Want to expand your living space and increase your property’s value in Mountain View, CA without the stress of moving? A custom home addition is a smart, long-term solution. At W & W Builders Group, we are a trusted Mountain View home addition contractor, specializing in high-quality design-build additions that enhance both functionality and resale value.
Whether you’re planning a kitchen expansion, a new bedroom, a family room addition, or a full second-story build, our experienced team delivers seamless results tailored to Mountain View homes, zoning requirements, and permitting standards.
Want to expand your living space and boost your property’s value without the stress of moving? A home addition is the perfect solution! At W&W Builders Group, a top home addition contractor, we specialize in turning your vision into reality. Whether it’s a modern kitchen, a welcoming family room, or an entire second floor, our skilled team ensures your home looks and feels exactly the way you’ve always dreamed and then some!
Strong communication is the foundation of every successful home addition. We begin by learning about your goals and conducting a detailed walkthrough of your home to understand the space.
Your project manager will prepare a comprehensive proposal that outlines the scope of work, projected costs, and schedule. This ensures clarity and alignment before moving forward.
Our survey team will take precise measurements, allowing our architect and structural engineer to draft detailed plans. These drawings will illustrate both current and proposed layouts for your review and eventual city submission.
While permits are being processed, we’ll collaborate on design choices, explore showrooms together, and guide you in selecting materials and fixtures that bring your vision to life.
Once permits are secured, we’ll carefully frame your addition to integrate seamlessly with your existing home, followed by the full construction phase.
Our crew will add essential systems—such as electrical, plumbing, or HVAC—so your expanded space is fully functional and up to modern standards.
We’ll complete the project with finishing details, including fixture installation, painting, and all the fine work that elevates your space.
To wrap up, we’ll perform touch-ups and ensure everything passes inspection, delivering a finished addition that meets regulations and exceeds expectations.
Before planning a home addition in Mountain View, it’s essential to review city-specific zoning rules, setback requirements, floor area ratio (FAR) limits, height restrictions, and potential structural constraints. These regulations directly shape what can be built and have a major impact on the approval timeline and overall project cost.
Addressing these considerations early helps homeowners avoid permit delays, redesigns, and unexpected expenses during construction. Many projects also benefit from evaluating how an addition fits into a broader full home remodeling plan or complements upgrades such as kitchen remodeling, bathroom renovations, or ADU construction to improve overall functionality and long-term value.
Proper early planning makes it possible to determine allowable square footage, assess structural needs, and establish a realistic budget from the start. Working with an experienced Mountain View home addition contractor ensures your project is designed to integrate seamlessly with your existing home—both architecturally and structurally—while navigating city permitting and inspections efficiently and in full compliance with local requirements.
Choosing the right contractor makes all the difference when planning a home addition in Mountain View. With W & W Builders Group, you’re working with a team recognized for craftsmanship, local expertise, and personalized service.
We take time to understand your lifestyle, vision, and long-term goals. Our dedicated project managers oversee every phase—design, permits, construction, and inspections—ensuring clear communication, accurate timelines, and exceptional results.
The timeline for a home addition in Mountain View, CA typically ranges from 4 to 9 months, depending on the size and complexity of the project. Smaller room additions may be completed more quickly, while larger projects—such as second-story additions or multi-room expansions—require additional time.
The overall schedule is influenced by design development, City of Mountain View permitting and plan review, construction scope, and final inspections. Working with an experienced local contractor helps keep the process organized and minimizes delays.
The average cost of a home addition in Mountain View generally ranges from $450 to $600+ per square foot, depending on structural requirements, materials, finishes, and site conditions. Projects involving major structural upgrades, custom design elements, or high-end finishes may fall on the higher end of the range.
A detailed evaluation of your home and goals is the best way to establish an accurate budget and avoid unexpected costs.
Key factors that affect cost include:
Square footage and layout
Structural modifications
Level of finishes and materials
Permit and inspection fees
Plumbing, electrical, and HVAC requirements
Every project is unique, which is why we provide a detailed proposal and transparent pricing upfront. This ensures you understand exactly what’s included, with no hidden surprises.
Yes—when designed and built correctly, a home addition can significantly increase property value in Mountain View. Adding functional square footage, improving layout, and enhancing livability often make a home more attractive to future buyers in this competitive market.
Additions such as primary suites, kitchen expansions, family rooms, and second-story builds tend to deliver the strongest long-term value when they integrate seamlessly with the existing home and meet all city requirements.
Planning a home addition in Mountain View begins with defining your space needs, budget, and long-term goals. It’s also important to understand local zoning rules, setbacks, floor area ratio (FAR) limits, and structural requirements that may affect your design.
Working with a local design-build contractor allows you to evaluate feasibility early, navigate city permitting, and create a plan that aligns with both your vision and Mountain View regulations.
Choosing the right contractor is essential for a successful home addition. Look for a licensed and insured contractor with proven experience in Mountain View home additions, strong local knowledge, and a clear design-build process.
A qualified contractor should offer transparent pricing, realistic timelines, consistent communication, and the ability to manage design, permits, construction, and inspections under one roof.
Before starting a home addition, it’s important to understand how construction will impact your existing home, utilities, and daily life. Early planning helps identify potential structural upgrades, access challenges, and permit requirements.
Addressing these factors upfront allows your project to move forward smoothly and ensures your addition complies with City of Mountain View regulations while meeting your lifestyle needs.
