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Lafayette Duplex with Attached ADU

3692 Sundale Lafayette, CA 94549

3692 Sundale, Lafayette, CA, 94549
$1,675,000
For Sale
Claim this Listing
$1,675,000

MULTI_FAMILY - Lafayette, CA

Property Size3,282 SF
Lot Size0.23 Acres
Price / SF$510.36
AddedMay 28
Days on Market49
Last RefreshJul 15 at 11:06 pm

Property Features for 3692 Sundale

General Information

Property type
Residential Multi Family
Property subtype
Other
Bedrooms
6
Bathrooms
4
Rooms
Bedroom 3, Bedroom 5, Bedroom 2, Bedroom 4, Bathroom 1, Bathroom 4, Bathroom 2, Bathroom 3, Bedroom 6, Bedroom 1
Parking features
Open
Window features
Double Pane Windows
Interior features
Storage
Exterior features
Back Yard
Fireplace
1
Appliances
Dishwasher
Standard status
Active
Size
3,282 SF
Lot size
0.23 Acres

Utilities

Sewer type
Public Sewer
Heating system
Gravity
Cooling system
Window Unit(s), Wall/Window Unit(s), Central Air
Water source
Public

Building Details

Year built
1955
Number of units
2
Flooring type
Laminate, Hardwood
Roof type
Composition
Additional Structures
Storage

Listing agent Jeff Auen License #1244711

Listing office RE/MAX Accord 3390 Mt. Diablo Blvd., Danville, CA

Listing date May 28, 2026

MLS# 41136362 Listing URL

Copyright © 2026 Contra Costa Association of REALTORS®. 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 Lafayette duplex is configured as a townhome-style main unit with an attached ADU rental apartment. The main unit offers 4 bedrooms and 2.5 bathrooms with approximately 2,430 square feet, and the attached ADU provides 2 bedrooms and 1 bathroom at approximately 854 square feet. The property has been cosmetically refreshed with new interior paint, flooring, and inset lighting, and includes hardwood floors in the main unit upper level and throughout the ADU. Bathroom upgrades are noted from 2022 to 2026.

Parking and access include two attached garages accessed from the lower driveway, along with off-street parking with room for up to 8 cars or an RV or boat. The home is located in a quiet neighborhood near the Lafayette Reservoir, with proximity described to downtown and the freeway.

Offered for sale with multiple purchase options, the property can be acquired as a rental property or as a residential townhome setup with the attached ADU generating income. The listing notes that a TIC structure and conversion through condensing both units has been done nearby, subject to city confirmation.

Key Highlights

  • Largest Lafayette duplex setup with 2430 SF main unit plus an attached 854 SF 2 bed/1 bath ADU
  • Cosmetically refreshed with new interior paint, flooring, and inset lights; hardwood flooring in the main unit upper level and throughout the ADU
  • Bathroom upgrades noted from 2022 to 2026

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 $84.7k $25.80
− Vacancy −$4.4k −$1.34
EGI $80.3k $24.46
− OpEx −$24.1k −$7.34
NOI $56.2k $17.12
3,282 SF · lease $25.80/SF/yr · vacancy 5.20% · expense 30.00%

Alternative Uses

Best Use
Multifamily LT 5
$802.7K
$702.4K – $936.5K (±1% cap)
NOI $56,191 @ 7.0% cap · market cap 3.35%
Second Best
Apartment 5plus
$745.3K
$652.2K – $869.5K (±1% cap)
NOI $52,172 @ 7.0% cap · market cap 3.11%
Theoretical Best
Office A
$1.24M
$1.09M – $1.45M (±1% cap)
NOI $86,842 @ 7.0% cap · market cap 5.18%
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

Locksmith (Bike/Boat/Book/etc) Store Catering Service (Bike/Boat/Book/etc) Store Grocery & Convenience Store Garden Center Furniture & Home Goods (Bike/Boat/Book/etc) Store Home Appliance Store Fish Market

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

FAQs

What type of property is this?
Duplex - Duplex includes a larger townhome-style unit plus an attached two-bedroom ADU, with interior updates and two garages.
Where is this duplex located?
The property is located at 3692 Sundale Lafayette, CA.
What is the asking price?
The asking price for this property is $1,675,000.
What are key features of this property?
This property features: Largest Lafayette duplex setup with 2430 SF main unit plus an attached 854 SF 2 bed/1 bath ADU; Cosmetically refreshed with new interior paint, flooring, and inset lights; hardwood flooring in the main unit upper level and throughout the ADU; Bathroom upgrades noted from 2022 to 2026
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