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Leff Construction Design/Build

Leff Construction Design/Build

Average rating: 4.9 out of 5 stars27 Reviews
Design-Build Firms
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About Us

LEFF Design Build - Celebrating **44 Years** in Sonoma County. Founded in 1978 by David Leff, the company established itself as an early adopter of green and sustainable building processes when it built the first solar multi-family project in Cotati, California. During the 1980’s, David and his father Irwin Leff continued to develop and build environmentally responsible and resource-efficient residential subdivisions. At the same time, they began to increase their focus on building and remodeling for local homeowners. This re-direction brought with it a new set of challenges: how to help clients discover the underlying problems with their home and then design and build a beautiful and functional solution in the most time-efficient, cost-effective and stress-free manner. Meeting this challenge over many years is what has formed the Leff Design Build process and defined their core mission: to make every project a superior client experience. With a ‘one-point-of-contact’ approach, all points of communication and responsibility rest with the Leff team of architects, designers, estimators, project managers and field crew. The team welcomes every client and includes them as an essential element of the process. Communication and accountability between all parties is transparent and consistent. The result: a custom project delivered on time and on budget, and very happy clients. Decades later, Leff Construction Design Build enjoys its nationally recognized reputation for award-winning, whole-home remodeling and new home projects. From historic restorations that preserve existing materials, to new home designs that achieve zero-net energy, LEFF continues to integrate sustainable principals with new technologies that produce beautiful, functional homes that perfectly reflect their owner’s lifestyles.

Services Provided

3D Rendering, Architectural Design, Architectural Drawings, Bathroom Design, Bathroom Remodeling, Building Design, Custom Homes, Deck Building, Energy-Efficient Homes, Garage Building, Green Building, Historic Building Conservation, Home Additions, Home Extensions, Home Remodeling, House Plans, Kitchen Design, Kitchen Remodeling, New Home Construction, Outdoor Kitchen Construction, Porch Design & Construction, Site Planning, Structural Engineering, Sunroom Design & Construction, Sustainable Design, Universal Design, Construction Drawings, Custom Cabinets

Areas Served

Bloomfield, Bodega, Camp Meeker, Cotati, Dillon Beach, Duncans Mills, Forestville, Fulton, Graton, Guerneville, Larkfield-Wikiup, Monte Rio, Occidental, Penngrove, Petaluma, Rohnert Park, Roseland, Santa Rosa, Sebastopol, Valley Ford, Villa Grande, Kenwood, Oakmont, Glen Ellen, Bennett Valley, Healdsburg, Windsor, Bodega Bay, Tomales


2017 NARI "Remmie" Award-1st Place: Whole House Remodel over $500K; 2017 NARI "Remmie" Award-1st Place: Best Whole House Remodel over $1M; 2017 GuildMaster w/Distinction Award; Remodeling's Big 50; SFBA NARI 2011 and 2013 Remmies 1st place; Design+Build 2012 Design Excellence Award.


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27 Projects

Mid-sized trendy great room photo in San Francisco

New Custom Fire Rebuild in Santa Rosa California

Example of a large trendy beige house exterior design in San Francisco

Sonoma County Oakmont Fire Rebuild

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Business Details

Business Name

Leff Construction Design/Build

Phone Number

(707) 823-4899


6791 Sebastopol Avenue
Suite 140
Sebastopol, CA 95472

Typical Job Cost

$200,000 - 5,000,000

LEFF offers an alternative to the traditional design-bid-build project delivery method (with separate entities, separate contracts, separate work). Instead, the LEFF Design Build Team works under a single contract with you to provide superior design and construction services. We design to your budget. Design Build is proven a more time efficient, cost effective and accountable process.

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