Seamless ADU & Basement Conversions, from Concept to Comfort
Full-service ADU and basement conversions that transform unused space into beautiful, functional living areas. From design to construction, we handle it all—no hassle, no mess, just expert craftsmanship from the #1 trusted ADU builders and basement remodeling contractor company in Seattle WA.

Over 11,000 Homes Remodeled

Industry-Best, Long-Term
Warranties

Durable, High-Quality Materials & Remodeling Experts

Complete World-Class Installation & Clean-up

Free Expert Design Services & Consultation
Financing Available on Home Improvement Jobs
If you want build yourself a brand new ADU, or to convert your old unused basement into a cool living space we can help. We have a wonderful financing program and can point you in the right direction for your project from A to Z. Call us today to hear about all of your options.
We make it simple for you.
From Start to finish, LYD Construction has your dream ADU Covered whether it’s a basement conversion or an additional structure. All you have to do is get started with a free design consultation
- Schedule a FREE Design Consultation
- Customize & Approve your Design
- Get Financing Approved if need be
- Begin your project with our trusted project manager, our team of licensed experts are quick, skilled and clean.
START YOUR ADU PROJECT TODAY!
Transform your backyard into opportunity with LYD Construction’s expert Accessory Dwelling Unit (ADU) services. Whether you’re building a rental unit, a guest house, or a private retreat for family, we make the process simple from start to finish.
Our design-build team helps you create a fully functional and stylish living space that fits perfectly within your property and local zoning requirements. We handle permits, design, construction, and finishing details — delivering a beautiful, code-compliant ADU that adds value and versatility to your home.
From garage conversions to detached backyard units, we bring your vision to life with expert craftsmanship and attention to detail — all while staying on schedule and within budget.
Expand your home, generate income, and add lasting value — start your ADU project today.
START YOUR BASEMENT CONVERSION PROJECT TODAY!
Don’t let your basement go to waste — turn it into a vibrant, livable space with LYD Construction. Our basement conversion specialists transform dark, unused areas into beautiful extensions of your home — whether it’s a rental unit, home office, gym, or entertainment suite.
We take care of everything from waterproofing and insulation to permits and design, ensuring every square foot meets safety and comfort standards. Our experienced builders maximize your basement’s layout, bringing in natural light, quality finishes, and modern functionality.
At LYD Construction, we make the process seamless — fast timelines, clear communication, and stunning results that increase your home’s comfort and resale value.
Reimagine your basement. Reinvent your home.
TURN YOUR GARAGE INTO A BEAUTIFUL GUEST HOUSE
Ready to transform your unused garage into a stunning, fully livable guest house? At LYD Construction, we specialize in designing and building garage conversions that combine smart space planning, elegant design, and exceptional craftsmanship.
Whether you want to create a private suite for family, a rental unit for extra income, or a peaceful backyard retreat, our team handles every detail — from architectural design and permits to plumbing, insulation, and finishing touches.
We take pride in turning underutilized spaces into beautiful extensions of your home that add value, comfort, and versatility. Our experts work with you to customize layouts, select materials, and ensure your new guest house is energy-efficient, code-compliant, and designed to last.
Transform your garage into a modern, welcoming living space — designed and built by LYD Construction.
Over Thousands of Happy Home Improvement Customers
Start Your ADU project today!
Remodeling your basement or building an ADU should be a stress free process. We will make it easy and effortless.
Have questions?
Get in touch!
Please contact us via any method you prefer. We are happy to serve you.
Posted on Beverly Coghlin8 April 2026Trustindex verifies that the original source of the review is Google. We hired LYD for an outdoor project that included installation of retaining wall., fencing .replaced lawn with hardware tiling 100% LYD came thru.. very good communication for the duration of the project. Also installed a garden /garbage seeds very nice.. Highly recommend this company great. Don/Bea west SeattlePosted on Tj Santoro7 April 2026Trustindex verifies that the original source of the review is Google. LYD construction was greatPosted on Reba Swartz20 February 2026Trustindex verifies that the original source of the review is Google. I am so very pleased with my new bathroom by LYD. My house is almost 100 years old and has been through a LOT of DIY mistakes. LYD took everything down to the studs repairing a surprising amount of hidden issues, making everything new, functioning and exactly what I wanted. I purchased the materials with their guidance and specifications so there was no mark-up which really helped to keep costs down while also making sure I got the tile and fixtures I wanted. Other companies required full design services and said what I wanted would cost at least twice as much or they didn't bother to ever call me back. As a facilities and project manager in my professional life, I have a lot of experience with contractors and the team I worked with at LYD Construction did a fantastic job while also having their hearts in the right place. For anyone looking for remodeling help, make sure you are clear about what your priorities are, put everything in writing so you and your contractor always have something to refer to and make sure you have the same