Modular and ADU Builder You Can Trust.
We handle permits, foundations, and the full build for modular homes, tiny homes, and ADUs across the Pacific Northwest — call (360) 318-3984 to talk through your site and timeline.
Serving the Pacific Northwest
Call (360) 318-3984Get Your Free Estimate
About Genesis Buildings
Genesis Buildings is a general contractor based in Winlock, WA, focused on one thing: helping people put down roots with a home that fits their life. We permit, build, and deliver tiny homes, modular homes, and ADUs—each one set on a proper foundation and built to last.
Whether you're dreaming of a compact home to call your own, a modular build for growing needs, or an accessory dwelling unit for family, guests, or rental income, we walk the whole path with you. From the first conversation to the final walkthrough, we handle the details so you don't have to piece it together on your own.
What Our Customers Say
- Kylee Hintz★★★★★
100% would have never purchased my 3 sheds if it weren't for Crissy Winward's excellent customer service! Crissy designed two outdoor dog kennels for me in 2024 - custom designed, work efficiently here two years later. My proudest purchase(s) to date. When I had a problem, Crissy was there and sent out two service men to repair slight damages from a design flaw in the first few months. Super thankful for the builders and repairmen as well for their punctuality, urgency, and professionalism. You were great! From purchase to aftercare, everything was seamless thanks to Crissy's efficient networking and communication. I recently just purchased an RTO 10x12 shed that matches my buildings for a tack room. Again, would not have even known about it had Crissy not hand selected it for me. I was specifically looking for something ready to deliver, with a certain budget in mind for my new tack room. I hadn't even reached out - it was like Crissy read my mind and sent it to me on a random afternoon! My relationship built with Crissy during the last two years will last a lifetime and I will be a lifelong customer thanks to her! Thank you, Genesis Outbuildings for your awesome sheds!
- Bobby Ball★★★★★
Genesis Building built a 24x36 pole barn with concrete slab for me. My experience with them was great from start to finish. They were easy to work with on the details and quick to address any concerns I had with the process or product. Their engineered plan passed through the county permit process with no problems and the quality of materials used was great. Their crew was very engaging and gave great attention to detail in both the construction and in keeping the construction site clean. Josh was my primary point of contact and oversaw the job. He is great at communicating and kept me in the loop throughout the build. He was able to answer all my questions and followed through on everything he said. They definitely went the extra mile for me and I am thrilled with the final product which will be my dream wood shop! I have no reservation in recommending them.
- Melissa Toney★★★★★
Joas was absolutely wonderful to work with. I had tried other companies who were trying to force me to buy (prior to having a permit in hand) or else they would not honor their quote provided days before. I could not believe how patient and understanding he was with all my last minute changes. The county gave me a really hard time getting my permit so I opted to go below 200 sq ft and actually saved a HUGE amount doing so. So again there was another change and Joas never batted an eye. He took so much time providing me with multiple quotes in different sizes to get me as close to my budget as possible. He responded quickly and even on his own private time. I truly appreciate him and I will definitely go through him for my next building in the VERY near future. TJ delivered my building today and he was also a pleasure to work with. My building had taller walls so it wouldn’t fit under my powerlines but that didn’t stop him. He unloaded the building at the bottom of my nearly 900 foot driveway and used a really cool machine to drive it to the very top. He made things look EASY! He was polite, kind, and VERY easy to work with. I cannot thank him enough for doing such a great job. It was a great experience working with these family men and I will NEVER go through anyone else because I just do not think any other company can compare. Thank you from the bottom of my heart for turning my dreams of working from home into a reality. I cannot tell you how many happy pups there will be getting massages in this BEAUTIFUL building!
- James H★★★★★
I recently had a shed moved by TJ. His communication was great, he showed up on time (with a really cool trailer), did a great job loading my shed and moving it to my new house. My shed was not a fantastic or particularly sturdy shed, but he managed to move it without damaging anything. The price was very fair and much less than another company I spoke to. I may not ever need another shed moved, but if I do Genesis buildings will be my first call. I would also not hesitate to call them for a new shed in the future.
- Mr. McMartín★★★★★
Daryl and the whole team at Genesis were a pleasure to deal with! I’m in the construction industry and they were very professional to deal with, it was exactly 3 weeks from placing the order to delivery. The quality was also way above our expectations. The delivery went so smoothly and quickly… I can’t say enough about how great the whole experience was.
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Why the Pacific Northwest Chooses Genesis Buildings
The things that actually change how a job goes.
We pull the permits
Permitting is the part most builders leave to you. We handle the applications and the plan review with the city or county so your building is approved before it arrives.
We pour the foundation
A building needs something to sit on. We prepare and pour the foundation as part of the job, so you are not hiring a separate contractor and coordinating two schedules.
Built in Winlock, delivered to your site
We build here and deliver to your property, which keeps the schedule and the quality in one pair of hands from the first drawing to the day it lands.
Our Services Across the Pacific Northwest
Free estimates and honest recommendations across the Pacific Northwest.
ADUs
We handle permits and construction of accessory dwelling units with foundations, delivering a complete additional living space on your property.
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Modular Buildings
We handle permitting, construction, and delivery of modular buildings placed on foundations at your property anywhere in the Pacific Northwest.
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Tiny Homes
We build permitted tiny homes on foundations, handling the process from design through delivery across the Pacific Northwest; call (360) 318-3984.
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Foundations
We pour and prepare code-compliant foundations for your tiny home, modular home, or ADU anywhere in the Pacific Northwest.
Learn MoreNot sure which service you need? Tell us about the job and we'll point you to it.
Utility connections, handled
Getting a building onto its site is only half the job. We dig the trenches and make the utility connections for your modular home, tiny home or ADU, so it is ready to live in rather than waiting on another contractor.

Recent Work
Real jobs — photographed on completion.






+ 3 more projects
Areas We Serve Across the Pacific Northwest
Short drive times, and the same standards in every city.
Get a free estimate anywhere in the Pacific Northwest
Free estimate, written quote, no obligation — and a straight answer about what your home actually needs.
- Serving the Pacific Northwest