ACS Seattle

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New basement from our basement contractors in Seattle, WA.

Basement Remodels

Exterior home addition in Seattle, WA.

Home Additions

Your Trusted West Seattle
Remodeling Contractor
for Over 27 Years and Counting

Contact Us Today

Fixed Bids

Your Locally Preferred Remodeling Company Services in Seattle, WA 

You don’t want a living structure that feels as though it could belong to just anyone. Instead, you want a living space that suits your needs and lifestyle. Fortunately, the skilled residential remodeling contractors in Seattle, WA, at ACS Seattle specialize in projects concerning nearly every aspect of the home. As your dedicated contractors, we’ve made it our mission to our transform our clients’ one-of-a-kind design aspirations into reality. 

Our well-versed home improvement contractors specialize in basement renovations, home additions, and detached dwellings such as garages and conversions. We consider it our duty to providing our clients with top-notch home improvement services at excellent prices. Take advantage of our wide-spanning knowledge and technical expertise by putting our capable team to work for you. We offer amazing remodeling company services in Seattle, WA.

Renovating Basements for Any Purpose

Does your home feel cramped? When it comes to home expansion, several intuitive solutions involve making changes to the spaces above ground level. However, your basement offers viable real estate. Add more living space to your home and avoid having to build upward or outward by pursuing a basement rehab project with the help of our skilled basement contractors. Whether you intend to use your below-ground space as an additional bedroom, for entertainment, or storage purposes, you are sure to have space that you’ll love when we’re finished.

Creating Beautiful Home Additions for Our Customers

An accessory dwelling unit (ADU) is a legally permitted dwelling attached to a single-family house that has a separate entrance. ADUs can be renovated from an existing part of the home or built onto an existing part of the structure. Do you have ambitious ideas to create a rehearsal space, recording studio, or personal gym on your property? Trust our home improvement contractors to bring your dream space to life. We can’t wait to get to work building addition to house. Rest assured that between our years of experience and credentials, we’ll be able to create the perfect space that suits your aesthetic aspirations and meets your needs. 

New cabinets installed for your home improvement in Seattle, WA. Lamp Sink

Call us today to go over
your contracting needs!
(206) 452-7552

About Us

ACS Seattle is a collective of kindred spirits: architects, project managers, master craftsman, and inspired designers. We listen — we study — we counsel and collaborate. We turn words, sketches, research, and creativity into beautiful living spaces, transforming our clients' lives today and enriching their neighborhoods for years to come. We’re a proud member of Business Networking International, the National Association of Home Builders, and  Master Builders. 

Our team members strive to deliver home additions and remodeled spaces that lift property values, reduce environmental impact, and inspire people to aspire to achieve greatness in every aspect of their lives. Contact our remodeling contractors today and let us personalize the experience for you.

Contact our skilled builders to start planning and building your dream home or accessory unit. We proudly serve property owners in throughout several specific Seattle-based ZIP codes including 98116, 98126, 98136, 98106, and 98146.

Member of Business Networking International, National Association of Home Builders, and Master Builders


Thank you for your interest. We look forward to hearing from you soon.

(206) 452-7552

Hours of Operation
Monday - Friday: 8:00 AM - 5:00 PM

Service Area
Serving throughout Seattle-Specific ZIP Codes (including 98116, 98126, 98136, 98106, 98146, & 98166)


Contractor's License #ACSSEA 922BT