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ADU Construction Experts in Crystal Bay
We build accessory dwelling units in Crystal Bay that are designed for mountain properties, lake living, and long-term functionality.
4.9/5 rating from 56+ online reviews.

Thoughtfully Designed ADUs in Crystal Bay, CA
At Sidex, we build custom ADUs that are tailored to the way people actually live in mountain and lake communities. From maximizing smaller lots to designing around elevation changes and seasonal weather, our team approaches every project with practical experience and attention to detail.
As experienced ADU contractors in Crystal Bay, we manage everything from planning and design coordination to permits and construction. Our goal is to make your accessory dwelling units project feel smooth, organized, and built to last.
If you’re planning an ADU Crystal Bay project, Sidex delivers craftsmanship that blends beautifully with your property and the surrounding environment.
Complete ADU Services in Crystal Bay

Detached ADUs

Attached ADUs

Granny Flats

Backyard Cottages

In-Law Suites

Garage Conversions

Prefab ADUs
Complete ADU Services in Crystal Bay

Detached ADUs

Attached ADUs

Granny Flats

Backyard Cottages

In-Law Suites

Garage Conversions

Prefab ADUs
Complete ADU Services in Crystal Bay

In-Law
Suites

Garage Conversions

Prefab ADUs
Structural Excellence & Outdoor Integration in Crystal Bay
We have transformed properties in Crystal Bay and South Lake Tahoe with precision, seamless integration, and thoughtfully designed outdoor living spaces.
EXCELLENT
Based on 38 reviews
Posted on Google![]()
Tatyana PTrustindex verifies that the original source of the review is Google.
Posted on Google![]()
Vivi BabenkoTrustindex verifies that the original source of the review is Google.
My grandparents backyard deck had taken a beating over the years, especially from all the snow and rough weather. It was definitely time for some love, and Sidex really came through for! What stood out most was the crew and how they treated my grandparents like family and were genuinely so kind throughout the whole project. Really glad we chose them!Posted on Google![]()
Sara YarmolyukTrustindex verifies that the original source of the review is Google.
Extremely helpful employees and truly have honest work and craftsmanship.Posted on Google![]()
Valya StepanovTrustindex verifies that the original source of the review is Google.
I can’t say enough good things about Sidex Siding & Decking! From the first phone call to the final walkthrough, the entire experience was outstanding. The team was professional, punctual, and incredibly knowledgeable. They took the time to answer all of my questions, communicated clearly throughout the project, and paid close attention to every detail. The quality of their workmanship exceeded my expectations, and the finished deck looks absolutely amazing. They treated my home with respect, kept the work area clean, and completed everything on schedule. It’s rare to find a company that truly delivers on its promises, but Sidex Siding & Decking did exactly that. If you’re looking for a trustworthy, skilled, and reliable contractor, I highly recommend them. I couldn’t be happier with the results and will definitely use them again for future projects. Five stars all the way!Posted on Google![]()
Max GatsmanyukTrustindex verifies that the original source of the review is Google.
Fast and professionalPosted on Google![]()
Vince CartersonTrustindex verifies that the original source of the review is Google.
Andrey and Nate were very helpful, would work with Sidex again. I am glad everything went as smooth as they said it would.Posted on Google![]()
Sava VashchukTrustindex verifies that the original source of the review is Google.
We recently hired SIDEX to completely replace the old, worn-out siding on our home and we could not be happier with the results. They gave us a highly competitive and transparent quote with no hidden fees.Posted on Google![]()
Rita SnizhkoTrustindex verifies that the original source of the review is Google.
We couldn’t be happier with how our new deck turned out! From the very beginning, the whole process was so easy, and the Sidex Construction team was amazing to work with. They really listened to what we wanted and brought our vision to life exactly how we imagined it! Our outdoor space has completely transformed, and it’s now one of our favorite places to relax. It’s exactly what we had in mind for our home, and we honestly couldn’t have asked for a better result. We highly recommend Sidex Construction to anyone looking for quality work!Posted on Google![]()
Amanda KilgoreTrustindex verifies that the original source of the review is Google.
Had a great experience working with Sidex. Nate was super helpful during the in-person site visit and took the time to explain everything clearly without making us feel rushed or pressured. Andrey was also very helpful with scheduling and keeping everything organized throughout the process. The whole team was professional, easy to work with, and communication was solid from start to finish. Really appreciated how smooth everything went. Would definitely recommend Sidex to anyone looking for quality work and good customer service.Posted on Google![]()
Marjorie SiemsenTrustindex verifies that the original source of the review is Google.
Tim did a wonderful job fixing a leak on my skylight windows. Totally professional and very detailed in his work. I would definitely consider him for future work!
FAQs Related to ADUs in Crystal Bay
What is an ADU in Aptos?
An ADU, or accessory dwelling unit, is a secondary residential living space built on the same property as a primary home.
Can I build an ADU in Crystal Bay?
Yes. Many homeowners in Crystal Bay are adding ADUs for guests, family use, rental income, or expanded living space.
Do you handle permits and planning?
Absolutely. Our team manages planning support, permits, and construction coordination for your ADU project.
What types of ADUs do you build?
We build detached ADUs, attached ADUs, garage conversions, granny flats, backyard cottages, and prefab ADUs.
Are ADUs suitable for mountain properties?
Yes. We design ADUs specifically around local terrain, weather conditions, snow loads, and property layouts common in Crystal Bay.
How long does ADU construction take?
Timelines vary depending on project complexity and permitting, but we provide a clear schedule before construction begins.




