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ADU Construction Renton

Maksymov Brownstone LLC provides ADU construction Renton homeowners can use to add practical living space, improve property function and plan for future needs. From garage conversions to detached backyard units, our team builds ADUs with clear planning, durable materials and reliable project management. Leave a request to schedule a free consultation.

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Practical ADU solutions for Renton homes

Renton ADU construction is a smart option for homeowners who want more usable space without moving away from the Seattle and Eastside area. An accessory dwelling unit can support extended family, create a private guest suite, provide rental potential or make room for a quiet home office.

Renton has a wide range of properties, from Mid-Century homes in Kennydale to Craftsman houses near Downtown Renton and growing residential areas around Fairwood, Fairwood Firs, Highlands and Benson Hill. Because each neighborhood has different lot conditions and home styles, ADU planning should be based on the actual property, not a generic layout.

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Custom ADU building services

As an ADU contractor Renton homeowners can rely on, Maksymov Brownstone LLC helps manage the project from early planning through construction and final inspection. We work with design coordination, structural updates, utility planning, plumbing, electrical systems, insulation, windows, flooring, cabinetry, lighting and finish details.

Our team builds attached ADUs, detached backyard cottages, garage conversions and small independent living spaces. Every project is planned around access, privacy, layout, drainage, energy efficiency and long-term use. The goal is to create an ADU that feels comfortable, safe and useful for everyday living.

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ADU construction options tailored to your property

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Basement conversion

A basement conversion transforms existing lower-level space into a fully functional living unit with a private entrance, bathroom, kitchenette and living area.

Using the current structure reduces costs while improving moisture control, ceiling height, lighting, insulation, HVAC, plumbing and electrical systems.

This option works well for rental income, extended family, or long-term guest stays.

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Garage conversion

Garage conversions turn underutilized garage space into comfortable living quarters, including a bedroom, bathroom, kitchen and living area.

This solution adds valuable square footage without expanding the home’s footprint while upgrading insulation, windows, flooring, utilities, climate control and modern finishes for versatile everyday use.

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Attic conversion

Attic conversions create private upper-level living space with a bedroom, bathroom, kitchenette and lounge. Structural upgrades, dormers, stair access, insulation, ventilation, skylights, HVAC integration and plumbing allow homeowners to gain extra living space while preserving yard and garage areas, ideal for guests, teenagers, home offices or rental income.

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Built around Renton’s housing stock

ADU construction Renton WA often involves older homes that need practical upgrades before new living space can be added. Many Renton properties benefit from updated electrical systems, modern plumbing, better insulation, improved ventilation and more efficient layouts. In areas near Lake Washington, Cedar River or lower-lying parts of the city, moisture control and drainage can also shape the construction plan.

These details matter for foundation work, exterior materials, waterproofing, heating and cooling, and long-term durability. For Boeing employees, first-time homeowners, growing families and buyers looking for better value near Seattle and Bellevue, an ADU can make an existing property work harder. A well-built unit may support family needs today while improving flexibility for resale in the future.

Our Renton ADU construction process

Building an accessory dwelling unit Renton homeowners can use for years starts with careful planning. Maksymov Brownstone LLC keeps the process organized so clients understand the budget, timeline, materials, permit steps and construction stages.

  • 01

    Property walkthrough

    We begin by reviewing your home, lot, goals and budget range. The team looks at access points, existing structure, garage potential, utilities, drainage, privacy and possible ADU placement.

  • 02

    Feasibility and layout planning

    Next, we develop a layout that fits the property and intended use. This may include a bedroom area, bathroom, kitchenette or full kitchen, storage, windows, lighting and a private entrance.

  • 03

    Detailed scope and estimate

    You receive a clear scope of work with material options, construction phases, budget details and estimated timeline. We explain cost factors such as structural work, utility upgrades, finish selections and site preparation.

  • 04

    Permit coordination

    Maksymov Brownstone LLC helps organize ADU permits Renton projects may require through the proper local process. Depending on the address, this may involve City of Renton Development Services or King County review for nearby unincorporated areas.

  • 05

    Construction work

    The build may include demolition, framing, utility rough-ins, insulation, drywall, flooring, tile, cabinetry, fixture installation, exterior work and finish carpentry. We keep communication clear throughout the construction stage.

  • 06

    Final inspection and project completion

    Before turnover, we complete a walkthrough, review details and address final punch-list items. The finished ADU is delivered as a clean, functional and durable living space ready for use.

Custom ADUs created with precision, integrity and design that elevate every home
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More ways we can transform your home

MB Remodels provides a range of complementary services beyond ADUs, including basement remodeling, attic conversions and garage conversions. We offer versatility, consistent quality and the convenience of working with one trusted team for all renovation needs.

If you are looking for creative ways to remodel your home, we provide free consultations to help you start your next project in Renton.
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5 average (3 reviews)

What our customers say

J
J Jenny Lian
4 months ago

I recently had the pleasure of working with Ihor on a remodeling project for my home, and I couldn't be happier with the results. From start to finish, Ihor demonstrated exceptional professionalism, skill, and dedication.

J
J John Nye
4 months ago

This company is amazing. Their team of specialists at remodeling proved to be hard working, determined and perfectionists. The assessment of needs was simple and the quote was more reasonable than expected, and the final invoice had no surprises. There are no risks in engaging this company.

S
S Soledad Guerrero
4 months ago

The experience was so positive that we’re already thinking ahead to our next project with them: remodeling all of our bathrooms. Knowing how dedicated they are to their craft gives us complete confidence in choosing them again.

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Gallery

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Portfolio

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Where we offer ADU construction

Our company can boast a high level of expertise in the building and remodeling industry while delivering high-quality services to our customers. Maksymov Brownstone LLC pays close attention to every detail of your ADU construction project, ensuring you’re more than satisfied with the final result. See all cities we serve across the Greater Seattle Area:

Frequently asked questions

These answers cover common questions about ADU construction in Renton. For exact recommendations, cost details, permit requirements or design ideas, Maksymov Brownstone LLC can review your property and help define the next step.

Is an ADU a good investment for a Renton property?

Yes, for many homeowners, an ADU can improve how the property functions and may support future resale value. Renton’s location near Seattle, Bellevue and major employment centers makes flexible housing useful for families, guests, remote work or long-term rental planning.

What should older Renton homes be checked for before ADU construction?

Older homes may need review for electrical capacity, plumbing access, insulation, framing, ventilation, moisture control and foundation condition. This is especially important for garage conversions or attached ADUs because the existing structure must safely support the new living space.

Can a detached ADU work on a smaller lot?

Sometimes, but the layout must be planned carefully. Access, setbacks, utilities, drainage, privacy, parking flow and outdoor space can all affect the design. A compact detached ADU may still work if the property has a practical build area and a clear construction path.

Do you help with ADU design choices?

Yes. Maksymov Brownstone LLC helps homeowners make practical design decisions, including layout, flooring, cabinetry, lighting, bathroom fixtures, kitchen finishes, storage and exterior materials. The goal is to create a space that fits the main home while remaining functional on its own.