Accessory Dwelling Unit (ADU) Construction in Campbell, California

Build Value, Flexibility, and Income with an ADU in Campbell

Campbell, California, with its inviting neighborhoods and high demand for housing, is a prime location for building an Accessory Dwelling Unit (ADU). Whether you’re looking to accommodate extended family, generate rental income, or create a private office or guest suite, an ADU provides unmatched versatility and long-term value for your property.

At Construction Remodeling in Bay Area, we specialize in custom ADU construction that blends seamlessly with your existing home while meeting all local zoning and code requirements. From garage conversions to detached backyard cottages, we handle every aspect of the ADU process—so you can expand your living space without the stress.

Frequently Asked Questions

Campbell allows for detached ADUs, attached ADUs, interior conversions (like basements), and garage conversions, depending on your lot size and zoning.

 

ADU costs typically range from $120,000 to $300,000+ based on size, type (attached vs. detached), materials, and site-specific factors.

 

Yes, Campbell requires building permits, and we handle all the paperwork, plan submissions, and inspections for you.

 

The timeline varies, but most ADU projects take between 4 to 9 months, including design, permitting, and construction.

 

Yes! ADUs are a popular source of passive income in Campbell. You can use it as a rental, guesthouse, or even home office.

BRANDS WE WORK WITH

Our Comprehensive Accessory Dwelling Unit (ADU) Services in Campbell

At Construction Remodeling in Bay Area, we take a turnkey approach to ADU development—guiding you from idea to completion with professionalism and care.

Kitchen Makeover Painting & Finishing Touches

Custom ADU Design

We create detailed ADU plans based on your goals, whether it’s a studio, one-bedroom, or multi-functional living space. Our team ensures every square foot is used effectively and attractively.

Bathroom Renovations Lighting & Electrical Improvements

Site Assessment & Feasibility

We evaluate your property layout, utility connections, and city regulations to determine the best ADU type and placement options.

room-addition

Detached ADU Construction

Perfect for added privacy, a detached unit is like a second home on your lot. We build detached ADUs with independent entrances, kitchens, and bathrooms.

Garage Conversions

If you’re not using your garage, turn it into a fully functioning living space. We rework the structure, install insulation, and add utilities to make it livable year-round.

Attached ADUs & Internal Conversions

Whether it’s converting a portion of your home or building an extension, we ensure your new space integrates seamlessly with your main house.

Full Permit Handling

We manage all Campbell city permits, compliance checks, and inspections so your ADU meets every legal requirement and passes all inspections.

Our Proven ADU Construction Process

We keep your ADU project on track with a well-organized process, tailored to Campbell’s building codes and your specific needs.

1. Consultation & Property Review
We visit your site to understand your goals, review your layout, and recommend the best ADU type and placement.

2. Design & Planning
We create detailed floor plans, architectural designs, and 3D renderings, followed by a clear, itemized estimate for transparency.

3. Permitting & City Approval
Our experienced team handles all the required paperwork, including structural engineering plans and energy compliance documentation, submitting everything to Campbell’s building department.

4. Site Preparation & Utilities
We prepare your lot, including grading, foundation work, and utility connections—ensuring smooth integration with your existing systems.

5. Full-Scale Construction
Our licensed builders handle everything: framing, roofing, plumbing, electrical, HVAC, insulation, flooring, and finishes—using top-tier materials for long-term durability.

6. Final Inspection & Move-In
After a thorough inspection, we walk you through your finished ADU and provide tips for usage, maintenance, and renting options.

Why Homeowners in Campbell Choose Us for Accessory Dwelling Unit (ADU) Construction

  1. Local Knowledge
    We’re familiar with Campbell’s zoning laws, neighborhood character, and permit requirements—ensuring smoother approvals and well-integrated designs.
  2. Custom, High-Quality Builds
    No prefab units here—every ADU we build is crafted to fit your property, lifestyle, and aesthetic preferences.
  3. Transparent Process
    From clear pricing to open communication, we prioritize honesty and organization throughout your ADU journey.
  4. Licensed & Insured Team
    Our licensed contractors, architects, and project managers are highly skilled and backed by full insurance for peace of mind.
  5. Full-Service Project Management
    You’ll work with one dedicated team from the initial consultation through the final walkthrough, making your experience seamless and efficient.

Build Your Accessory Dwelling Unit (ADU) in Campbell with Confidence

With rising property values and growing demand for flexible living spaces, now is the perfect time to invest in an ADU in Campbell. Whether you’re thinking long-term family planning or looking to boost your property’s income potential, our team at Construction Remodeling in Bay Area is here to make it happen.

