About Us
We are a licensed and bonded construction company with over 15 years of experience in residential construction. Our ADU contractors are dedicated to providing high-quality ADU construction services from start to finish. When you hire us to build your ADU, we take care of everything, from initial design and planning, obtaining the necessary permits, all the way through construction, and the final walk-through for last touch-ups. Our commitment to quality and attention to detail ensures that every ADU we build is functional, stylish, and fully compliant with local regulations.
At Cali Bath and Kitchen, every ADU project is handled by our experienced in-house crew, no outsourcing, no guesswork. Each trade, from demolition and plumbing to tile, cabinetry, and electrical, is covered by well-trained specialists who know how to deliver lasting results. As a family-owned business based in San Diego, we stay closely involved in every step, keeping homeowners informed and supported throughout the process. We proudly serve communities across the region, including La Mesa, Carlsbad, Poway, El Cajon, Chula Vista, Del Mar, Coronado, and Fairbanks Ranch. By limiting the number of active projects, we’re able to give every build the time, focus, and communication it deserves.
Our design-build process is streamlined to minimize delays and confusion. From the first consultation, clients work directly with our team to align on goals, timeline, and budget. There’s no bouncing between architects, designers, and subcontractors; our crew manages everything in-house to ensure consistency, accountability, and efficiency. This hands-on structure allows us to deliver well-coordinated ADU builds that meet the functional needs and aesthetic preferences of San Diego homeowners.
What is an ADU?
An Accessory Dwelling Unit (ADU) is a self-contained residential unit located on the same property as a single-family home. ADUs can be detached, attached, or conversions of existing spaces such as garages or basements. They offer an excellent way to add value to your property, generate rental income, or provide additional living space for family members. With the increasing need for affordable and flexible housing options, ADUs have become a popular solution for homeowners in San Diego looking to maximize their property’s potential.
In San Diego, ADUs are more than just a trend; they’re part of the city’s long-term plan to expand housing options without altering neighborhood character. Recent changes in local and state regulations have made it easier than ever to build these units legally and efficiently. Whether you’re thinking about a rental suite, a private space for aging parents, or a guest retreat, ADUs offer flexibility that grows with your family and lifestyle. Plus, with the right design, even a compact structure can feel spacious, private, and fully livable.
Types of ADUs
There’s no one-size-fits-all approach when it comes to building an ADU. Depending on your goals, budget, and available space, here are the most common types of ADUs homeowners consider:
Detached ADU
A standalone unit separate from the main house offers maximum privacy and independence. It is ideal for long-term rentals, guesthouses, or providing a private home for aging parents. Detached ADUs are often the most flexible in terms of design and layout, and they can include full kitchens, multiple bedrooms, or even outdoor patios.
Attached ADU
This type is physically connected to the main house but has a separate entrance, allowing for privacy without a full separation. It’s a great option for properties with limited yard space. Attached ADUs are often used as in-law suites, home offices, or transitional housing for adult children.
Garage Conversion
Transforming an existing garage into a fully functional living space is one of the most cost-effective ways to build an ADU. Garage conversions typically include a kitchenette, bathroom, and open-concept living area. Since the foundation and structure already exist, the project timeline can be shorter.
Basement or Attic Conversion
Repurposing underused interior space is a smart way to create an ADU without expanding your home’s footprint. These conversions are ideal for homes in hilly areas like parts of La Mesa or El Cajon, where basements are more common. With proper waterproofing and insulation, these areas can become cozy, rentable studios or private family units.
Junior ADU (JADU)
A JADU is a compact living unit, typically under 500 square feet, carved out of the existing home. It includes a separate entrance, a small kitchenette, and may share a bathroom with the main house. JADUs are a popular choice for multigenerational living or as short-term rental spaces, and they often qualify for simplified permitting in San Diego.
Why Build an ADU?
Whether you’re looking to create more space or make the most of your property investment, building an ADU comes with several practical benefits for homeowners in San Diego and surrounding areas:
Increase Property Value
An ADU can significantly boost your home’s worth by adding livable square footage and long-term rental potential. In a competitive real estate market like San Diego, this extra unit can make your property more appealing to future buyers or investors.
