Backyard Cottage Builders in Northern California
We are the backyard cottage builders who turn unused space to something meaningful. You’ll get beautiful, functional backyard cottages that feel like home.
4.9/5 rating from 56+ online reviews.
Smart Backyard Living Starts Here
A backyard cottage is more than just a small structure, it’s a fully livable space designed for comfort, privacy, and flexibility. Think of it as a small house in the backyard that works for your lifestyle, whether that means hosting family, earning rental income, or creating a peaceful escape just steps from your main home.
At Sidex, we build everything from custom designs to prefabricated guest cottage options, helping you find the right balance between speed, style, and long-term value.
Complete Backyard Cottage Services
Custom Backyard Cottage Design
We create tailored backyard cottage designs that fit your needs. Whether you’re exploring backyard cottage ideas or starting from scratch, we design spaces that maximize light, layout, and livability.
Ground-Up Backyard Cottage Construction
Our team handles full construction of your backyard house, from foundation to finishes. Every build is done with durability, energy efficiency, and real-life usability in mind.
Prefab & Guest Cottage Options
We offer prefab and prefabricated guest cottage options, including tiny backyard homes and guest house builds. These reduce timelines while maintaining quality and design appeal.
Built with Precision, Designed for Real Living
Explore our projects to see how we build functional, durable, and visually seamless structures across Northern California.
How We Build Your Backyard Cottage
Consultation & Planning
We start by understanding how you want to use your space, whether it’s a rental, guest house, or private retreat, and explore the best backyard cottage plans for your property.
Step 1
Design & Permits
Our team develops detailed layouts and handles approvals, ensuring your ADU cottage meets local building requirements and fits seamlessly on your lot.
Step 2
Construction & Installation
We build your backyard cottages on-site or install prefab units, depending on your choice. Every detail is handled with precision, from structure to finishes.
Step 3
Final Walkthrough
We complete inspections, finalize all details, and hand over a ready-to-use small backyard house built for comfort and long-term use.
Step 4
Backyard Cottage Builders Across Northern California
We design and build backyard cottages across key regions, serving over 57 locations.
The Bay Area
From San Francisco to San Jose, we create modern backyard housing solutions that maximize property value and usable space.
South Lake Tahoe
We build durable backyard small house structures designed for colder climates, with proper insulation and weather-resistant materials.
Sacramento Region
Serving Sacramento and surrounding areas, we deliver practical and stylish backyard house solutions for families, rentals, and flexible living.
Backyard Cottage FAQs
What is a backyard cottage?
A backyard cottage is a small, independent living space built on the same property as your main home, often used as a guest house, rental unit, or private retreat.
Are prefab guest cottages worth it?
Yes. Prefab guest cottage options are faster to install and can be more cost-effective while still offering modern design and durability.
How big can a backyard cottage be?
Size depends on local regulations, but most backyard tiny homes and cottages are designed to maximize space efficiently within allowed limits.
Can I rent out my backyard cottage?
In many areas, yes. A guest house for the backyard can be used for rental income, depending on zoning and local rules.
Do I need permits to build a backyard cottage?
Yes. Whether it’s a custom build or prefabricated guest cottage, permits and approvals are required. We handle this process for you.
What’s the difference between a backyard cottage and an ADU?
A backyard cottage is a type of ADU cottage, a fully functional living unit separate from the main home.
Trustindex verifies that the original source of the review is Google.
Elizabeth Neilsen2024-07-15We needed some deck repairs and had Sidex out to give us a bid and suggestions. Best choice ever. They spent time to evaluate necessary repairs and gave us estimates. Contracted for the work. Workers were great. Very efficient and tidy. So happy with the results. Thank you Sidex. ❤️Trustindex verifies that the original source of the review is Google.Sruthi gn2024-06-15Thank you Sidex for an excellent work. They built our 12x12 deck in one day. Such a great team. We enjoyed the work .Trustindex verifies that the original source of the review is Google.Joshua K2024-06-02I recently had my dock replaced by Sidex Siding and Decking, and we couldn't be happier with how it turned out! I reached out to Andrey, and he and his team did an amazing job from start to finish. They listened to our vision for the dock, sourced high-quality materials, and maintained excellent communication throughout the process. The entire project was completed within a week, and the workmanship is outstanding. We are thrilled with how it turned out and would highly recommend Sidex Siding and Decking to anyone. Thank you, Andrey and team, for your exceptional work!Trustindex verifies that the original source of the review is Google.Rand Martin2024-05-16Excellent and meticulous work.Trustindex verifies that the original source of the review is Google.Barry Cohen2024-05-14Andrey and his team repaired a fence for me recently and I could not be happier with the work. I know he went out of his way to keep on schedule to do that work on the day upon which we agreed even though it was inconvenient for him. The team arrived on time, did the work efficiently and I believe for a reasonable price. The end product, the repair, was excellent. I would use this company again.Trustindex verifies that the original source of the review is Google.Nicole2024-05-13I am ???? grateful for this wheelchair ramp. They worked so hard to get it done in one day, so I could take my brother to the doctor by myself without using medical transportation. This is the first company that heard my needs and made it happen. I recommend Andrey! They are gentle, kind, and professional. Outstanding!Trustindex verifies that the original source of the review is Google.Elisey Borisov2024-05-09Thank you Sidex. Great team, easy to work with. Customer service was outstanding, answered all of my questions quickly, made me feel comfortable throughout all stages of the process. Great job guys, with new windows and siding my house looks brand new!Trustindex verifies that the original source of the review is Google.Any Way Moving2024-05-09I recently had the pleasure of hiring Sidex for siding installation on my home, and I couldn't be more impressed with the results. From start to finish, the entire process was seamless and professional. Firstly, the team at Sidex demonstrated excellent communication skills, promptly addressing all my inquiries and concerns. They provided a detailed quote outlining the scope of work and timeline for completion, which was very helpful in setting expectations. When it came to the installation itself, the craftsmanship exhibited by the crew was outstanding. They worked diligently, paying close attention to detail to ensure a flawless finish. The siding not only looks beautiful but also feels sturdy and durable, providing added protection to my home. Moreover, the project was completed within the agreed-upon timeframe, without any delays or unexpected issues. The crew was respectful of my property, keeping the work area clean and tidy throughout the process. Overall, I am beyond satisfied with the quality of work delivered by Sidex. Their expertise, professionalism, and attention to detail have truly transformed the exterior of my home. I would highly recommend their services to anyone in need of siding installation or any other home improvement projects.Trustindex verifies that the original source of the review is Google.Ariel Hernandez2024-05-09Absolutely killed it! From our first interaction, and up to the final moments of the project they showed true professionalism and good quality work with a smile on their face! I couldn’t recommend a better company, thank you!Trustindex verifies that the original source of the review is Google.Angel Solis2024-05-09Trusted company. Whatever your needs maybe be, regarding siding and decking, be sure that you can you trust Sidex.
