Garage-to-Rental Unit ADU Conversion in Pasadena, CA


If you're thinking about turning your unused garage into a profitable rental unit, Pasadena Master ADU Builder offers comprehensive garage-to-rental unit ADU conversion services that deliver exceptional results. We handle everything from initial design concepts and architectural planning to permit acquisition, construction management, and final inspections, making it easier for you to add valuable extra living space and generate consistent, long-term rental income.


Our experienced team specializes in creating safe, comfortable, and fully code-compliant rental units that maximize both the functionality and market value of your property while ensuring optimal tenant satisfaction. We focus on practical, cost-effective solutions that align perfectly with your specific needs, timeline, and budget constraints, incorporating modern amenities and energy-efficient features that today's renters demand.


With years of dedicated experience serving the Pasadena community and surrounding areas, we have developed an in-depth understanding of local building codes, zoning requirements, HOA restrictions, and permit processes, allowing us to navigate even the most complex regulatory challenges smoothly and efficiently while maintaining project timelines. Our proven track record includes dozens of successful garage conversions that have transformed underutilized spaces into attractive, income-generating properties.


We'll help you transform your underutilized garage space into a beautiful, functional rental unit that generates substantial income for years to come—all without the typical stress, delays, and complications that often plague construction projects. From concept to completion, we're your trusted partner in maximizing your property's potential.

Our Customization Options for Rental ADUs in Pasadena


We focus on making each rental ADU fit your specific needs. This means choosing the right layout, selecting quality materials, and adding features that improve comfort and access. Our goal is to help you get the best use out of your space.

Floor Plan Selection


We offer several floor plan options to match your property's size and your rental goals. Whether you want a studio, one-bedroom, or two-bedroom unit, we make sure the layout maximizes space without feeling cramped.


Open floor plans are popular because they create a roomy feel and allow for flexible furniture placement. For units with bedrooms, we include closets and storage spots to keep things organized.


We also plan for essential areas like kitchens and bathrooms to fit naturally within the design. This helps the ADU feel like a complete home, which attracts renters and can increase your income.

Materials and Finishes


Choosing the right materials affects the ADU’s durability and appeal. We use long-lasting siding like fiber cement or vinyl, which resist weather and need little upkeep.


Inside, we offer options for flooring like laminate, vinyl plank, or hardwood. Each choice balances cost and style, letting you pick what fits your budget and the look you want.


For kitchens and bathrooms, we use water-resistant finishes to prevent damage. Our cabinets and countertops come in different styles, so you can select modern or classic designs.

Accessibility Features


We include accessibility options to make the ADU usable for people with different needs. Features like wider doorways and ramps help those who use wheelchairs or walkers move around easily.


Grab bars in bathrooms and non-slip flooring reduce risks for older renters or anyone with mobility challenges. We also offer lower countertop heights and easy-to-reach light switches to improve comfort.


These features not only serve more tenants but can also increase your rental’s value and marketability over time.

Benefits of Garage-To-Rental Unit ADU Conversions


Converting a garage into a rental unit offers several practical advantages. These include making the most of your property’s value, earning extra income, and using space that might otherwise be wasted.

Increased Property Value


When we turn a garage into a rental unit, the overall worth of your property usually rises. Adding a living space means more usable square footage, which buyers often seek.


This type of conversion can increase the market value by 15% to 30%, depending on location and quality. It also makes your home stand out compared to others without extra living areas.


Moreover, properly designed ADUs follow building codes, which means your investment is secure and adds lasting value. We focus on durable finishes and smart layouts that appeal to future buyers.

Additional Rental Income


Creating a rental unit from your garage can provide steady monthly income. Renting out a well-built ADU can bring in $1,200 to $2,000 or more each month, depending on the area.


This income helps cover mortgage payments, property taxes, or maintenance costs. It also provides financial flexibility without needing to sell your home.


We help ensure that your unit meets legal rental standards. This reduces risks and makes it easier to find reliable tenants quickly.

Optimized Use of Existing Space


Garages often sit empty or underused. Turning them into rental units means using that space for something productive and profitable.


Unlike building a new structure, conversion saves time, money, and avoids complex zoning issues. We guide you through efficient designs that make even small garages livable and comfortable.


Our team focuses on maximizing natural light, ventilation, and privacy to create a quality living environment. This approach transforms unused space into a valuable asset for your property.

Our Garage Conversion Process


We guide you through every step, from checking your space and talking about your needs to creating plans and getting permits. Our focus is on making your garage into a safe, legal, and comfortable rental unit.

Initial Assessment and Consultation

We start by visiting your property to inspect your garage. We look at the size, structure, and condition to see what changes are needed. We discuss how you want to use the space and what features you need, like a kitchen or bathroom.


We also explain any challenges such as electrical work or plumbing. Our goal is to make sure your garage can be converted safely and efficiently. After the visit, we give you a clear plan with costs and timelines.

Design and Planning

Our design team creates detailed floor plans and 3D models of your future rental unit. We focus on making the best use of the space. We consider lighting, ventilation, and access for comfort and convenience.


We help you choose materials and finishes that fit your style and budget. We make sure the design meets local building codes and energy rules. We work closely with you to adjust details until you are satisfied.

Permitting and Approvals

We handle all paperwork to get permits from the city or county. This includes submitting our plans and scheduling inspections. We know the rules and help avoid delays or rejections.


We stay in contact with local authorities and update you on the status. Our experience speeds up the process and ensures your project follows every law. Getting approval is one less worry for you.

Frequently Asked Questions About Garage-to-Rental Unit ADU Conversion


  • What are the zoning requirements for converting a garage into a rental ADU in Pasadena?

    Pasadena requires that the garage conversion meets local zoning rules. The property must be in a zone that allows ADUs. The new unit must follow size limits and setbacks from property lines.

  • How long does the process typically take from design to completion?

    The process usually takes 4 to 6 months. This includes design, permitting, and construction. Delays can occur if permits take longer or if unexpected work is needed.

  • What are the estimated costs associated with transforming a garage into a fully functional ADU?

    Costs vary but expect between $80,000 and $150,000. Price depends on size, finishes, and whether plumbing or electrical work is needed.

  • Are there any specific building codes in Pasadena that affect the design of a garage conversion ADU?

    Yes. The ADU must meet Pasadena’s building codes for safety, energy efficiency, and accessibility. This includes fire safety and proper insulation.

  • Can existing garage structures be remodeled, or is new construction necessary for ADU compliance?

    Most existing garages can be remodeled to meet ADU standards. In some cases, new walls or foundation work may be required, but full new construction is not always needed.