Updated Duplex Homes on One
3675 Christensen Ln, Castro Valley, CA 94546
New
MULTI_FAMILY - Castro Valley, CA
Property size:
2,700 SFLot size:
0.18 AcresPrice / SF:
$462/SF- Added:
- Jun 2, 2026
- Days on Market:
- 2
- Last Refresh:
- Jun 3 at 4:06 am
Property Features for 3675 Christensen Ln
General Information
- Property type
- Residential Multi Family
- Property subtype
- Other
- Bedrooms
- 4
- Bathrooms
- 8
- Rooms
- Bathroom 1, Bedroom 1, Bedroom 4, Bathroom 2, Bathroom 3, Bathroom 6, Bathroom 4, Bathroom 8, Bedroom 3, Bathroom 5, Bathroom 7, Bedroom 2
- Parking features
- Parking Lot, Garage
- Exterior features
- Back Yard, Front Yard, Yard Space
- Fireplace
- 1
- Standard status
- Active
- APN
- 84B531161
- Size
- 2,700 SF
- Lot size
- 0.18 Acres
Utilities
- Sewer type
- Public Sewer
- Heating system
- Wall Furnace
- Cooling system
- Central Air
- Water source
- Public
Building Details
- Year built
- 1947
- Number of units
- 2
- Flooring type
- Carpet, Tile, Engineered, Wood
- Building materials
- Stucco, Wood Siding
- Roof type
- Composition
Listing agent Leslie Foster (510) 397-0696
Listing office EXP Realty of California, Inc 2603 Camino Ramon Ste 200, San Ramon, CA (888) 584-9427
Listing date Jun 2, 2026
MLS# 41136934
Listing URL
Copyright © 2026 Bay East. All rights reserved. All information provided by the listing agent/broker is deemed reliable but is not guaranteed and should be independently verified.
HighLights
- Duplex setup: two homes at 3675 and 3677 Christensen Lane on one expansive lot
- Extensive upgrades reported: new electrical service, new plumbing, new sewer line, and fully renovated interiors
- Central air cooling plus wall furnace heating
- Roof type: composition; exterior includes stucco and wood siding
- Fireplace included; flooring includes carpet, tile, engineered, and wood
- Utilities: public water and public sewer; parking includes a parking lot and a garage
Overview
Welcome to 3675 and 3677 Christensen Lane, offered as a distinctive duplex on one expansive lot. This property features two charming, thoughtfully updated homes with well-designed layouts intended to support comfortable living and entertaining. Both residences have been renovated, blending modern conveniences with timeless appeal.
The location in Castro Valley is positioned for everyday convenience, with easy access to local amenities, shopping, dining, and top-rated schools. The combined setup provides a versatile living arrangement for households that want separate space or for investors looking to manage two homes under one ownership.
With extensive upgrades including new electrical service, new plumbing, a new sewer line, and fully renovated interiors, this duplex is well-suited for buyers seeking a lower-maintenance property with meaningful improvements already completed. Its two-home configuration also offers flexibility for owner-occupants and rental strategies alike, making it an attractive option for those who want both convenience and practical income potential in one package.
The location in Castro Valley is positioned for everyday convenience, with easy access to local amenities, shopping, dining, and top-rated schools. The combined setup provides a versatile living arrangement for households that want separate space or for investors looking to manage two homes under one ownership.
With extensive upgrades including new electrical service, new plumbing, a new sewer line, and fully renovated interiors, this duplex is well-suited for buyers seeking a lower-maintenance property with meaningful improvements already completed. Its two-home configuration also offers flexibility for owner-occupants and rental strategies alike, making it an attractive option for those who want both convenience and practical income potential in one package.
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 | $137.7k | $51.00 |
| − Vacancy | −$8.2k | −$3.05 |
| EGI | $129.5k | $47.95 |
| − OpEx | −$38.8k | −$14.39 |
| NOI | $90.6k | $33.57 |
2,700 SF · lease $51.00/SF/yr · vacancy 5.98% · expense 30.00%
Alternative Uses
Best Use
Multifamily LT 5
$1.29M
$1.13M – $1.51M
NOI $90,626 @ 7.0% cap · market cap 7.26%
Second Best
Apartment 5plus
$558.7K
$488.9K – $651.9K
NOI $39,112 @ 7.0% cap · market cap 3.13%
Theoretical Best
Retail
$12.31M
$10.77M – $14.36M
NOI $861,642 @ 7.0% cap · market cap 68.99%
Zoning and permitted uses should be independently verified with local authorities.
Property Profile
Location Intelligence
Current Use by Public Records
Duplexes
Location Insight
- Map
- Local Demand
- City
- Castro Valley
- County
- Alameda
- State
- California
- Longitude
- -122.084249
- Latitude
- 37.706263
Nearby Similar for Sale
FAQs
What type of property is this?
Duplex - Own two fully renovated residences on one expansive lot with substantial utility and interior upgrades.
Where is this duplex located?
The property is located at 3675 Christensen Ln Castro Valley, CA.
What is the asking price?
The asking price for this property is $1,249,000.
What are key features of this property?
This property features: Duplex setup: two homes at 3675 and 3677 Christensen Lane on one expansive lot; Extensive upgrades reported: new electrical service, new plumbing, new sewer line, and fully renovated interiors; Central air cooling plus wall furnace heating
