NorCal ADU Builders is a California-based full-service ADU contractor handling planning, permits, Title 24 compliance, and construction—including foundation, framing, roofing, plumbing, and interior finishes—for detached ADUs, garage conversions, and backyard cottages.
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SOD Home Group builds attached & detached ADUs, including granny flats, in-law suites, garage conversions & backyard cottages. Licensed ADU contractor (Lic. 942085) helping homeowners expand living space efficiently.
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Bay Area general contractor Design and Construction by M&M specializes in ADUs, remodeling, room additions, and custom builds. Serving Burlingame, Los Altos, and Campbell, they manage design, permitting, and construction. Free consultations available.
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HDR Remodeling is a Bay Area Design Build firm since 1987, specializing in kitchen remodels, bathroom renovations, and home improvements across Oakland, Berkeley, Alameda, and the East Bay, backed by an experienced team of architects and designers.
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Type Five is a Berkeley, CA-based ADU builder offering custom backyard cottages, granny flats & in-law suites. They combine modular design, transparent pricing & streamlined construction for stress-free, high-quality detached ADUs built to last.
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Hamilton Exteriors builds detached ADUs, garage conversions, and JADUs across 6 Bay Area counties. Licensed (CSLB #1078806), insured, and bonded. Projects run 5–9 months with fixed-price contracts. CalHFA grants and $0-down financing available.
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Valley Home Builders Inc. is a Silicon Valley design-build contractor serving Santa Clara & San Mateo Counties. Founded in 2005, they specialize in kitchen remodeling, ADU construction, and home renovations across San Jose, San Mateo & beyond.
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Greenberg Construction builds custom ADUs, including detached units & garage conversions. Services include 3D renderings, dedicated project management, eco-friendly options & expert design guidance to add value & living space to your property.
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Atra Construction is a Bay Area ADU contractor offering full-service design and build. They handle permits, planning, and construction management. Floor plans range from 240 sq ft studios to 1,200 sq ft three-bedroom units.
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Ingenious General Construction is a BBB-certified, licensed contractor in Walnut Creek, CA, serving the East Bay. With 20 years of experience, they offer ADUs, kitchen & bathroom remodeling, home additions, pool construction, and landscaping.
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Alon Design & Remodeling is a leading ADU contractor offering detached, attached, garage conversion, basement, and JADU options. ADUs boost property value, generate rental income, and provide independent living spaces with full amenities.
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New Avenue, Inc is a full-service design-build company serving the San Francisco Bay Area and Portland, OR since 2011. They specialize in ADUs, custom homes, renovations, additions, and Enclaves, managing design, permitting, and construction under one roof.
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Bay Villa Builders brings over 50 years of combined experience in crafting expertly designed ADUs that enhance both your home's functionality and its value. An Accessory Dwelling Unit, or ADU, serves as an additional living space on your property.
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Barcci Builders specializes in ADU construction across the Bay Area, offering design, permitting, and build services. With 40+ completed units, they handle JADUs, garage conversions, attached, and detached ADUs, with costs ranging from $60K to $400K+.
read moreWinnetka is a residential neighborhood located in the West San Fernando Valley region of Los Angeles. Known for its suburban character, single-family homes, and relatively affordable lot sizes compared to other LA neighborhoods, Winnetka presents excellent opportunities for homeowners looking to add an Accessory Dwelling Unit (ADU) to their property. With housing demand continuing to rise across Los Angeles County, experienced ADU contractors in Winnetka are helping local homeowners maximize their property value and generate rental income.
Since Winnetka falls under the jurisdiction of the City of Los Angeles, all ADU projects must comply with the LA Department of Building and Safety (LADBS) regulations. Experienced ADU contractors in Winnetka are well-versed in these local rules, which include:
Given the typical lot sizes and existing home configurations in Winnetka, local ADU contractors frequently work on a variety of project types. The most popular options include:
Hiring a licensed and experienced ADU contractor familiar with Winnetka is critical to a smooth and successful project. Local contractors understand the specific soil conditions, neighborhood aesthetics, and LADBS permitting processes that can affect timelines and costs. They can also help homeowners take advantage of California's ADU amnesty program, which allows unpermitted units to be legalized without penalty in many cases.
A qualified Winnetka ADU contractor will handle everything from architectural design and permit applications to construction and final inspections. With the average ADU in the Los Angeles area adding significant rental income potential — often between $1,500 and $2,500 per month — investing in a professionally built ADU in Winnetka is a smart long-term financial decision for homeowners.