If you’re searching for a reliable ADU contractor in Los Altos, W & W Builders Group provides comprehensive ADU design and construction services tailored to Los Altos zoning regulations, permitting requirements, and inspection standards. From early feasibility analysis through final city approval, we manage every stage of the ADU process to keep your project efficient, organized, and fully compliant.
Whether you’re planning a rental unit, guest house, or additional living space for family, our team builds high-quality ADUs designed to enhance functionality and long-term value for Los Altos homeowners.
Learn more about our full ADU design and construction services.
Los Altos homeowners typically choose from several ADU options depending on property layout, lot size, and project goals.
A detached ADU is a standalone structure built separately from the main residence, often located in the backyard. This option offers maximum privacy and flexibility and is ideal for rental income, independent living, or guest accommodations.
An attached ADU is connected to the primary home and usually constructed as a home addition. This option works well when homeowners want to expand living space while maintaining architectural continuity with the existing structure.
A conversion ADU repurposes an existing garage or interior space into a legal dwelling unit. Conversion ADUs are often the most cost-effective and efficient option because they utilize existing structures and utilities.
Homeowners planning an ADU often explore additional upgrades such as kitchen remodeling in Los Altos, bathroom remodeling, full home remodeling, or home additions to enhance comfort and long-term value.
As an experienced ADU contractor in Los Altos, we follow a structured, step-by-step process designed to keep projects predictable, organized, and fully code-compliant.
We begin with a detailed consultation and site review to evaluate Los Altos zoning requirements, setbacks, lot conditions, access points, and existing site constraints. This phase helps confirm ADU feasibility and identify the best approach for your property.
You receive a detailed proposal outlining the full scope of work, estimated construction timeline, and budget expectations. This step establishes transparency early and helps prevent surprises later in the project.
Our architectural and engineering team develops custom ADU plans tailored to your property while complying with Los Altos building codes and energy requirements. Designs focus on efficient layouts, functionality, and long-term usability.
We manage plan submissions, revisions, and coordination with the City of Los Altos to keep approvals moving efficiently and reduce delays.
We guide you through selecting finishes, fixtures, and materials that align with your design preferences, durability needs, and overall budget—helping define the look and feel of your ADU.
Our project managers oversee all construction phases, subcontractors, inspections, and scheduling to maintain quality, safety, and consistent progress.
We conduct a detailed walkthrough and coordinate final inspections to ensure the ADU meets expectations and complies with all local requirements.
Your ADU is complete, fully approved, and move-in ready—built for comfort, functionality, and long-term value in Los Altos.
Building an ADU in Los Altos requires local knowledge, detailed planning, and precise execution. City-specific zoning rules, setbacks, utility requirements, and inspection processes make it essential to work with a contractor experienced in Los Altos approvals.
As a local ADU contractor, we offer a streamlined design-build approach, allowing design, engineering, permitting, and construction to work together seamlessly.
Extensive experience with Los Altos ADU regulations and permitting
Design-build ADU services under one roof
Full coordination of permits and inspections with the City of Los Altos
Clear scopes of work and transparent pricing
Dedicated project management throughout construction
High-quality craftsmanship built for durability and long-term performance
Homeowners in Los Altos typically have several ADU options depending on lot size, zoning regulations, existing structures, and how the additional space will be used. The most common ADU types allowed in Los Altos include detached ADUs, attached ADUs, and conversion ADUs.
A detached ADU is a standalone structure, usually built in the backyard, offering the highest level of privacy and flexibility. This option is commonly chosen for rental income, independent living, or guest accommodations.
An attached ADU is connected to the primary residence and often built as a home addition. This option works well when homeowners want to expand living space while maintaining architectural continuity with the main house.
A conversion ADU transforms an existing garage or interior space into a legal dwelling unit and is often the fastest and most cost-effective solution when site conditions allow.
As a local ADU contractor in Los Altos, W & W Builders Group evaluates zoning requirements, setbacks, access points, utilities, and site constraints to help homeowners determine which ADU type best fits their property and long-term goals.
The timeline for building an ADU in Los Altos depends on several factors, including the ADU type, design complexity, city review timelines, site conditions, and the overall scope of construction. While every project is unique, most ADU builds follow a phased timeline.
Planning and architectural design typically take several weeks, followed by permitting and approvals that can vary depending on review cycles and required revisions. Construction itself often takes several months based on the size of the ADU and finish level.
In many cases, ADU projects in Los Altos are completed within approximately 6 to 12 months from the initial consultation to final inspection. Working with an experienced local contractor like W & W Builders Group helps keep timelines realistic by coordinating permits, inspections, and construction phases efficiently from start to finish.
The cost of building an ADU in Los Altos depends on multiple variables, including the type of ADU, total square footage, site conditions, utility upgrades, engineering requirements, and finish selections. Because every property is different, pricing can vary significantly based on project scope.
Garage conversion ADUs are often more affordable since they utilize an existing structure and may reduce foundation and framing work.
Attached ADUs typically fall into a mid-range cost category due to structural integration with the main home.
Detached ADUs usually require a higher investment because they involve new foundations, framing, roofing, and full utility connections.
Partnering with an experienced ADU contractor in Los Altos like W & W Builders Group helps homeowners establish accurate budgets early, define a clear scope of work, and minimize unexpected costs during construction.
In many cases, yes. A properly designed and fully permitted ADU can increase property value by adding legal living space and creating flexibility for rental income, multigenerational living, or private guest accommodations.
In Los Altos’ competitive real estate market, ADUs are often viewed as long-term investments when they are thoughtfully designed, built to high standards, and fully compliant with local regulations. Factors such as layout efficiency, construction quality, finishes, and how well the ADU integrates with the primary residence all influence value.
W & W Builders Group focuses on building ADUs that are functional, durable, and well-planned—helping homeowners maximize both day-to-day usability and long-term property value.
Homeowners planning an ADU in Los Altos typically explore several financing options depending on available equity, credit profile, and long-term financial goals. Common options include home equity loans or HELOCs, cash-out refinancing, construction or renovation loans, and personal savings.
Each financing method has different qualification requirements, timelines, and repayment structures depending on the lender. While W & W Builders Group does not provide financing directly, we help homeowners define realistic project scopes and construction budgets so financing discussions with lenders are based on accurate expectations.
The best way to plan an ADU project in Los Altos is to start with a clear understanding of zoning requirements, setbacks, and property limitations. Establishing a realistic budget early and deciding whether you want a detached ADU, attached ADU, or conversion ADU helps guide design decisions, permitting strategy, and overall timelines.
Working with a knowledgeable local ADU contractor in Los Altos like W & W Builders Group is essential. Our team evaluates site conditions, guides architectural and engineering planning, manages permits, and creates a structured construction plan that aligns with Los Altos requirements—helping prevent delays and keep the entire ADU process organized from start to finish.
Many homeowners coordinate ADU construction alongside full home remodeling in Los Altos to improve layout, flow, and overall functionality.
