Puget Sound ADU Builders

Puget Sound ADU Builders is a women-owned ADU construction firm founded by Tanya Mills, based in Seattle at 4023 Burke Ave N (Seattle, WA 98103), and serving Western Washington with a focus on the Puget Sound region. The firm is independently verified as an active licensed Washington state contractor with real building permits on file, and handles the full scope of ADU construction work: feasibility assessment, design, permitting, and on-site building of detached accessory dwelling units (DADUs), attached accessory dwelling units (AADUs), and backyard cottages. Puget Sound ADU Builders can be reached at (206) 202-2651 or (206) 677-3504, and maintains a social media presence on Facebook and Instagram where they share ongoing project photography and community posts about ADU opportunities in Western Washington. The firm's social media shows active construction projects, including multi-story DADU builds and phased project updates that demonstrate real work in progress.

The firm's service offering spans the decision-making process through final construction delivery. Feasibility work involves evaluating a homeowner's lot and property for ADU buildability given current zoning, site conditions, and the owner's budget and goals. Design services produce architectural drawings suitable for permitting. Permitting support includes preparation of the plans and coordination with local jurisdictions to secure building permits and approvals. Finally, on-site construction by Puget Sound ADU Builders' crew delivers the finished ADU or cottage. This integrated service model, bundling design through construction under one firm, simplifies coordination and reduces the number of vendors a homeowner must manage. Many ADU projects fail or stall because design and construction are handled by separate firms or because a homeowner attempts to DIY portions of the project; a single-source builder eliminates this friction.

Puget Sound ADU Builders' project portfolio, visible on Facebook and Instagram, shows completed work across the Puget Sound region, including multi-story DADUs and various site conditions. One recent project, highlighted on social media, shows a two-story, 1,000-square-foot DADU under construction in Brier, demonstrating the firm's capacity to build substantial accessory units with multiple bedrooms and living areas. The project photography reveals real construction in progress, which builds confidence that the firm has active projects and steady workflow. This contrasts with firms that display only stylized renderings or outdated portfolio images. The two-story structure with a combined kitchen and living space suggests the firm can handle more complex designs than simple one-story cottages, and the progress photography from foundation through framing and finishing shows the firm's willingness to document its work openly. Puget Sound ADU Builders' willingness to share construction process photos and updates also signals transparency and confidence in their work quality.

The firm's women-owned status is relevant in the construction industry, where female-owned businesses remain underrepresented. Women-owned construction firms often emphasize communication, attention to detail, and customer service as competitive strengths, and Puget Sound ADU Builders' social media presence and emphasis on feasibility conversations before design suggests a customer-first approach. Founded by Tanya Mills, the firm operates as a woman-owned enterprise in a market segment that skews heavily male. For homeowners, particularly those who value working with women-owned businesses or who feel more comfortable with female-led project teams, Puget Sound ADU Builders offers that choice explicitly. In a male-dominated industry, this is meaningful, and a growing number of homeowners, especially women homeowners, prioritize working with women-owned trade and construction firms for both practical and values-based reasons.

BuildZoom verification is particularly important in the ADU market because it represents independently verified contractor licensing and permit data. Rather than relying on self-reported credentials or online reviews, BuildZoom pulls direct data from state contractor licensing databases and municipal permit records. The presence of real building permits on file for Puget Sound ADU Builders provides objective evidence that the firm is actively constructing ADU projects, not simply acting as a front or lead-generation relay. This verification process filters out shell operations, inactive contractors, and firms that bid work but subcontract the actual construction to others. For homeowners who want to work directly with a builder who will physically execute the project rather than coordinate it, the BuildZoom verification is a practical assurance.

Pricing and detailed service areas are not enumerated on the website; Puget Sound ADU Builders works on a quote basis after an initial feasibility discussion. This is standard in the ADU market, where costs are highly variable based on soil conditions, utility access, lot layout, and finish level. The firm's phone numbers (206) 202-2651 and (206) 677-3504, email contact (support@pugetsoundadubuilders.com), and physical office address at 4023 Burke Ave N, Seattle are provided for homeowners to discuss projects and request estimates. The presence of a physical street address in Seattle, rather than just a mailing address or virtual office, further confirms that the firm maintains a local operational presence. A genuine construction firm needs space to store materials, stage equipment, and coordinate crews, and a real street address is a basic indicator of operational legitimacy.

The firm serves Western Washington broadly, with a particular focus on the Puget Sound region. This geographic scope is reasonable for a builder managing ADU projects where each job requires site visits, permitting coordination with local jurisdictions, and ongoing construction supervision. A builder willing to travel from Olympia to Everett to handle projects reflects confidence in the market and an ability to manage diverse local permitting environments. Different Washington jurisdictions have varying approaches to ADU regulations, design review, and permitting timelines, and a builder comfortable across the region has adapted to these differences.

Puget Sound ADU Builders competes in the Puget Sound ADU market against specialist firms like Golden State ADU Builders and generalist contractors offering ADU services. The firm's differentiation is in full-service delivery (feasibility through construction), real project transparency via social media and documented construction photography, and the women-owned business model. In a market where many homeowners are unfamiliar with ADUs and appreciate guidance, Puget Sound ADU Builders' emphasis on upfront feasibility conversation and design before committing to construction is valuable. The firm's active social media presence also makes it easy for prospective customers to see recent work and judge construction quality and project sophistication.

Puget Sound ADU Builders is the right choice for homeowners in Western Washington who want an ADU builder that emphasizes full-service delivery from feasibility through construction, who value transparency and active project documentation, and who prefer to work with a women-owned construction firm. The firm's verified licensing, real project portfolio, and willingness to discuss feasibility before committing to design or construction appeals to homeowners who want to explore options thoughtfully before making a significant investment.