ADU Building Contractor in Mountain View, California

Element Home Remodeling, your trusted Mountain View-based design-build firm, specializes in crafting beautiful ADU housing tailored to your unique style and needs. Let us transform your property with our expert ADU construction services, turning your vision into a modern, functional living space.

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ADU Housing Contractors in Mountain View

Element Home Remodeling, your trusted ADU housing contractor in Mountain View, California, transforms your home expansion dreams into reality. Nestled in the heart of Silicon Valley, Mountain View is an idyllic location for homeowners to extend their living spaces with Accessory Dwelling Units (ADUs). As a design-build contractor with a sterling reputation, we specialize in constructing beautiful and functional ADUs that complement the existing aesthetics of your home.

Our comprehensive ADU services in Mountain View span the entire spectrum from initial design to construction, adhering to the rules and regulations that govern ADU construction in this pristine locale. Whether it’s crafting an open floor plan to maximize space or selecting the perfect windows and doors to harmonize with your existing home, our dedicated project managers make the process effortless for homeowners.

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Book Appointment

Getting started is easy. Just give us a call or fill out our contact form to schedule your free estimate.


Free Estimate

We will come to your home for a free assessment and consultation. From this visit will be provided a free estimate.


Design Plans

We will provide you with amazing ideas and plans for you to choose form for your project.



Construction begins, we work with you every step of the way until the project is complete.

ADU Building Options

Small living room with dining table

In-law Suite

Attached or detached units that offer privacy and comfort, perfect for accommodating extended family.

small backyard adu home

Backyard Cottage

A quaint detached living unit nestled in your backyard, offering a serene retreat or a rental opportunity.

Attic cozy home office

Garage Apartment

Transforming your existing garage into a fully functional living space, maximizing the use of your property.

1661 Rock St-Home Remodeling Project (29)

Guest House

An elegant living space to host guests, ensuring their comfort while maintaining your privacy.

Home Office

A quiet, dedicated space designed for your work-from-home needs, promoting productivity and work-life balance.

Spacious kitchen in modern house

Rental Unit

A well-designed ADU to serve as a source of rental income, adhering to local rental regulations.


What is An Accessory Dwelling Unit (ADU)?

An Accessory Dwelling Unit (ADU) is a self-contained living unit that can be situated within the same lot as the main house or attached to the main house itself. ADUs, often referred to as granny flats, in-law units, or backyard cottages, offer a unique solution to accommodate extended family members or generate additional rental income, all while making efficient use of the existing property space.

ADU construction involves creating a fully functional living space complete with essential facilities such as a kitchen, bathroom, living area, and separate entrance. Whether you envision a detached ADU offering privacy or an attached ADU that seamlessly integrates with your existing home structure, building your ADU requires a blend of careful planning, adherence to local zoning and building regulations, and professional execution.

At Element Home Remodeling, we excel in crafting ADUs that not only meet the practical needs but also echo the aesthetic charm and modern design ethos of your primary residence. Our adept team guides you through the entire ADU construction process, ensuring that the resulting living unit is a valuable addition to your property, enhancing both its functionality and market value.

small backyard adu home

Experienced Design Build Team

Design-build contractors provide a streamlined approach for construction projects by combining the design and construction phases under one roof. This method promotes better communication, faster project delivery, and often cost savings. 

At Element Home Remodeling, we embody the design-build philosophy, ensuring a seamless transition from visionary design to quality construction, meeting your ADU needs with professionalism and a keen eye for aesthetics.

Our skilled team of designers and builders work closely with you from the inception of your project, ensuring every detail aligns with your expectations. This collaborative approach, combined with our deep understanding of local building codes and quality craftsmanship, makes us the go-to design-build contractors for ADU projects in Mountain View.

Accessory Dwelling Unit (ADU) Housing in Mountain View

Building an Accessory Dwelling Unit is a prudent step towards adding valuable living space to your property. Be it a cozy backyard cottage, an above-garage apartment, or a basement unit, our adept team is at your service, ensuring that your ADU project is executed to perfection. From San Jose to Sunnyvale, and Cupertino to Santa Clara, our commitment to quality and customer satisfaction remains steadfast.

As the Bay Area continues to flourish, homeowners in Palo Alto, Milpitas, and surrounding locales are recognizing the manifold benefits of ADUs. Whether you’re in need of a private living space for extended family or looking to generate additional income through rentals, an ADU is a viable and lucrative option. Our comprehensive services encompass everything from meticulous planning and design to quality construction, making the journey from concept to completion a rewarding experience.

Small living room with dining table
Living room and big window

Finding the Right Local ADU Builder in Mountain View

Navigating the journey of an ADU project in Mountain View requires partnering with a home builder who not only possesses the requisite expertise but also shares your vision for quality and aesthetic appeal. Finding the right local ADU builder is a pivotal step towards ensuring the success of your project. At Element Home Remodeling, we epitomize the blend of technical expertise, creativity, and customer-centric service essential for bringing your ADU vision to life.