understandings, and make sure this company is one of the ones you interview for your project.Posted on Andy Lin17 February 2026Trustindex verifies that the original source of the review is Google. Arie and Stephen were amazing to work with. LYD repaired the decks on my apartment building. They did an amazing jobs. Would recommend to anyone looking for quality service”Posted on Jack Johnson20 December 2025Trustindex verifies that the original source of the review is Google. We’ve had the pleasure of working with LYD construction several times. Codie is fantastic to work for. We would come out and pickup construction debris from their site to ensure everything was kept clean and tidy. I always admire contractors that take site cleanliness seriously for both safety, attention to detail and quality experience.Posted on Mindy Westerman18 December 2025Trustindex verifies that the original source of the review is Google. ⭐️⭐️⭐️⭐️⭐️ I could not be happier with my bathroom remodel and with the entire team of LYD. From start to finish, their professionalism, craftsmanship, and attention to detail were exceptional. The quality of the work truly exceeded my expectations. What stood out most was the communication. I always knew who would be coming, when they would arrive, and what work would be happening each day. That level of clarity made the entire process smooth and stress-free. This project was especially meaningful to me during a very difficult life transition, and the team handled it with care, respect, and thoughtfulness. They didn’t just remodel a bathroom — they helped create a space that feels calming, restorative, and truly like home. I’ve already recommended them to a coworker and shared their information with my real estate agent, and I will continue to refer them to anyone looking for high-quality work. They will absolutely be my first call for future projects. I’m incredibly grateful and couldn’t recommend them more highly.Posted on Jyo25 October 2025Trustindex verifies that the original source of the review is Google. ✨ 5-Star Review for LYD Construction ✨ I recently completed a home remodel with LYD Construction that included a full kitchen renovation, new built-in cabinets and shelving in my family room, a remodeled powder room, and a custom coffee bar in my formal dining room. In the kitchen, we added a large island, removed existing closets, and replaced them with beautifully designed pantries, replaced flooring, added lighting, added a microwave in the island, installed a non-standard hood, added tile backsplash... — completely transforming the space. I had been working on my vision for a while and met with several contractors before choosing LYD. From my first meeting with their team, I knew they were the right fit. When I described what I envisioned, it felt like they were completely in sync with me. They took the lead with confidence and delivered exactly what I had imagined — beautifully and efficiently. The entire project was completed in just four weeks. From collaborating with the cabinet and countertop designers to working with the office staff and Lior, everything went smoothly and communication was top-notch. I’m thrilled with how it all turned out and highly recommend LYD Construction to anyone looking for a team that listens, communicates clearly, and brings your vision to life with precision and care.Posted on D Davies16 August 2025Trustindex verifies that the original source of the review is Google. Lior and his team were absolutely incredible! From the quote to project completion, everything was fast, efficient, and seamless. I had a lot of work needed with everything in my house original from the 1980s. My kitchen renovation (which included a full gut and removing a wall) turned out even better than I imagined. I was so happy with the results that I immediately signed on to have them do my master bathroom, even though I originally planned to wait a year or two. What really stands out is their responsiveness and care even after the projects were done. When I noticed a bathroom issue, Lior and his team were back right away to address everything. More than a year later, when I spotted a cracked tile (high traffic area), they once again responded immediately and took care of it without hesitation. I couldn’t be happier with the work and the service — truly above and beyond. Highly recommend! (Special shoutout to Alex - his tile work is truly a work of art and his knowledge is irrefutable).Posted on Francis Classe5 August 2025Trustindex verifies that the original source of the review is Google. We purchased a 1962 mid-century house with lots of custom woodwork, baseboards, wainscotting, etc. It hadn't been remodeled in quite a long time, and really needed some attention and love. We decided on the home originally because we wanted it updated while preserving the fantastic historical elements. After quoting out with several different contractors, we went with LYD not primarily because of cost, but because of the relationship. LYD was willing to work with us and let me do some of the work in certain places, and add on additional scope where needed. Their team was absolutely excellent - some of the tile work I requested was unusual in that I wanted to use scavenged tile from countertops to extend the tile on the floor, and you absolutely cannot even tell the old from the new tile. They fixed and touched up the poor paint job that the sellers had done, worked with us from the beginning to execute our vision, and made many recommendations to improve on what we had in mind. Towards the end of the project, a friend asked us, "There's always a horror story associated with every remodel - what's yours?" We couldn't answer because we couldn't think of a single thing that went wrong. We're thrilled with our newly remodeled home and look forward to enjoying it for many years to come.



