
Detached ADU Specialists
Maksymov Brownstone LLC is the DADU builder Sammamish homeowners turn to for reliable results at every stage of a detached accessory dwelling unit project. We design and construct standalone backyard homes shaped around your property and long-term goals.
From the first consultation to final handover, our experienced team manages each phase with precision and real knowledge of Sammamish local conditions.
Our Expertise
Adding a detached accessory dwelling unit to your Sammamish property is one of the smartest upgrades available to homeowners today. It unlocks more usable space for a private office, guest quarters or stable rental income. This is more than a practical improvement — it is a meaningful investment in your property's long-term future.
Our DADU builders bring hands-on local knowledge to every Sammamish project. As an experienced Sammamish DADU contractor, we navigate zoning requirements, permit workflows and site limitations with confidence. Each build is managed by a licensed team committed to code compliance, quality construction and results that last.
We take ownership of the full process from initial planning to final sign-off. Every step stays transparent, well-coordinated and on schedule. That consistent approach is how we earn the trust of Sammamish homeowners on every DADU project we complete.
What We Build
Expert DADU Home Transformation Services in Sammamish — when homeowners search for a reliable DADU builder "near me", they choose us for consistent quality and code compliance. We deliver detached accessory dwelling unit solutions tailored to each Sammamish property.
Modern Backyard Cottages
Standalone cottage-style structures designed for Sammamish lots — built for everyday comfort and long-term durability.
Two-Story Detached Units
Custom two-level floor plans that maximize vertical space on compact Sammamish lots without expanding the footprint.
Rental-Ready Backyard Homes
Backyard homes in Sammamish built from day one with rental performance in mind — functional, code-compliant and income-ready.
Eco-Friendly DADU Designs
Energy-efficient Sammamish DADU builds using sustainable systems that reduce operating costs and meet local green standards.
Detached Home Office Suites
Purpose-built backyard office spaces in Sammamish — quiet, insulated and fully separated from the main residence.
Garage-to-DADU Transformations
Full garage conversion into livable DADU space in Sammamish — permits managed, code-compliant and professionally finished.
Flexible Layout Options
Adaptable DADU layouts built around Sammamish lot constraints — every square foot planned and purposefully used.
Fully Custom Backyard Living
Completely bespoke backyard living solutions in Sammamish designed around your vision, lifestyle and long-term property goals.
How It Works
We begin with a thorough visit to your Sammamish property to evaluate the layout, access points and available utility connections. Our team confirms project feasibility and provides a clear early cost outline.
Our designers create detailed custom plans and straightforward 3D visualizations based on your Sammamish lot and preferences. Every design decision is made to complement your existing home and neighborhood.
As your Sammamish DADU contractor, we manage all permit applications and coordinate with the city on your behalf. Your detached accessory dwelling unit project stays compliant and on schedule from day one.
Our DADU builders in Sammamish oversee every construction phase from foundation through finish. We maintain a clean, organized site and minimize disruption to your household throughout the entire build.
Once all final inspections and approvals are complete, we hand over your finished Sammamish DADU. The space is fully ready for immediate use — whether for personal living, family or rental occupancy.
Portfolio






Reviews
"Maksymov Brownstone built our backyard DADU from the ground up. The process was smooth, the team was easy to communicate with and the result exceeded our expectations."
James K.
"I was nervous about the permit process but they handled everything. Our detached unit is beautiful, fully compliant and already generating rental income."
Sarah M.
"Professional from start to finish. They knew exactly what our lot could handle and designed a DADU that fits perfectly. Couldn't be happier."
Tom R.
Where We Work
We build detached accessory dwelling units throughout King County. Find your city below for local DADU building services.

About Us
Maksymov Brownstone LLC is a family-owned residential construction company with over 17 years of experience delivering results homeowners rely on. As a trusted DADU builder in Sammamish, our team manages every project from feasibility review through final completion. We are fully licensed and bonded, providing Sammamish homeowners with confidence at every phase.
We specialize in ground-up detached unit construction and bring deep knowledge of site conditions, local zoning and Sammamish-specific permit requirements. Our approach is straightforward — build quality DADU homes in Sammamish that align with your property, serve your needs and hold long-term value.
FAQ
Planning a DADU project in Sammamish involves many decisions around budget, timeline and local regulations. Here are the most common questions Sammamish homeowners ask before getting started.
How much does it cost to build a DADU in Sammamish?
The cost of a detached accessory dwelling unit in Sammamish depends on the size, design complexity and how utilities need to be connected to the site. No two properties are identical, which means pricing always requires a site visit. As your Sammamish DADU builder, we evaluate your lot, listen to your goals and prepare a transparent, itemized estimate so you can plan your budget with full clarity from the start.
What are the requirements for a DADU on my Sammamish property?
Each Sammamish property must meet specific rules before a DADU can be permitted. These typically involve minimum lot size, setback distances from property lines, height restrictions and allowable lot coverage. As your experienced Sammamish DADU contractor, we review your existing setup, evaluate available space and verify zoning compliance before committing to a design. This ensures your project moves forward on solid ground.
How long does a DADU construction project take in Sammamish?
Timelines in Sammamish vary based on the scope of your project. Simpler builds with straightforward permits can move quickly, while larger or more complex designs take longer through design, approval and construction phases. Our Sammamish DADU team keeps every phase organized and clearly communicated so you always know where your project stands and what comes next.
Why should I choose a local DADU builder near me in Sammamish?
Working with a DADU builder who operates in Sammamish every day means you get a team that already knows the local permit process, zoning requirements and inspection standards. This firsthand knowledge prevents delays, reduces back-and-forth with the city and leads to a faster, smoother build. When Sammamish homeowners search for a builder "near me", local experience consistently produces better outcomes.

Free site consultation — no pressure, just honest answers about your property.
Leave a request
Contact us
maksymov.brownstone@gmail.com
Phone
(425) 800-7663
Mon – Fri
9 am – 6 pm
Saturday
9 am – 1 pm