ADU & Garage Conversions in Cerritos, CA: Trusted Local Expertise for Your Investment
At Modern ADU Builder & Garage Conversions, we specialize in turning your existing space into functional, comfortable homes that meet your needs and local regulations. Located in the growing city of Cerritos—home to nearly 50,000 residents across 8.86 square miles—our services help homeowners maximize their property in one of Los Angeles County's most desirable communities.
We make the process simple by handling everything from design and permits to construction, ensuring your project runs smoothly from start to finish. Whether you want a quiet guest house, a rental unit, or extra family space, we tailor our solutions to fit your goals and budget. Since Cerritos experienced its fastest growth between 1970-1972, transforming from a rural "Dairy Valley" with just 3,439 residents to the diverse suburban community it is today, the city has evolved to support housing innovations like ADUs.
With the growing demand for ADUs in Cerritos, you can increase your property's value and make better use of your land. In a city where the median household income exceeds $91,000 and homeownership rates reach 82%, adding an ADU represents a smart investment. We guide you through the rules and options so you can decide what works best for you.

Customized Design Solutions for ADUs and Garage Conversions
We focus on creating designs that fit your needs, space, and lifestyle. Whether you want a comfortable living area, a functional guest space, or extra rental income, we tailor the layout and features to suit your goals. We also make sure the space is efficient and modern.
Accessory Dwelling Unit Layout Options
We offer a variety of ADU layouts depending on your lot size and preferences. Common choices include studio, one-bedroom, or two-bedroom designs. Each layout balances living space with convenience, often including a small kitchen, bathroom, and living area.
We help you decide on open floor plans for a roomy feel or segmented rooms for privacy. We also consider storage needs and natural light. Our goal is to create a space that feels like a real home, not just an add-on.
Maximizing Garage Space
Converting your garage is a smart way to add living space without expanding your property. We assess the existing structure and look for ways to improve layout and functionality. This can include adding windows, insulation, or reconfiguring walls to open the floor plan.
Given Cerritos' average household size of 3.15 people and its diverse age distribution (with about 20% under 18 and nearly 18% over 65), our garage conversions can be customized to serve multiple generations or specific family needs—from independent living spaces for seniors to home offices or study areas for families with children.
We also pay attention to building codes and any restrictions in Cerritos, CA. Preserving or upgrading garage features, like retaining a garage door as a slider patio door, can add character while expanding usability. Every inch is planned to make your garage conversion practical and comfortable.
Energy Efficiency and Modern Features
We incorporate energy-saving elements into every design to help reduce your utility bills and environmental impact. This includes LED lighting, energy-efficient windows, and proper insulation. We encourage using modern appliances and fixtures that lower energy use.
Cerritos has a history of environmental leadership—it dedicated the nation's first solar-heated City Hall in 1978 and continues to participate in forward-thinking initiatives like the Magnolia Power Project, which provides 10 megawatts of power to the city. Our ADU designs reflect this progressive approach with sustainable features that align with the community's values.
Smart home technology, such as programmable thermostats and security systems, can be added to increase convenience and safety. These features improve daily living and can raise your property's value. Our designs balance comfort, cost, and efficiency for your new space.

Financing and Return on Investment for ADUs
Adding an ADU or converting your garage in Cerritos can be a smart financial move. You'll want to understand how to pay for it, what income it might generate, and how it can impact your home's value over time.
Financing Options for Homeowners
You have several ways to finance your ADU project. Many homeowners use home equity loans or lines of credit because they often have lower interest rates and flexible repayment terms. Another option is a cash-out refinance, which replaces your current mortgage with a larger one that includes extra funds for construction.
In Cerritos, where the median household income is $91,487 and only 5.5% of residents live below the federal poverty line, homeowners often have strong financial positions to leverage for ADU investments. With 81.9% of housing units being owner-occupied, many residents have substantial equity to tap into for home improvements.
Some may qualify for specialized ADU loans or local grants that support affordable housing projects in Cerritos.
Personal loans and construction loans are also options, but these often have higher interest rates.
When choosing financing, consider your budget, current mortgage rates, and how soon you want to start construction. We can help you explore these options to find the best fit for your situation.
Rental Income Potential
Converting a garage or building an ADU creates a separate living space you can rent out. In Cerritos, rental demand is strong, so you could see consistent income. With Cerritos' strategic location near major freeways and its status as part of the Los Angeles-Long Beach-Anaheim Metropolitan Statistical Area, rental demand remains robust.
The average household spending on retail in Cerritos is approximately $36,544 per resident—the second-highest in California—indicating strong economic capacity among potential renters. Typical rent for an ADU in the area ranges depending on size and features but can add up to several hundred dollars a month or more. This extra income can help offset loan payments or improve your cash flow.
If you decide to rent, make sure your ADU meets local regulations and safety codes to avoid fines. We guide you through compliance to protect your investment and keep renters comfortable.
Long-Term Value and Resale Benefits
An ADU boosts your home's total living space, which is attractive to future buyers. Homes with legal ADUs often sell faster and at higher prices than those without. You increase your property's value by creating usable space that can serve multiple purposes—guest housing, offices, or rentals. This makes your home more flexible and appealing long-term.
Keep in mind, proper permits and quality construction are crucial. Unpermitted ADUs could hurt your resale prospects. We ensure your ADU or garage conversion adds lasting value with no legal risks.
Getting Started with Modern ADU Builder & Garage Conversions
When you choose us, the first step is a free consultation. We listen to your needs and talk about what's possible for your property. This helps us create a clear plan that fits your goals and budget. We handle the whole process, from design to permits and construction. Our team knows the local Cerritos ADU rules, so we make sure your project meets all city requirements.
We keep you updated every step of the way. You'll know when work starts, key milestones, and when you can expect completion. Our goal is to make the process smooth and predictable for you.