Contact us today for a free consultation and let’s bring your ADU project to life in Campbell, CA!

Here is what our customers say

Google Review
07:38 03 Jun 25
Ray's team did an AMAZING job transforming our 90s hallway bathroom into a modern-day zen haven!! We received bids from five different construction companies before deciding to go with CRIBA. Ray's quote was reasonable, had raving reviews, and overall he just feels like an honest and sincere guy. We are really glad that we made the right choice! We appreciate the crew – Nino, Alex, Noah, and Gerardo. Everyone is nice and easy to work with. They are talented and took time with the design details and were super patient with my changes and adjustments (which I appreciate most!!). Remodeling is a stressful process, given that we might be living with the permanent changes for decades. I am really grateful the crew always made sure I liked the work.

We highly recommend Ray and his team and look forward to when we do the family room and master bathroom next! Thank you CRIBA!! 🙂

P.S. fave material sources:
-Commercial grade vinyl wallpaper from Mayflowerwallpaper.com
-Integrated Corian countertop from Bay Custom Countertops
-Recessed ceiling lights with full-on and back-lit options from Amazon
-Porcelain wood tiles from Home Depot and wall tiles from Floor & Decor
Ramya Vinoth
21:52 30 Apr 25
I recently hired Construction Remodeling in BayArea for a full bathroom remodel, and I couldn’t be happier with the results. From the beginning, Ray and his team were professional, communicative, and incredibly detail-oriented. They helped me refine my design ideas and ensured everything was done on time and within budget. The craftsmanship is top-notch — the tile work, fixtures, and finishes all look stunning. What impressed me most was their cleanliness and respect for my home throughout the process. I highly recommend them to anyone considering a renovation — they deliver quality work with a personal touch.
Sheryl John
21:50 26 Apr 25
We recently had our kitchen remodeled and couldn't be happier with the results! From start to finish, Ray and team was professional, punctual, and extremely detail-oriented. He listened carefully to what we wanted, offered helpful suggestions, and delivered exactly as promised -- all at a very reasonable price compared to other quotes we received. Every corner, cabinet was installed with great precision, and they stayed on schedule throughout the project. It's rare to find a contractor who combines quality work with reliability, but this team absolutely delivered. Highly recommend if you're looking for an stress-free, beautifully done kitchen renovation!"
I recently had my bathroom remodeled and couldn't be happier with the outcome. The quality of work was excellent, and the pricing was very reasonable. The crew was highly skilled, professional, and delivered great results. I requested several changes along the way, and they were kind and flexible in accommodating all of them.

Since this was my first time doing a remodeling project, I really appreciated how helpful they were with suggestions and guidance throughout the process. Their experience and attention to detail truly made a difference.

I highly recommend Ray and his team for any remodeling work and will definitely hire them again for future projects!
Katheryn Anderson
23:38 09 Apr 25
Ray and his team did an absolutely wonderful job. From our first phone call to last inspection Ray was prompt, knowledgeable, and a great communicator. He and his team showed up exactly when they said they would and did wonderful work. The price was very reasonable. I will absolutely be calling Ray for any future home renovations! Highly recommend!
Robert Whomever
23:31 09 Apr 25
Ray and his team were prompt, courteous, helpful and honest. Most of all, they performed our bathroom remodel with the utmost care and attention for a reasonable price for the work involved. Ray is very knowledgeable and we will definitely be contacting them again for our next project. Highly recommend!
Hemang Desai
17:15 26 Mar 25
Ray great job! Thanks for all your help in completing our kitchen remodeling project in time. You were extremely professional and competent. Your team is very skilled and knowledgeable. Thanks again.
rhena renner
04:44 17 Feb 25
Thank you to Ray and most especially to his team who did the demo and installed our new countertop. Ray walked me through the process and he recommended stores of where I can purchase the slabs and other materials for my kitchen. They did an amazing job and I’m grateful! Thank you once again!
guy basilashvili
23:06 03 Feb 25
I recently had my kitchen remodeled with CRBA and I love it! The new cabinets look great, and the countertops are so nice. It feels way more spacious now. The workers were friendly and did a good job. Overall, I'm really happy with how it turned out!
Natalie V
02:48 31 Jan 25
I recently had my kitchen remodeled by Bay Area Remodeling, and I couldn’t be more impressed. Ray and his team were fantastic, and the quality of their work is outstanding. My kitchen looks completely transformed. I highly recommend them!

Get a Free Accessory Dwelling Unit (ADU) Consultation in Campbell

Whether you’re ready to start or simply exploring options, we’d love to chat. Book your free consultation today.