and permitted uses should be independently verified with local authorities.

Property Analytics

Property Profile Location Intelligence

Current Use by Public Records

Duplexes

Suggested Use

HVAC Service Barber Shop Parking Lot & Garage Daycare Center Furniture & Home Goods (Bike/Boat/Book/etc) Store (Bike/Boat/Book/etc) Store (Bike/Boat/Book/etc) Store (Bike/Boat/Book/etc) Store (Bike/Boat/Book/etc) Store

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

FAQs

What type of property is this?
Duplex - Duplex offers two residences with separate entrances 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 Rio Del Mar on a quiet cul‑de‑sac, close to sand at 307 Treasure Island Dr; Two residences totaling approx. 1,400 sq ft: upper 2‑bed/1‑bath and lower 1‑bed/1‑bath; Upper unit features vaulted ceilings and a private balcony
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