Basement Remodeling in Eastwood Park, WA

Transform Your Basement Into Beautiful Living Space

Licensed contractors who turn your unused basement into the room you actually want to spend time in.

Hear from Our Customers

Professional Basement Finishing Services

More Space, More Value, More Life

Your basement doesn’t have to be that cold, damp space where you store holiday decorations. When finished properly, it becomes your favorite room in the house.

Picture walking downstairs to a warm, dry space with proper lighting and flooring that actually feels like home. Maybe it’s the family room where everyone gathers for movie nights. Maybe it’s your home office where you can actually focus. Or the entertainment space where you host friends without apologizing for the surroundings.

A professionally finished basement adds serious square footage to your daily life and real value to your property. You’re not just getting more room—you’re getting the room you’ve been wishing you had upstairs.

Licensed Eastwood Park Basement Contractors

We Know Seattle Basements Inside and Out

Sea Renovation focuses on what we do best: transforming basements, bathrooms, kitchens, and decks throughout the Seattle area. We’re licensed, bonded, and insured because that’s not optional—it’s basic professionalism.

Since 2023, we’ve been the contractors homeowners call when they want basement remodeling done right the first time. We provide solid warranties and stand behind every job because your basement renovation is an investment that should last.

We’re not trying to be everything to everyone. We’re the basement finishing specialists who show up when we say we will and deliver what we promise.

Our Basement Renovation Process

Straightforward Process, Professional Results Every Time

First, we assess your basement’s current condition and discuss what you want the space to become. We check for moisture issues, examine the foundation, and measure everything properly because good basement finishing starts with understanding what we’re working with.

Next, we handle any necessary moisture control and insulation before moving to framing, electrical, and plumbing rough-ins. This is where experience matters most—Seattle basements have specific challenges that require proper solutions, not shortcuts.

Finally, we install your chosen flooring, finish the walls, add lighting, and complete all the details that make your basement feel like an actual room instead of a basement. You get a space that’s warm, dry, and ready to use exactly how you planned.

Ready to get started?

Explore More Services

About Sea Renovation Inc

Get a Free Consultation

Complete Basement Finishing Solutions

Everything Your Basement Transformation Needs

Our basement remodeling covers the full scope: moisture control, insulation, framing, electrical, flooring, walls, ceilings, and lighting. We handle permits and inspections so you don’t have to navigate that process yourself.

You’ll get basement flooring options that actually work in Seattle’s climate—not just whatever looks good in the showroom. We install proper moisture barriers, choose appropriate insulation, and ensure your electrical and lighting create the atmosphere you want.

Every finished basement includes our warranty because we’re confident in the work we do. Military and first responders receive special pricing—call us for details on those discounts.

How long does a typical basement remodeling project take to complete?

Most basement finishing projects take 3-6 weeks depending on the size and complexity of your space. Simple finishing work on a standard basement usually runs closer to 3-4 weeks, while larger spaces or projects requiring significant moisture remediation, electrical upgrades, or custom features can extend to 6 weeks or more. We’ll give you a realistic timeline upfront based on your specific basement and what you want to accomplish. Weather and permit approval times can occasionally affect scheduling, but we keep you informed throughout the process so you know exactly where things stand.

What basement flooring options work best in Seattle's climate?

In Seattle’s moisture-prone climate, we typically recommend luxury vinyl plank, engineered hardwood designed for basements, or polished concrete for basement flooring. Traditional hardwood and carpet are problematic in most basements here due to humidity and potential moisture issues. Luxury vinyl plank gives you the wood look with complete moisture resistance, while engineered hardwood offers authentic wood with better moisture tolerance than solid hardwood. Polished concrete works great for modern designs and handles any moisture without problems. We’ll assess your basement’s moisture levels and help you choose flooring that looks great and lasts long-term.

Do I need permits for basement remodeling in Eastwood Park?

Yes, most basement finishing projects require permits, especially when adding electrical, plumbing, or changing the structural layout. We handle the permit application process and ensure all work meets local building codes and inspection requirements. This protects you legally and ensures the work is done safely and correctly. Some homeowners try to skip permits to save money, but that creates problems when selling your home or filing insurance claims. Proper permits and inspections give you peace of mind and protect your investment. We factor permit costs and timelines into your project estimate so there are no surprises.

How do you handle moisture and mold issues in basement renovations?

Seattle basements often have moisture challenges that must be addressed before any finishing work begins. We start by identifying moisture sources—whether from foundation issues, poor drainage, or humidity problems. Our approach includes proper vapor barriers, moisture-resistant insulation, adequate ventilation, and sometimes dehumidification systems. If we find existing mold, we address that safely before proceeding with renovation work. Trying to finish a basement without solving moisture problems first is a waste of money because the problems will return. We make sure your finished basement stays dry and healthy for years to come.

What's the typical cost range for basement remodeling in the Seattle area?

Basement finishing costs vary significantly based on size, current condition, and your finishing choices, but most projects in the Seattle area range from $25,000 to $65,000. Basic finishing with standard materials and simple layouts runs toward the lower end, while larger spaces with custom features, high-end finishes, or significant moisture remediation work cost more. We provide detailed estimates based on your specific basement and goals so you know exactly what you’re investing. Remember that a properly finished basement typically adds more value to your home than the renovation costs, making it one of the better home improvement investments you can make.

Can you add a bathroom or kitchenette during basement remodeling?

Yes, we can add bathrooms and kitchenettes to basement renovations, though this requires additional plumbing work and permits. Adding a bathroom significantly increases your basement’s functionality and your home’s value, especially if it’s your only bathroom on the lower level. Kitchenettes work great for entertainment spaces or in-law suites. The key is planning the plumbing layout efficiently and ensuring proper ventilation for both bathrooms and cooking areas. These additions do increase project complexity and cost, but they often make the difference between a nice basement and a truly functional living space that gets used daily.

Local Resources

Eastwood Park, WA is located in King County in Washington State