We specialize in turning underused spaces into beautiful, livable ones, whether it's a basement remodel, a garage ADU conversion, or a ground-up DADU. From planning to final walk-through, we’re with you every step of the way.
Basement, ADU, or DADU in the works?
What we do
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Basement Remodeling
More space, less stress.
Turn your basement into a legal, livable part of your home and let us handle the tricky stuff.Sometimes the best direction to go is down
Our goal is to help you make the most of the space you already have. Whether your family is growing, you're working from home and need a dedicated office, or you're ready to upgrade an outdated basement, we’ll help you transform it into something functional, comfortable, and built to last. -
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DADU Builds
Add a fully detached home to your property
A detached accessory dwelling unit (DADU) is a major investment, but the process doesn’t have to feel overwhelming. Whether you already have permits in hand or you’re just starting to explore the possibilities, we’ll guide you every step of the way.From red tape to ribbon cutting
We act as your single point of contact throughout the project. It starts with a careful evaluation of your property and a clear look at what’s possible. From there, we connect you with architectural designs tailored to your goals, then break the project into manageable phases, handling the details, coordinating the team, and keeping you in the driver’s seat from start to finish. -
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ADU Conversions
Add a rental. We’ll handle the red tape
Turn your basement, attic or garage into into a crisp and rentable part of your home. We’ll handle the building code, permitting, and all aspects of construction to help you cross the finish line with a fully permitted ADU.Let us do the headscratching
Sometimes it’s hard to know where to start. We collaborate with the best architects, designers, and engineers to make sure your project checks every box from zoning to final inspection. Our goal is to build a space that you’ll be proud to call part of your home.
Featured Projects
Beacon Hill Full Home Remodel
This Beacon Hill home was remodeled to bring out its mid-century character while making it comfortable for modern family life. With two updated bathrooms, a refreshed kitchen, refinished hardwoods, and over 1,000 sq. ft. of natural stone, every space was designed to balance style with practicality. Custom millwork, doors, and a new fireplace façade tie the whole home together with a crisp feel.
Click to explore the project.
Lake City ADU
This detached garage ADU transformation turned an underused space into a bright, liveable home. We re-framed walls to create a functional layout, installed durable LVP floors, and added new cabinetry, doors, and counters for everyday ease. A full bathroom with fresh tile brings a clean look, and thoughtful finishes throughout make the ADU both practical and inviting.
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Bryant Craftsman Full Home Remodel
This 2,000 sq. ft. Bryant home was reimagined for contemporary living with a complete transformation inside and out. From refreshed bathrooms and custom kitchen finishes to new oak hardwoods, millwork, and a signature dutch door, every detail was designed to blend function with cutting edge design.
Click to explore the project.
Central District Kitchen Remodel
This Central District kitchen remodel blends natural warmth with modern function. We paired custom Douglas Fir millwork and maple butcher block counters with new cabinets and a built-in farmhouse sink, creating a timeless gathering space. Heated tile floors add everyday comfort, while custom butcher block details in the breakfast nook tie the design back to the home’s natural surroundings.
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Testimonials
Amazing job building a beautiful kitchen. Super friendly and helpful, finished on time and on budget. Would absolutely work with Jake again.
Nate - Central District
We had never worked with contractors before, and we chose Sender because they were personable, willing to answer all of our preliminary questions, and after they laid out expectations for the project/bid.
They are kind, honest, and provide a great service. Hopefully we can work with them again one day!
Nick, Beacon Hill
Jake and his crew did amazing work with our basement remodel and bathroom remodel. He was very responsive and worked in a timely professional manor. He did amazing work remodeling our bathroom placing tile floor, building vanity and fixing some wall damage.
Amy, West Seattle
Let's Work Together!
Whether you're exploring an ADU, basement conversion, or full renovation, we’re happy to hear from you. Reach out and let’s get started.
About Sender
Jake Campbell
Builder, General Contractor
Sender Residential is a Seattle-based general contractor specializing in basement renovations, ADU conversions, and DADU construction. With over 10 years of experience in residential construction and 50+ projects under our belt, we help homeowners transform underused or unfinished spaces into legal rentals, expanded living areas, and fully detached backyard units.
We grew up here, and we care about putting down deep roots. We’re committed to helping growing families expand their living space, extending our region’s housing capacity, all while building in a way that stewards our natural environment. Our work is guided by trust, communication, and relationship. Every client deserves to feel heard, valued, and respected, and we handle challenges with care and earnest problem-solving.
Whether you already have a full set of plans or are just starting to explore your options, we guide you through the entire process, from design and permitting to construction, always prioritizing honest communication, transparent pricing, and collaborative planning. Our goal is to make the construction process smooth, supportive, and empowering for every homeowner.