One of the prime factors that set us apart as a trusted ADU builder is our extensive experience in ADU construction in the Mountain View region. Our local presence equips us with a deep understanding of the local building codes and regulations, ensuring a smooth construction process devoid of legal hurdles. Moreover, our familiarity with the architectural aesthetics preferred in Mountain View and the broader Bay Area enables us to design and construct ADUs that harmonize with the local ambiance.

Benefits of Building an ADU in Your Mountain View Home

Building an Accessory Dwelling Unit (ADU) in your Mountain View home is a wise investment that comes with a plethora of benefits. Here are some of the key advantages of adding an ADU to your property:

  1. Increased Property Value: The addition of an ADU significantly boosts the value of your property by adding valuable square footage and enhancing the overall functionality of your space.

  2. Rental Income: An ADU can be used as a rental unit, providing a steady source of rental income. The demand for rental spaces in Mountain View and the broader Bay Area makes ADUs a lucrative investment.

  3. Flexible Living Arrangements: ADUs offer flexible living arrangements to accommodate family members, guests, or even tenants. It’s an excellent way to provide a private living space for in-laws, adult children, or caregivers.

  4. Cost-Efficient Expansion: Building an ADU is a cost-effective way to expand your living space compared to purchasing a larger home or opting for traditional home extensions.

  5. Potential Tax Benefits: By generating rental income, an ADU may offer potential tax benefits. It’s advisable to consult with a tax professional to understand the specifics based on your personal circumstances.

  6. Enhanced Privacy: An ADU provides a separate living space while keeping loved ones nearby, thus ensuring a balance of privacy and family connectivity.

  7. Community Development: By contributing to the housing solutions in Mountain View, you play a part in community development, helping to address the housing shortage in a region known for its tech innovation and robust economy.

  8. Customized Space: An ADU can be customized to your specifications, ensuring it serves its intended purpose, be it a home office, a gym, or a hobby studio.

  9. Long-term Security: An ADU can serve as a future retirement home, providing long-term housing security.

  10. Sustainable Living: Compact, well-designed ADUs promote sustainable living by making efficient use of land and resources.

ADU Frequently Asked Questions

What permits do I need to obtain before starting my home remodeling project?

Navigating the permitting process can be a complex and time-consuming aspect of home remodeling. At Element Home Remodeling, we’re here to help you obtain the necessary permits for your renovation project, ensuring that all work is carried out in compliance with local building codes and regulations.

Before building an ADU, you’ll need to obtain a building permit from your local municipal or county planning department. It’s advisable to consult with a local planner to ensure compliance with all zoning and building regulations in your area. The process may also require you to submit architectural and engineering plans for review. It’s crucial to check with your local planning office to understand the specific permits and requirements applicable in your region, as these can vary.

By partnering with Element Home Remodeling, you can have peace of mind knowing that your remodeling project will adhere to all relevant regulations, keeping you on the right side of the law and ensuring the safety of your home. Please provide the next heading.

The duration of a ADU construction project can vary significantly depending on the scope and complexity of the work being undertaken. At Element Home Remodeling, we understand that it’s crucial to complete your renovation in a timely manner while maintaining exceptional quality and craftsmanship.

During the initial consultation, our design-build team will evaluate your specific remodeling needs and provide a realistic timeline for your project. Factors such as the extent of the renovations, the availability of materials, and any permitting requirements can influence the overall duration of the project.

Our experienced remodeling contractors in Mountain View are committed to working diligently and efficiently to ensure that your project stays on schedule without compromising on quality. By maintaining open communication throughout the process, we keep you informed of any progress or potential changes to the timeline, giving you peace of mind and a transparent renovation experience. Please provide the next heading.

The cost of building an Accessory Dwelling Unit (ADU) in Mountain View, CA, or the surrounding Bay Area can significantly vary based on a variety of factors. Here’s a breakdown of the costs and factors affecting them, based on information gathered from multiple sources:

1. Average Costs:

  • On average, the cost of building an ADU in California in 2023 ranges from $180,000 to $360,000​.
  • For a conversion ADU, the cost per square foot typically falls within the range of $175 to $225. Conversion ADUs involve transforming existing structures, like a garage, into livable spaces which can offer cost-saving benefits compared to new construction​.
  • The cost per square foot for constructing a detached ADU ranges from $375 to $600 or more, for units ranging from 500 to 1200 square feet​​.
  • As an example, a backyard cottage in Mountain View cost about $302,687.05 to design, permit, and build in 2015​.

2. Factors Affecting Costs:

  • Design and Planning Costs: This involves architectural drawings, engineer calculations, energy calculations, and land surveys. The average costs for this phase range from $6,000 to $14,000​.
  • City Fees: Fees for plan checks, impact fees for certain sizes, utility fees, and building permits are required, with the average total cost of city fees ranging between $3,000 to $11,000​.
  • Construction Labor and Material Costs: The costs here will greatly depend on the contractor hired, the designs, material choices, and the deals contractors have with local suppliers. The cost per square foot for building a conversion ADU ranges between $175 to $225, while for a new construction ADU, the cost ranges from $250 to $300 per square foot​.
  • Finish Materials Costs: Finish materials like flooring, doors, windows, cabinetry, tile, and stone will cost anywhere from $50 to $75 per square foot​.
  • Type of ADU: The two main types of ADUs are new construction and garage conversions. In most cases, a garage conversion will be cheaper by 20%-25% compared to a similar size new ADU construction due to the use of existing foundations, framed walls, and roofs​.

