Additions & Major Projects in the Seattle–Tacoma area
Some projects go beyond a single room: whole-home expansions, structural reconfigurations, multi-phase renovations that fundamentally change how a house works. These are the builds where experience matters most — and where our five-generation construction heritage and design-build discipline set us apart.
The overview
Our approach to additions & major projects
Large-scale residential construction is a different discipline than cosmetic remodeling. Moving bearing walls, adding significant square footage, raising roofs, and reworking mechanical systems demand rigorous engineering, precise sequencing, and a builder who has managed complexity many times before. Our team specializes in exactly these projects for homeowners across Milton and the surrounding Pierce and King County communities.
Many homes in our area were built decades before today's lifestyles, energy codes, and family structures took shape. A major project lets you solve several problems at once — adding bedrooms for a growing family, carving out an in-law suite for multi-generational living, creating dedicated workspace, and bringing the whole structure up to modern efficiency standards — in one coordinated effort instead of years of piecemeal work.
As a licensed design-build firm (HOMERDB750MH), we carry your project from feasibility study through 3D design, engineering, permitting, and construction with a single accountable team. That continuity is what keeps ambitious projects on schedule and on budget.
A note from Donovan
Your additions & major projects, treated like it's our own home.
I'm Donovan. My family has been building across the South Sound for five generations, and every additions & major projects project we take on gets the same promise: an honest budget range, a design you can walk through in photorealistic 3D before we build it, and a crew that treats your house the way we'd treat our own.
You won't be handed off to a call center or a stranger with a clipboard. You'll work with the same family that's earned its reputation one neighbor at a time — and we don't consider the job done until it feels like home.
— Donovan
Owner & Lead Designer · Licensed WA #HOMERDB750MH
Free design consultation
Tell us about your additions & major projects project and Donovan's team will reply within one business day — no obligation, just honest advice.
Why choose us
What sets our additions & major projects apart
Structural Expertise
Load path analysis, foundation upgrades, beam and shear-wall engineering — we handle the heavy structural lifting that transforms a house rather than merely decorating it.
Multi-Phase Project Planning
For complex scopes, we sequence work into logical phases that manage cash flow, minimize disruption, and keep parts of your home livable throughout construction.
Whole-Home Vision in 3D
Our in-house design team models the complete transformed home, so a project touching six rooms still reads as one coherent design rather than a patchwork of decisions.
Regulatory Navigation
Major projects trigger the most demanding permitting: zoning review, engineering stamps, energy code compliance, and multiple inspections. We manage every step with Pierce and King County officials.
Single-Team Accountability
One contract, one project manager, one standard of craftsmanship across every trade — the antidote to the finger-pointing that derails big builds run by committees.
Financing for Larger Scopes
Substantial projects deserve thoughtful funding. We help you explore construction and renovation financing so the project plan and the financial plan move together.
How it works
Our design-build process
Feasibility & Master Planning
We assess your structure, lot, zoning envelope, and budget to determine what is possible, then help you prioritize scope into a coherent master plan.
Design Development
Our designers translate the master plan into detailed drawings and 3D renderings, iterating with you on layout, materials, and systems.
Engineering & Approvals
Structural engineering, energy calculations, and permit submittals are coordinated in-house so approvals arrive without surprises.
Phased Construction
We execute the build in planned stages with a dedicated site supervisor, holding weekly progress updates so you always know what happens next.
Systems, Finishes & Handover
Mechanical, electrical, and finish work close out each phase, followed by a comprehensive walkthrough, documentation, and warranty coverage.
When the tools come down and the crew heads home, what's left is yours — a house that finally feels like home.
Donovan& the crew
Start your additions & major projects projectFAQs
Additions & Major Projects questions
What counts as a major project versus a standard remodel?
We consider a project major when it changes the structure or footprint of the home — significant additions, second stories, wall reconfigurations across multiple rooms, or renovations that touch most of the house at once. These scopes require engineering, phased planning, and deeper permitting than a single-room remodel.
How do you keep large projects on budget?
By pricing during design, not after. Because our designers and estimators work side by side, cost feedback shapes the plans from the first sketch, and allowances are set realistically before contracts are signed rather than discovered mid-build.
Can a major renovation be done in phases?
Absolutely, and it is often the smartest path. We frequently structure work so priority spaces finish first while later phases are pre-designed and pre-priced, letting you spread the investment without losing design coherence.
Do you upgrade older homes to current codes during major work?
Yes. Structural work opens the opportunity to modernize wiring, plumbing, insulation, and seismic connections. We identify which upgrades are required by code and which are wise investments, so you decide with full information.
How long does a large-scale project take?
Plan on three to six months of design and permitting and six to twelve months of construction for the most ambitious scopes. Your proposal includes a milestone schedule, and our phased approach keeps progress visible throughout.
Are you licensed for structural work in Washington?
Yes — we are a licensed, bonded, and insured Washington general contractor (license HOMERDB750MH) with five generations of structural building experience and long-standing relationships with local engineers and inspectors.