Generate Rental Income
Many homeowners use their ADUs to bring in passive income through long-term leases or short-term rentals. With high demand for affordable housing in areas like Chula Vista, El Cajon, and Carlsbad, even compact units can rent for competitive rates.
Multi-Generational Living
ADUs provide a smart solution for families who want to keep loved ones close while maintaining privacy. Whether it’s aging parents, college-aged kids, or extended family, an ADU offers the right balance of independence and connection.
Flexible Use
Your ADU can adapt as your life changes. What starts as a guest suite can later become a remote office, a creative studio, or a home gym. Some clients even convert theirs into dedicated homeschooling areas or wellness spaces.
Sustainable Housing Solution
With the right design, ADUs can be built using energy-efficient appliances, solar panels, and sustainable materials. These small-footprint dwellings naturally consume less energy and often align with San Diego’s green building incentives.
Affordability
Building an ADU is a cost-effective way to meet housing needs without moving, compared to purchasing a new home or upsizing. Many families see it as a strategic long-term investment that pays for itself over time.
Work-From-Home Space
With more professionals working remotely, a detached or private ADU makes for an ideal home office or client-facing workspace. It’s a quiet, dedicated zone that separates work from the main living space, boosting focus, productivity, and balance.
Our ADU Remodeling & Construction Services
Cali Bath and Kitchen delivers high-quality, fully customized ADUs, built for function, comfort, and long-term value. Every step is handled by our in-house crew of experienced professionals. Here’s what’s included when you work with us:
- Design & Space Planning: Tailored layouts that maximize functionality, natural light, and privacy, designed for your lifestyle and lot size.
- High-End Interior Finishes: Premium countertops, modern tile work, custom cabinetry, and flooring options that balance durability with style.
- Smart Home Technology: Flawless integration of features like smart thermostats, lighting, and home security systems for modern convenience.
- Eco-Friendly Upgrades: Options like solar panels, low-flow fixtures, and energy-efficient windows to reduce your carbon footprint and energy bills.
- Permit Handling & Zoning Compliance: We manage the entire permitting process and work closely with local agencies to ensure your build meets all current San Diego ADU codes.
- Full-Service Construction: Our well-trained crew covers every trade, including plumbing, electrical, waterproofing, tile, cabinetry, flooring, painting, and more.
- Clear Timeline & Communication: We keep you updated at every phase of the project, with clear milestones and responsive communication from day one.
- Final Walkthrough & Finishing Touches: Once your ADU is complete, we walk through the space together, address any last details, and ensure everything is move-in ready.
ADU Design Styles We Offer
Whether you’re going for timeless charm or modern simplicity, our team can bring your vision to life. Here’s a look at the design styles we frequently build and how they shape the look, feel, and function of your ADU:
| Style | What It Looks Like |
|---|---|
| Modern & Sleek | Crisp lines, neutral colors, and smart home tech. Think frameless cabinetry, open-concept layouts, and large windows that bring the outside in. |
| Traditional & Cozy | Warm, inviting interiors with classic details like shaker cabinets, decorative trim, and farmhouse-style lighting. Ideal for family-focused living. |
| Minimalist & Functional | Clean, clutter-free spaces that prioritize storage and simplicity. Built-in shelving, light finishes, and efficient floorplans define this style. |
| Luxury High-End Feel | Spa-style bathrooms, chef-inspired kitchens, and elevated details like waterfall islands, designer lighting, and custom woodwork. |
| Eco-Friendly & Sustainable | Solar panels, energy-efficient appliances, low-VOC finishes, and natural materials create a home that’s smart, healthy, and future-ready. |
The ADU Building Process: What to Expect
From the first conversation to the final walkthrough, building an ADU with Cali Bath and Kitchen is a clear, step-by-step experience. Here’s what you can expect during the process:
- Initial Consultation: We assess your needs, property layout, and budget.
- Design & Planning: Our architects create a functional and stylish design that aligns with your vision.
- Permitting & Approvals: We handle the paperwork, ensuring everything is compliant with local regulations.
- Site Preparation & Foundation: Prepping the site and laying the foundation for a solid structure.
- Construction & Installation: Building the ADU with quality materials and expert craftsmanship.
- Interior Finishes: Flooring, cabinetry, appliances, and final touches to bring the space to life.