3. Inflation:

  • The California Construction Cost Index (CCCI) increased by a total of 30% from January 2021 to May 2023, impacting the overall costs of construction. For instance, an ADU that cost about $300,000 to build in January 2021 would cost $384,000 to build in 2023​.

Adding an Accessory Dwelling Unit (ADU) to your home in Mountain View significantly enhances its value in multiple ways. Here’s how:

  1. Increased Property Value: The additional square footage and functional living space provided by an ADU directly contribute to an increased property valuation. It’s a solid investment that pays off if you decide to sell your home in the future.

  2. Rental Income: An ADU can serve as a source of steady rental income, especially in a high-demand housing market like Mountain View. This rental income potential is a valuable asset that prospective buyers find appealing, thereby boosting your home’s market value.

  3. Versatile Living Arrangements: The versatility of having an additional self-contained living space is a desirable feature. It offers flexible living arrangements for extended family, guests, or tenants, making your property more attractive to a wide range of buyers.

  4. Cost-Efficient Expansion: ADUs provide a cost-efficient way to expand living space compared to traditional home additions or moving to a larger property. This cost-efficiency is a value-adding aspect for budget-conscious homeowners and buyers.

  5. Future Housing Security: Having an ADU provides a sense of housing security for your family. It can serve as a comfortable living space for aging family members or returning adult children, adding a layer of long-term security and convenience that adds value to your property.

  6. Community Appeal: By contributing to the local housing solutions, your property with an ADU becomes a part of the community’s development. It shows a commitment to addressing the housing needs in Mountain View, which is a value-adding aspect in the eyes of socially-conscious buyers.

  7. Customized Space: The ability to customize the ADU to meet specific needs, whether it’s a home office, gym, or a hobby studio, adds a unique selling proposition to your property. A well-designed ADU that complements the main house can significantly enhance the overall aesthetic appeal and functionality of your property.

  8. Sustainable Living: ADUs promote efficient use of land and resources, aligning with the principles of sustainable living. This eco-friendliness is a value-adding feature, especially for environmentally-conscious buyers.

  9. Legal Compliance: By ensuring that your ADU complies with all local building codes and regulations in Mountain View, you enhance the legal integrity and hence the value of your property.

  10. Appeal to Modern Lifestyle Needs: In today’s world, having additional space that can serve various purposes, including remote work or learning, is highly valued. An ADU aligns with modern lifestyle needs, making your property more appealing to today’s homebuyers.

In the city of Mountain View, homeowners have a variety of options when it comes to building an Accessory Dwelling Unit (ADU) on their property. The types of ADUs you can build are influenced by local zoning regulations, the size of your lot, and your specific needs. Here are some of the common types of ADUs you can consider:

  1. Detached ADU: A standalone structure separate from the main house, offering complete independence and privacy. It can be built anew or by converting an existing structure like a garage or shed.

  2. Attached ADU: This type is physically attached to the main house, either by adding onto the existing structure or by converting a portion of the house, like a basement or an attached garage.

  3. Garage Conversion ADU: Transforming an existing garage into a livable space is a popular choice. It’s a cost-effective option as it utilizes the existing foundation and structure.

  4. Above-Garage ADU (Carriage House): An ADU built above a garage provides a separate living space while maintaining the functionality of the garage below.

  5. Basement Conversion ADU: If your home has a basement, it can be converted into a self-contained living space with its own entrance.

  6. Junior ADU (JADU): A smaller unit created within the existing walls of your home, typically by converting a bedroom. JADUs have a separate entrance and a small kitchenette, with the option to include a bathroom.

  7. Internal ADU: Similar to a JADU but larger, an internal ADU involves converting a portion of the main house into a separate living unit with a full kitchen and bathroom.

  8. Deck ADU: Building an ADU on top of a deck or over a driveway is an innovative way to create additional living space without occupying more of the yard.

  9. Two-Story ADU: If your lot size and zoning regulations allow, a two-story ADU can provide ample living space, potentially housing multiple occupants.

  10. Modular or Prefabricated ADU: These are factory-built units installed on-site, offering a quicker and sometimes more cost-effective solution for adding an ADU to your property.

Each type of ADU comes with its own set of benefits and considerations, particularly in terms of cost, construction time, and the level of integration with the main house. At Element Home Remodeling, we have extensive experience in designing and constructing a wide range of ADUs. Our team works closely with homeowners in Mountain View to navigate the local regulations and create ADUs that meet their needs while adding value and functionality to their properties.

In Mountain View, CA, while no planning permit is needed for constructing an ADU, obtaining a building permit is mandatory. The city advises applicants to review preliminary ADU/JADU (Junior Accessory Dwelling Unit) plans with a planner to ensure compliance with all zoning requirements before preparing detailed construction plans for building permit submission​1​. For comprehensive information on ADU laws and regulations in Mountain View, you may visit the city’s official website.

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