With over a decade of experience, we design and build ADUs and custom home additions that expand your living space, add value, and blend seamlessly with your home’s style.

Medina Home Addition Contractors and Skilled ADU Builders

Expand your home with a top-rated Medina home addition contractor and ADU builder . We specialize in custom home additions, home extensions, detached and attached ADUs, and energy-efficient upgrades. With over 14 years of experience, we ensure high-quality craftsmanship and customer satisfaction.
4.9
Based on 35 reviews
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Professional Builder

5 Star Rated Medina Construction Company

14

Years of
Experience

+150

Completed
Projects

FREE QUOTE FOR YOUR ADDITION OR ADU

Professional Addition & ADU Contractor
Seattle’s Eastside, WA

Our Comprehensive Addition & ADU Services Include

ADU Builder in Medina: With over a decade serving Medina homeowners, we bring proven craftsmanship to every Accessory Dwelling Unit project. From solid structural work to precise finishes, our team builds attached and detached ADUs designed for durability, comfort, and lasting value.

Home Additions in Medina: We specialize in high-quality home additions that meet practical needs while upholding our standards for fine construction. Whether you need extra bedrooms, a functional home office, or a dedicated in-law suite, our local knowledge and hands-on approach ensure a result you’ll appreciate for years.

Professional Home Addition Contractor and ADU builder

Let's Talk About Your Remodeling Project

Complimentary Estimate and Expert Guidance from experienced Professionals.

Our ADU and Addition Services

Attached ADUs

Connected to the main house for multi-gen living or rental income. Designed for a seamless tie-in and code compliance.

Detached ADUs

Stand-alone backyard cottages for guests or rental. Built for privacy, durability, and local zoning compliance.

Home Additions

Increase square footage with custom additions that match your home’s style and boost long-term value.

Home Extensions

Targeted expansions: kitchen, bathrooms, living, or sunroom planned for comfort, light, and energy efficiency.

GALLERY

Some Previous Successful Home Extensions Projects in Medina, WA

Why Choose BLC Remodeling LLC for Your Medina Home Additions and ADUs?

Licensed and Insured Medina Contractor

BLC Remodeling holds full licensing and insurance for projects in Medina, ensuring every addition or ADU meets state and city building codes. We maintain the highest standards for safety, structural soundness, and detail work.

Knowledge of Medina’s Residential Requirements

Medina’s residential projects often involve custom design review and strict setback regulations. We incorporate these requirements early in the process to ensure a smooth progression from concept to construction.

Custom Spaces for High-Value Homes

Our work in Medina includes in-law suites, pool houses, and multi-room additions that complement large estate-style homes. Each project focuses on both luxury finishes and long-term durability.

Craftsmanship and Premium Materials

We use premium hardwoods, architectural-grade windows, and advanced weatherproofing systems to protect and enhance your home. Our carpentry and finish work are executed with precision for a refined result.

Experienced Builder Serving Medina Since 2011

With projects completed in Medina’s lakefront and interior neighborhoods, our experience ensures designs that align with the community’s architectural standards and homeowner expectations.
kitchen-remodeling-bellevue

Schedule an Estimate

Looking for a local Home Extension contractor in Medina? Contact us today to schedule a free consultation, and let us transform your home with our custom remodeling services.

Achieve Your Dream Home With Our Process

Simplified Medina Home Extension Process

1.

Schedule a Consultation

Reach out to us via phone or our contact forms .

2.

In-Home Assessment

We’ll schedule a visit to your home to understand your vision

3.

Receive a Detailed Quote

We’ll provide a detailed quote and project timeline.

4.

Schedule and Begin Work

Once you approve the quote, we'll schedule your project and begin the work.

Start Your Home Transformation Today

Schedule Your Medina ADU or Addition Estimate

Call us anytime, we strive to answer all inquiries within 24 hours.

4.9
Based on 35 reviews
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Judi
17:31 24 Jul 25
I would highly recommend BLC to anyone who is contemplating a home renovation project. Bogden and the BLC team are reliable, efficient, budget-conscious, courteous and sensitive to the needs of their clients - and they achieve amazing results. I would give BLC ten stars or more if I could!

BLC remodeled our primary and guest bathrooms several years ago. It was a large project and the entire team was outstanding in their planning and execution of the work. Recently our primary bath shower was showing a bit of wear in a few places that needed some additional grout. I contacted Bogden, and he was able to work my small job into his busy schedule. His team member who came to do the job was great, complete the work in just a couple of hours and the results were amazing.

Two of our neighbors were so impressed with results of our 2020 bathroom remodels, they both hired BLC and were similarly pleased with outstanding results on their respective bathroom remodels.

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Frequently asked questions

In Medina, adding a 1,000 square foot home addition typically ranges from $80,000 to $200,000, depending on the complexity and the quality of materials used. Factors such as the type of room, finishes, and local labor costs can affect the total price​

Adding an addition to your existing home is generally more cost-effective than building a new house. Home additions make use of existing infrastructure and utilities, which can significantly reduce costs. However, the total expense will depend on the size and complexity of the addition, as well as the materials used.

The cheapest type of home addition is typically a single-room extension, such as a sunroom or a small bedroom. These additions require less structural work and fewer materials compared to multi-room additions or second-story expansions. Costs can be further minimized by choosing cost-effective materials and designs.

The timeline for home additions varies depending on the project’s scope and complexity. On average, a small addition like a single room can take 3-4 months, while larger projects, such as adding a second story, can take 6-9 months. Detailed planning and efficient project management are crucial to staying on schedule.

In Medina, WA, ADUs can be either attached or detached from the primary residential structure. Key requirements include:

  • Size: ADUs must be no larger than 1,000 sq. ft. or 40% of the principal dwelling’s floor area, whichever is smaller.
  • Parking: One off-street parking space is required.
  • Compliance: Must adhere to all construction codes, including building, electrical, fire, and plumbing.

For detailed information, visit the Medina City Government ADU Guidelines.

Service Areas

Other Service Areas

Don’t see your neighborhood listed? No problem! We are eager to hear about your project. Call us today, and let’s discuss how we can help. Proudly serving homeowners throughout Eastside and Greater Seattle!