14 photos · MLS data verified October 9, 2026 · Updated every 15 min
$1,350,000
Active
0 Beds·0 Baths·0 sqft·27,007 sqft lot·Built N/A
3659 Happy Valley, Lafayette, CA 94549
Listed 11 days ago · | MLS# ML82062390
$0/sqft
3659 Happy Valley is a home in Lafayette 94549. It is listed at $1,350,000.
Est. $8,673/moP&I $7,005 · Tax $1,406 · Insurance $262 · HOA $0Assumes 20% down ($270,000) at 6.75% · Contact Timothy for a lender referralAegis Luxury Real Estate is a licensed California real estate brokerage (DRE# 01328224) and is not a mortgage lender, mortgage broker, or loan originator. The figures shown are estimates for general reference only and do not constitute a loan offer, pre-approval, pre-qualification, or commitment to lend. Estimates use a property tax rate of 1.25% of home price annually. Actual rates, payments, taxes, and insurance vary by lender and borrower qualifications. Contact Timothy for a referral to one of our preferred lending partners.
1Active in Lafayette
2.4 moInventory
About 3659 Happy Valley
Views, privacy, space, top-rated schools and walking distance to downtown Lafayette and BART need we say more? A rare opportunity in the heart of Lafayettes highly desirable Happy Valley! Privately tucked away along a private road shared by only three residences, this special property offers beautiful views across Happy Valley, mature trees and a relatively level building area ready for your vision. Previously developed lot with a new driveway, water and electricity already in place. Plans for an approx. 3,831 SF two-story residence with 2-car garage were previously approved by the City of Lafayette and a building permit was obtained. While approvals have expired, the existing plans, engineering and extensive groundwork may provide a significant head start. Architect and builder familiar with the project may also be available to assist. Build an incredible custom residence and explore the potential for an ADU, pool, gardens, pickleball/tennis court and exceptional indoor-outdoor living. An exciting opportunity for homeowners, builders or investors in an area where newly built luxury homes have sold above $4M. Easy access to Hwy 24 and San Francisco. Seller financing may be available. Bring your vision and create something truly special in Happy Valley!
MLS ID #ML82062390, Marcela Simonkova. Listing provided by David Lyng Real Estate · MLSListings Inc.
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Property Details for 3659 Happy Valley
Overview
- Property Type
- ResidentialLot
- Bathrooms
- 0 Full
- Lot Size
- 27,007 sqft (0.62 acres)
- Status
- Active
Exterior and Parking
- View
- Hills, Valley
- Lot Features
- Grade sloped up, Grade varies
- Fencing
- Partial fencing
- Zoning
- R-40
Community and HOA
- Utilities
- Public, Water public
- County
- Contra Costa
- City
- Lafayette
Schools
- School District
- Lafayette Elementary
- Lafayette Schools
- View Lafayette schools
Listing
- MLS Number
- ML82062390
- Listed
- September 28, 2026
- Days on Market
- 11
- Listing Agent
- Marcela Simonkova
- Listing Brokerage
- David Lyng Real Estate
- Data Verified
- October 9, 2026
Source: MLSListings Inc. School attendance boundaries are set by the district and can change; verify directly with the district.
Free from Aegis · Updated for October 2026
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📄Lafayette Market ReportFree 9-page PDF with bedroom breakdowns, comp data and pricing trends, updated monthly.Email Me the Report →📋Lafayette Buyer BriefA personalized brief with comp data, offer strategy and neighborhood context.Email Me the Report →🎯Lafayette Offer StrategyComp analysis and bid recommendations before you write an offer on this home.Email Me the Report →
Location
3659 Happy Valley, Lafayette, CA 94549 · Contra Costa County
Market Context
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Get My Offer Range →Frequently Asked Questions
Listed at $1,350,000.
Listed September 28, 2026. That is 11 days on market as of October 9, 2026.
Est. $8,673/mo with 20% down ($270,000) at 6.75%. That is principal and interest $7,005, property tax $1,406 and insurance $262. The assumptions and lender disclosure are with the payment estimate at the top of this page.
There are 1 active listings in Lafayette.
Yes. As of October 9, 2026, 3659 Happy Valley is an active listing at $1,350,000.
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Timothy Alston
Broker · DRE# 01328224 · Over 23 Years Experience
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Listed 11 days ago.
Questions
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Timothy Alston, Broker, DRE# 01328224. Over 23 years in Silicon Valley real estate.
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