Fold House is a striking new construction residence by award-winning women-led architect duo Artifact Collaborative, set dramatically in the lower Berkeley Hills. West-facing windows and doors frame sweeping 180-degree views of San Francisco and the Golden Gate Bridge. The home’s name reflects its defining design concept—interlocking planes and articulated volumes—expressed through sculptural two-story floating staircases and a distinctive folded roofline. A triangulated clerestory window draws in abundant natural light throughout the interiors. Thoughtfully designed to inspire and endure, Fold House offers a forward-thinking, all-electric lifestyle with solar PV and battery, high-efficiency heat pumps, EV charging, seismic-resistant foundations, and fire-hardened construction with standing seam metal roofing, plaster exterior, and a full fire sprinkler system. A rare architectural offering where form and function exist in perfect balance. With panoramic vistas and light-filled interiors, every day feels extraordinary. This is Berkeley Hills living at its very best.
Single-familyProperty Type
2025Year Built
5,936 sq ftLot Size
$1,339Price/Sq.Ft.
1 car garageParking
Listed by Scott Leverette•DRE #01371899• Golden Gate Sothebys Intl Rlty
Est. $5,068 per month, based on comparable rentals
Sale and tax history for 1136 Keith Ave
Sale History
Tax History
Date
Event
Price
bridgeMLS, Bay East AOR, or Contra Costa AOR #41124093
Mar 20, 2026
Sold
$4,200,000
$1,339/sq ft
Feb 25, 2026
Pending
—
Feb 18, 2026
Listed
$3,495,000
$1,114/sq ft
bridgeMLS, Bay East AOR, or Contra Costa AOR #41116050
Dec 23, 2025
Listing Removed
—
Nov 18, 2025
Price Changed
*
Oct 29, 2025
Listed
*
bridgeMLS, Bay East AOR, or Contra Costa AOR #40963466
Sep 23, 2021
Sold
$880,000
$281/sq ft
Sep 8, 2021
Pending
—
Aug 17, 2021
Listed
$825,000
$263/sq ft
Commanding Views Across Berkeley Encompassing The Bay Bridge, Treasure Island, San Francisco, and The Golden Gate Bridge to Mt. Tamalpias. The home needs considerable remodeling and major renovations to make it habitable. Buyer should have extensive experience in restoration. First time on market in more than 50 years.
Year
Property tax
Land + Additions
Assessment*
2025
$15,973 (+9.9%)
$420,235 + $513,620
$933,855
2024
$14,531 (+2.1%)
$420,235 + $513,620
$933,855
2023
$14,226 (+1.9%)
$411,998 + $503,553
$915,551
2022
$13,965 (+210.4%)
$396,000 + $484,000
$880,000
2021
$4,500 (+10.0%)
$396,000 + $484,000
$880,000
2020
$4,089 (+9.4%)
$64,965 + $27,756
$92,721
2019
$3,737 (+3.2%)
$64,299 + $27,471
$91,770
2018
$3,621 (+4.6%)
$63,038 + $26,933
$89,971
2017
$3,461 (+7.8%)
$60,590 + $25,887
$86,477
2016
$3,210 (+2.2%)
$60,590 + $25,887
$86,477
2015
$3,141 (+4.2%)
$59,402 + $25,379
$84,781
2014
$3,013 (+2.1%)
$57,364 + $24,509
$81,873
2013
$2,951 (+3.2%)
$57,364 + $24,509
$81,873
2012
$2,860 (+3.9%)
$57,105 + $24,398
$81,503
2011
$2,752 (+0.3%)
$55,985 + $23,920
$79,905
2010
$2,745 (+0.5%)
$54,888 + $23,451
$78,339
2009
$2,731 (+9.6%)
$54,478 + $23,275
$77,753
2008
$2,493
$54,607 + $23,331
$77,938
Public record
Public record
Zoning
Permits
Beds
4
Baths
3.5
Stories
3
Lot width
—
Lot depth
—
Lot size
5,936
Year renovated
1924
Sq. Ft.
3,136
Year built
2025
Style
Single Family Residential
County
Alameda County
APN
063 298803800
Parking Spaces
1
Basement
No
Accessible
No
HOA Dues
—
Garage
Yes
Features
Views, Green
Last updated by owner on Apr 10, 2026.
R-1H
H
Single Family Residential District - Hillside Overlay Zone
The purpose of the Single-Family Residential (R-1) district is to: Recognize and protect the existing pattern of development in the low-density, single-family residential areas of the city consistent with the General Plan; Make housing available for persons who desire detached housing and a relatively large amount of usable open space; Protect adjacent properties from unreasonable obstruction of light and air; and Permit community facilities such as religious assembly uses, schools, parks, and libraries which serve the local population and are not detrimental to the immediate neighborhood.; The purpose of the Hillside (H) overlay zone is to: implement General Plan policies for hillside development; protect the safety and health of residents where steep topography, unusual street conditions and proximity to the wildland-urban interface create severe risk from wildfire; protect the character of Berkeley's hillside areas and their immediate environs; give reasonable protection to views yet allow appropriate development of all property; and allow modifications in standard setback and height requirements when justified because of steep topography, irregular lot pattern, unusual street conditions, or other special aspects of the hillside areas.
Zone overlays
Hillside Overlay Zone
Nov 10, 2025 • Final
Plan check
Convert the third floor into a split-level layout and redesign the roof deck to accommodate a future hot tub. Reconfigure the interior stairs on the second floor and update Title 24 energy compliance documentation.
Addition
Remodel
Aug 20, 2025 • Final
Plan check
Grading
Permit history is from public records and may be incomplete or inaccurate. Redfin and its agents make no representations about the property condition or permit status. Buyers should independently verify all information.
Property details
Parking
Parking Information
Garage Spaces: 1
Covered Spaces: 1
Parking Features: Attached, Int Access From Garage, Garage Door Opener
Property information provided by bridgeMLS, Bay East AOR, or Contra Costa AOR when last listed in 2026. This data may not show owner updates. Learn more.