ADU & Garage Conversions in Cerritos, California: Proven Results from Experienced Contractors


At Refined ADU Builder & Garage Conversions, we specialize in turning underused garages into functional, comfortable living areas that meet California's building codes and regulations. Founded in the vibrant city of Cerritos, home to over 49,500 residents across 8.86 square miles, our company understands the unique architectural and zoning requirements of this diverse Los Angeles County community.


We make the process simple by handling everything from design to permits and construction, so you can focus on what the new space will do for you. Whether you want a rental unit, a guesthouse, or extra room for your family, we understand what works best for local homes and neighborhoods. Our designs complement the progressive nature of Cerritos, a city that has embraced innovation since becoming one of the fastest-growing California cities between 1970-1972 when its population skyrocketed from 16,000 to 38,000.


You'll find our team knowledgeable about the latest laws in Cerritos, including size limits and zoning rules, ensuring your project moves smoothly. Working with us means you get a service that values quality, efficiency, and clear communication throughout your garage conversion or ADU build. We're committed to maintaining the high property values of Cerritos, where the assessed valuation of the city is $7.17 billion and residents are the second-highest retail spenders in California.




What Are ADUs and Garage Conversions?


Accessory Dwelling Units (ADUs) are separate living spaces on your property. They can be detached buildings, attached additions, or converted parts of your home. Garage conversions change an existing garage into a livable area.


Both types create extra bedrooms, rental units, or guest houses without needing new construction outside your lot. ADUs and garage conversions often include kitchens, bathrooms, and private entrances, making them fully functional homes. These units are particularly valuable in Cerritos, where the average household size is 3.15 persons, significantly higher than the national average.


Benefits of Building an ADU or Converting a Garage


ADUs and garage conversions increase your property's value and living space. You can create rental income or house family members nearby. These projects often cost less and take less time than building a new home. They also allow you to adapt to changing needs without moving. For example, a garage conversion can be a home office, a guest suite, or an independent rental. The flexibility helps you use your property efficiently. This is especially relevant in Cerritos, where the median household income of $91,487 means many residents have the capital to invest in property improvements that generate returns.


Cerritos Zoning and Local Regulations


Cerritos has clear rules for ADUs and garage conversions to ensure safety and neighborhood compatibility. You must meet size limits, setback requirements, and parking rules. These regulations reflect the city's commitment to careful urban planning, which began when Cerritos was incorporated in 1956 as Dairy Valley before being renamed in 1967.


Conversions require your existing structure to meet building codes. You will need permits and must work with licensed contractors. The city encourages ADUs to help with local housing needs but enforces standards to protect your property and neighbors. This approach aligns with Cerritos' history of progressive governance—the city dedicated the nation's first solar-heated City Hall complex in 1978 and continues to prioritize sustainable development.


Understanding these rules early helps avoid delays and keeps your project on track. Given that Cerritos operates under a council-manager form of government established by its 1958 charter, working with experts familiar with the local governance structure is essential for navigating permits efficiently.



ADU Design and Planning Services


We guide you through every step of designing and planning your ADU or garage conversion. Our focus is on creating a space that fits your needs, meets local rules, and gets approved smoothly. We handle design, architecture, and permits with clear communication and expert support.


Custom ADU Designs


We create designs that match your goals and the layout of your property. Whether you want a studio, one-bedroom, or a multi-room unit, we tailor the design to your lifestyle and budget. Our team considers natural light, storage, privacy, and flow to make your ADU comfortable and functional.


You get options to choose from and can request changes during the process. We balance style and practicality to ensure the unit increases your property value and meets city standards. Our designs reflect the modern architectural aesthetic that Cerritos has embraced, including elements inspired by notable local structures like the titanium-paneled Cerritos Millennium Library, which was the first building in North America with this distinctive exterior.


Architectural Planning and Consultation


Our architects plan detailed drawings for your ADU or garage conversion, making sure all measurements and building codes are correct. We take into account structural needs, local zoning laws, and energy efficiency. During consultations, we clarify technical aspects and answer your questions.


We help you understand design choices and how they affect cost and timeline. This step avoids surprises during construction. Our attention to detail mirrors Cerritos' own commitment to excellence in public facilities, from its award-winning library to the renowned Cerritos Center for the Performing Arts with its innovative movable seating configurations.




Financing and Budget Planning


Planning your budget carefully helps avoid surprises and keeps the project on track. Knowing how much your ADU or garage conversion will cost and exploring financing options will guide your decisions from start to finish.


Cost Estimate Process


We start by assessing your existing space and what changes you want. Then, we look at materials, labor, permits, and design costs. Each project is unique, so we provide a detailed written estimate before work begins. Typically, garage conversions cost less than building a new ADU from scratch. We include all expenses like plumbing, electrical work, and inspections. This way, you can see where your money goes and adjust your plans if needed.


Our team works with you to outline a clear budget. We update the estimate if any changes arise during construction, so you stay informed at every step. Our transparent pricing recognizes the economic profile of Cerritos residents, where the median household income is $91,487 and residents are among the highest retail spenders in California, averaging $36,544 per resident annually.


Financing Options for Homeowners


You have several ways to finance your ADU or garage conversion. Many customers use home equity loans or lines of credit to tap into their home's value. These usually offer lower interest rates compared to personal loans. Other options include:


  • Construction loans designed for remodels
  • Cash-out refinancing to access funds
  • Personal loans if you want a fixed amount upfront


We recommend talking with your bank or financial advisor to find the best fit based on your credit and payment plans. You may also qualify for local or state incentives that help reduce costs, depending on your area. These financial considerations are particularly relevant in Cerritos, where property values are strong, supported by the city's $7.2 billion assessed property valuation and booming retail sector that generates $2 billion in taxable retail sales. Understanding your financing options early helps you set realistic expectations and complete your project without financial stress.


Contact Refined ADU Builder & Garage Conversions


You can reach us easily to discuss your ADU or garage conversion project. We are ready to answer your questions and provide the guidance you need.


  • Phone: Call us at (562) 123-4567 to speak directly with our team.
  • Email: Send your project details or inquiries to info@refinedadu.com. We respond promptly.


Our office hours are Monday through Saturday, 8:00 AM to 6:00 PM. We are flexible to fit your schedule and can arrange visits to your property. We proudly serve all neighborhoods within Cerritos' 90703 ZIP code, a dedicated postal code that was established in the mid-1990s to accommodate the increasing number of new addresses in this growing community.


If you prefer, you can fill out a brief contact form on our website to start the conversation. We will follow up quickly. We work with you every step of the way to make your ADU or garage conversion project clear and manageable. Our service area covers all parts of Cerritos, from the retail centers near the Los Cerritos Center to residential neighborhoods near the city's 18 community parks, including the historic Heritage Park and Pat Nixon Park.