National cost calculators do not price a Redmond project. King County structural requirements, the Washington State Energy Code, and the condition of a settled 1960s–80s house all move the number before finishes are even discussed.
This is a walk through an active Anyvision site — a full home remodel paired with a new room addition — and what each phase actually adds to a budget. For a figure on your own project, call 425-515-5796 and we will scope it.
Why a gut-to-the-studs is the cheap option, not the expensive one
Overlaying new finishes on an aging, compartmentalized house is where budgets break. Homes in Redmond built between the 1960s and 1980s have settled. The original wall studs and ceiling trusses are frequently no longer plumb or level, and nothing about that is visible until the drywall is off.
If a new addition is framed straight and bolted to a settled structure without exposing the tie-in points, the differential movement shows up later as floor squeaks, cracked drywall at the transition seams, and roof leaks at the junction — in a climate with seven wet months.
Stripping back to bare framing
On this Redmond site the interior drywall has come out throughout, exposing the original wall studs, the wooden ceiling trusses and the room layouts underneath.
That visibility is what lets new lumber be sistered against the old joists, and it is what turns a guess into a measurement. It is also the only point at which the whole thermal envelope is reachable at once.
For a whole-home remodel this is the stage that determines whether the rest of the project runs to plan.
Where the addition ties in
The new footprint gets its own foundation, subfloor and wall framing, then has to marry into the existing roofline. That tie-in is the part that carries risk: load has to transfer through the new structure down to the foundation, and the roof junction has to shed water permanently.
Insulation follows immediately, while every cavity is still open. Doing it in this sequence is cheaper than returning to it later, which is the whole argument for combining an addition with a gut remodel rather than running them as separate projects.
The same logic applies to room additions generally: new square footage is rarely the expensive part. The connection to the old house is.
A walk through the site
The clearest way to understand where the money goes is to see the house with nothing hidden.
The four things that move a Redmond budget
Every project is priced on its own scope. These are the variables that decide where in the range it lands.
Demolition and disposal
How much comes out, whether any of it needs special handling, and the haul to King County transfer stations.
Structural work
Foundation, subfloor and framing for new square footage, plus the engineering and roof tie-in that connect it to the existing house.
Energy code compliance
New conditioned square footage brings the Washington State Energy Code into play, which can mean insulation and air-sealing well beyond the addition itself.
Systems capacity
An older panel or undersized service may need upgrading before the new load can be added. This is the one that most often surprises people.
Permits and review
Stamped structural drawings and municipal plan review are a fixed, unavoidable part of any footprint change.
Finish level
The widest variable of all, and the last one to lock. It is also the one you control most directly.
We quote fixed price, not cost-plus. On a cost-plus agreement the homeowner absorbs material inflation, delays and unexpected upgrades. We scope the work, price it, and hold that price — which is only possible because the design and the survey happen before the number is given.
Permits and the Washington State Energy Code
Expanding the structural footprint means a review through the regional MyBuildingPermit.com portal. Redmond requires stamped structural engineering drawings showing that new roof loads transfer safely to the foundation. That engineering is a fixed cost and it cannot be skipped.
Adding conditioned square footage also brings the Washington State Energy Code into scope. Compliance is credit-based, so the whole thermal envelope may need upgrading rather than just the new rooms — insulation, air sealing, and in some cases mechanical equipment.
That sounds like a penalty. In practice, when the house is already open to the framing, it is the cheapest moment it will ever be to do that work. Requirements change, so confirm the current position for your address with Redmond Planning and Building before budgeting.
Realistic timelines
Budgeting time matters as much as budgeting money. The permitting phase is outside our control and it is the longest single wait on most projects.
- Design and permittingStructural and energy code drawings, then municipal review. This is measured in weeks, not days, and varies with the current queue.
- Interior demolitionStripping back to the original studs. Fast, once the permit is issued.
- Foundation and framingExcavation, foundation, subfloor, wall framing and roof tie-in. Pacific Northwest weather affects this stage more than any other.
- Rough-in inspectionsFraming, plumbing and electrical must all pass before anything is closed up. Scheduling around inspector availability is a real line item in the schedule.
- Insulation, drywall and finishOnly once the rough-ins are signed off.
We put these milestones in the agreement rather than leaving them vague, because a schedule nobody has committed to is not a schedule.
Want a real number for your project?
Ranges published online are not a quote. Yours depends on scope, structure and finish level.
Call 425-515-5796 and tell us what you’re planning. We scope the work, design it, and give you a fixed price before demolition starts.
Frequently asked
What does it cost to frame a home addition in Redmond?
It depends on the size of the footprint, the foundation required, and how complex the roof tie-in is. Excavation, foundation, subfloor, wall framing and the connection to the existing roofline are all separate cost components.
We price each project individually after the survey and design, so the number you get is for your house rather than a national average. Call 425-515-5796 with your scope.
Do I need a permit to gut a house in Redmond?
Yes. Removing drywall down to the bare studs and altering load-bearing walls requires a municipal building permit, filed through the MyBuildingPermit portal.
Structural changes require stamped engineering drawings with load calculations before any demolition begins. We handle the filing and the plan review correspondence.
Does an addition trigger Washington State Energy Code upgrades?
Adding conditioned square footage brings the Washington State Energy Code into scope. Compliance works on a credit system, so meeting it can require upgrades to the whole thermal envelope rather than just the new rooms.
In practice that means insulation, air sealing and sometimes mechanical equipment. Confirm current requirements with Redmond Planning and Building for your address.
Why gut the whole house instead of just building the addition?
Because the two jobs share the same access. Once the walls are open you can see the original framing, correct what has settled, run new services, and insulate every cavity in one pass.
Doing them separately means opening the same walls twice, and paying for the access twice.
About the author
Chase Briga — Founder & CEOChase Briga is the founder of Anyvision Home Remodeling, WA Lic #ANYVIHR768KB. Anyvision has completed over 200 projects across Greater Seattle and the Eastside since 2018, including structural additions, whole-home remodels and energy upgrades.
You can verify the license at the Washington State Department of Labor & Industries contractor lookup at any time.
Contact us
- Office
- 8709 161st Ave NE, Unit 377
Redmond, WA 98052 - Phone
- 425-515-5796