- Final Walkthrough & Handover: Ensuring everything is perfect before you move in or rent out the unit.
ADU Pricing Breakdown: What to Expect (2025)
Building an ADU is an investment that can increase your property value, create passive income, or provide much-needed space for your family. But how much does it actually cost?
While every project is unique, here’s a general breakdown of what most homeowners in San Diego can expect when planning their ADU budget:
Average ADU Cost Ranges
| Type of ADU | Estimated Cost | Details |
|---|---|---|
| Garage Conversion | $90,000 – $150,000 | Ideal for homeowners who want to repurpose an existing structure. Lower construction costs and quicker timelines. |
| Attached ADU | $140,000 – $250,000 | Shares one wall with the main home, allowing for easier utility access while still offering privacy. |
| Detached ADU | $180,000 – $350,000+ | Standalone structure, fully independent with its own systems. Requires new foundation, roof, and separate utility lines. |
| Junior ADU (JADU) | $70,000 – $110,000 | Built within the existing home, usually under 500 sq. ft., with its own entrance and kitchenette. Great for multigenerational living. |
| Luxury ADU Build | $300,000 – $450,000+ | High-end custom design with premium materials, designer kitchens, spa-style bathrooms, and integrated smart home systems. |
These figures are ballpark estimates based on recent projects in areas like La Mesa, Chula Vista, Poway, El Cajon, and Carlsbad. Your exact cost will depend on site conditions, size, finish level, and design complexity.
What Affects the Cost?
Several factors can impact your final ADU price:
- Site Conditions: Sloped lots, limited access, or soil issues may increase foundation or grading costs.
- Size & Layout: A larger footprint or multi-bedroom layout will naturally cost more.
- Finish Level: Luxury countertops, tilework, cabinetry, and smart tech integration all affect pricing.
- Permits & Code Requirements: Local regulations vary slightly between cities (e.g., Coronado vs. Del Mar).
- Utility Connections: Tying into existing water, sewer, and electrical lines can vary depending on layout.
What’s Included with Our ADU Projects
Every ADU we build includes:
- Custom design + planning
- Permit handling and city approvals
- Demolition, foundation, framing, and roofing
- Plumbing, electrical, tilework, waterproofing, cabinetry
- Flooring, paint, fixtures, and finishes
- Smart home options (upon request)
- Final walkthrough and touch-ups
Frequently Asked Questions
How long does it take to build an ADU in San Diego?
Timelines vary based on design complexity and permitting, but most ADUs take 4 to 6 months from start to finish. Our team handles everything, including permits, so there are no delays from miscommunication or outsourcing.
Do I need a permit to build an ADU?
Yes, all ADUs require city permits. The good news: we take care of the entire permitting process for you. Our familiarity with local regulations in San Diego, Chula Vista, El Cajon, and surrounding areas helps us get approvals faster and more efficiently.
on design complexity and permitting, but most ADUs take 4 to 6 months from start to finish. Our team handles everything, including permits, so there are no delays from miscommunication or outsourcing.
How much does an ADU cost to build?
Costs depend on the type, size, and finish level of your ADU. A garage conversion or JADU can be more budget-friendly, while a detached ADU with luxury finishes will cost more. We’ll provide a detailed estimate during your consultation so there are no surprises.
Can I rent out my ADU for additional income?
Absolutely. Many of our clients use ADUs as long-term rentals, guest suites, or short-term stays. We’ll help you design a unit that’s both functional and attractive to renters.
What’s the difference between a JADU and a full ADU?
A Junior ADU (JADU) is a smaller unit, usually under 500 square feet, built within the footprint of the main home. It must have its own entrance and a kitchenette, but shares utilities. A full ADU can be detached, larger, and fully self-contained, offering more flexibility.
Explore Our ADU Gallery
Browse through our portfolio to see how we transform spaces into beautifully designed, functional living areas. Whether you’re looking for a modern retreat or a cozy guesthouse, we have the expertise to bring your vision to life. We showcase completed projects, highlighting our attention to detail and high-quality finishes.
Let’s Build Your Dream ADU!
Are you ready to add a high-quality ADU to your property? Contact us today for a free consultation and learn how we can bring your project to life!