This unique Lafayette duplex is best suited as a “townhome” plus attached ADU and is the largest duplex in Lafayette with 4 bedrooms/2.5 bath: 2430 sq.ft main unit and an attached 2 bed- 1 bath duplex /ADU rental apt (854 sq.ft). Located in Sunset Village near the Lafayette Reservoir. Cosmetically refreshed with new interior paint, flooring, inset lights etc; bathroom upgrades (2) (from 2022 to 2026) Hardwood floors in main unit upper level and throughout ADU. 2 attached garages on the lower driveway, off street parking with overall room for 8 cars or RV or boat. Located in a quiet neighborhood- minutes to downtown, the freeway & Lafayette Reservoir. Purchase options: 1. Rental property with turnkey rentals; 2. Purchase as single family residential Townhome and rent apt for income 3. Purchase as single family residential home/Townhome and use ADU for home office /write off or extended family use or possible short term rental 4. Purchase with friend or family member as TIC and split value by condizing both units (check with city-has been done nearby) Open this Sat and Sunday 2-4 pm May 26/27 and June 6/7.
Mountain View, located between Mount Diablo Boulevard and the Lafayette Reservoir, is a residential and hillside Lafayette neighborhood with winding lanes and broad valley views. The neighborhood’s character concentrates around the Lafayette Reservoir Rim Trail entrance at Mt. Diablo Blvd and Moraga Rd, where joggers, dog-walkers, and cyclists set the daily tempo. Mid-century ranch homes and updated contemporaries share the slopes, with mature oaks and terraced yards shaping the streetscape. A short drive away, the Park Theater anchors local culture with an indie-leaning marquee. Diablo Foods and the Lafayette Library and Learning Center serve as community pillars for cooking, reading, and low-key gatherings. The landscape shifts from shaded reservoir paths to open ridgelines, giving the area a calm, outdoors-forward rhythm.
Provided by Walk Score and Local Logic
Offer insights
3692 Sundale · $1,595,000
$1.58M and above
75% chance or better to win
Why $1.58M+ is a strong offer
DAYS ON MARKET
90 days
The average home goes pending in 67 days.
SALE-TO-LIST
100.0%
Most homes are selling 0% below list price.
About offer insights
Property details
Interior
Exterior
Finance
Kitchen
Bathroom
Bedroom
Living
Interior features
Storage
Double pane windows
Fireplace
Bathrooms
Unit 1: 1 bathroom
Unit 2: 2.5 bathrooms
Kitchen
Unit 1 dining room
Unit 2 dining room
Laundry & utility
Laundry in basement
Laundry closet
Separate electric and gas meters
Flooring
Hardwood
Laminate
Heating & cooling
Gravity heating
Central air
Wall/window unit air conditioning
Exterior features
Back yard
Corner lot
Home design
Duplex (residential income)
Built in 1955
Parking
Total 8 parking spaces
Attached garage with garage door opener
Unit 1 assigned 4 parking spaces
Unit 2 assigned 4 parking spaces
Utilities
Public water
Public sewer
Financial info
Two-unit property
Electricity and solar
View estimated energy costs and solar savings for this home
bridgeMLS, Bay East AOR, or Contra Costa AOR #41136362
Aug 13, 2026
Price Changed
$1,595,000
$486/sq ft
May 28, 2026
Listed
$1,675,000
$510/sq ft
As the MLS and public records start to fill up, we'll list the details here.
Public record
Public record
Zoning
Beds
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Stories
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Lot width
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Lot depth
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Lot size
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Year renovated
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Finished Sq. Ft.
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Unfinished Sq. Ft.
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Total Sq. Ft.
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Year built
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Style
Multi-Family (2-4 Unit)
County
Contra Costa County
APN
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Parking Spaces
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Basement
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Accessible
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HOA Dues
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Garage
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Last updated by owner on May 28, 2026.
D-1
Two Family Residential District
The purpose of this article is to provide a two-family residential district, and regulations therefor, in areas close to the central area and major transportation services; to enhance the semirural residential character of the city; to ensure attractive and compatible architectural treatment of structures; and to encourage quality development consistent with the goals and policies and other provisions of the general plan.
Permitted uses
Include but are not limited to:
Housing-Single unit
Housing-Multiple units
Climate risks
1/10 Flood Factor
Minimal risk of a flood reaching the building in the next 30 years
3/10 Fire Factor
0.62% chance of being in a wildfire in next 30 years
3/10 Heat Factor
7 days above 93° expected this year, 16 days in 30 years
1/10 Wind Factor
Minimal risk of severe winds over next 30 years
8/10 Air Factor
15 unhealthy days expected this year, 16 days in 30 years
Provided by First Street
Historical weather
Lafayette, CA • 94549
Average low and high temperatures (°F)
60
43
62
46
70
50
68
49
75
52
78
54
79
55
87
58
84
59
77
56
63
48
57
45
Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec
Sun exposure
72/ 100
Good sunlight
Sunscore
There appears to be minimal shading by surrounding buildings, terrain, and vegetation.
9.3 hrs
4.5 hrs
JuneDecember
Provided by Shadowmap
Redfin Estimate for 3692 Sundale
$1,537,169
$58K under list price of $1.60M
Nearby comparable homes
The Redfin Estimate uses 6 recent nearby sales, priced between $1.7M to $2.6M.