RT Signature Homes Design & Build, Home Remodeling & Construction in Seattle
A design-build contractor serving Seattle and the Greater Eastside, one team, one contract, from the first site visit through final inspection. The same team that develops your floor plan pulls the permits and builds the project.
One Team. One Contract.
One Company Handles Your Design, Permits, and Construction
David Zivyon and Rotem Zivyon co-own and lead RT Signature Homes. They founded the company in 2015 around a single operational principle: the same team that develops your floor plan pulls the permits and builds the project. That means no gap between what was drawn and what gets built, and no homeowner managing handoffs between an architect, a permit expediter, and a general contractor. To understand how design-build compares to hiring a general contractor, the difference comes down to accountability: one team owns the outcome from design through construction.
The result is a project that moves on a defined timeline, with one point of contact, seven dedicated in-house project managers, and a ten-person team that handles the full scope from structural design through finish installation.
Local Experience
Built for Seattle's Construction Environment
Seattle's residential construction conditions are specific, and a home remodeling contractor working here needs to know the difference. RT Signature Homes operates from its office at 4164 148th Ave NE in Redmond, positioned within the SR-520 corridor, twelve miles from most Seattle project sites, and within direct reach of Bellevue, Kirkland, Sammamish, and Bothell. Project managers run same-week site assessments without the scheduling delays that push start dates back by weeks.
Three permit offices, filed in-house
Read moreRedmond Municipal Code, Bellevue Development Services, and Seattle DCI, we've filed through all three since 2015 and know the current review timelines and drawing standards for each.
Same-week site assessments
Read moreFrom the Redmond office we're twelve miles from most Seattle sites and minutes from Bellevue, Kirkland, Sammamish, and Bothell, so assessments happen without weeks-long scheduling gaps.
Designed against real conditions
Read moreClay-heavy soils, 37 inches of annual rainfall, and marine humidity from October through April all inform material, drainage, and below-grade choices before any scope is finalized.
Full Scope
Everything RT Signature Homes Builds
The complete scope of residential design-build construction, from ADU construction to minor interior repairs. Every project type below is managed by in-house project managers from scope through final inspection.
Accessory Dwelling Units
Detached and attached ADUs, garage ADUs, and garage conversions on existing residential lots.
Room Additions & Combined Scopes
Bump-outs, full room additions, and addition-plus-remodel packages under a single permit.
Garage Construction
New single-car, two-car, and RV-height garages, starting with a lot-coverage calculation.
Full Home Renovations & Remodels
Whole-home renovations, design-led full remodels, and interior layout changes.
Kitchen Remodeling
From standard reconfigurations to custom millwork and design-first kitchen builds.
Bathroom Remodeling
Standard bath remodels, high-spec custom builds, and combined master-suite scopes.
Interior Finishes & Repairs
Flooring, drywall, roof structural changes, windows & doors, and standalone minor repairs.
Outdoor Living & Structures
Patios, covered patios, porches, and multi-level designs, all graded for drainage first.
Pergolas & Shade Structures
Wood, vinyl, and louvered aluminum pergolas, sized to Washington load requirements.
Decks & Balconies
New decks, structural deck repair, and code-compliant balcony construction and design.
Pool Construction
In-ground residential pools with permit, county health review, and barrier compliance coordinated.
From the Owner
What I've Seen on Seattle Lots Since 2015
The first site visit almost never confirms what a homeowner assumed before we arrived.
Last year, a homeowner in Kirkland contacted us about an ADU. They had a rear yard they'd measured on a county parcel map, plenty of room, they thought. When I walked the lot, the buildable area was smaller than the parcel suggested. A mature cedar tree was sitting almost exactly where the DADU needed to go. The setback from the rear property line consumed another five feet. And the existing utility connections were on the opposite side of the house from the ADU location, meaning the utility lateral costs were going to be higher than a standard run.
None of that showed up in the parcel data. It only showed up when someone stood in the yard and looked at it.
We redesigned the ADU placement to a secondary location on the lot that cleared the tree, maintained the required setbacks, and put the structure closer to the existing utility connections. The permit came back clean. The homeowner got their ADU. The design we built was nothing like the layout they'd been imagining before the first site visit.
That's the work. Not the drawings, the decisions that happen before the drawings, based on what the lot actually shows you when you're standing on it.
Seven project managers. Every one of them does this site-first work before scope is written. When the same team that designs the project also has to permit it and build it, you stop designing around what you wish the site was. You design around what the site is. Learn more about the David and Rotem Zivyon design-build team and how RT Signature Homes was built around this approach.
One Contract
One Contract Means One Team Is Accountable for Everything
Design decisions are made with the construction team's input from the first session. The person drawing the layout is also the person pulling the permit and managing the build. When a plan check response comes back from Seattle DCI asking for a revised beam calculation, the same team handles it.
That structure eliminates the most common source of budget overruns on residential remodels: the change order generated when design decisions don't account for what a builder encounters in the field. It applies across every scope we take on, from a complete home renovation that touches every system in the house to a kitchen design and build where the cabinet layout has to route around a plumbing stack found behind the existing wall.
One contract. One team accountable for the outcome.
Our Standards
Consistent Standards Across Every Project
Every RT Signature Homes project follows the same process and material standards, regardless of project size.
All permit applications filed in-house by the assigned project manager, no permit-expediting service. See the Seattle remodeling permit process explained.
Material selections confirmed against 2021 WSEC prescriptive requirements before orders are placed.
Structural conditions verified by in-house project managers before demolition begins.
Board type, waterproofing membrane, and drainage grade confirmed against code and site conditions before installation.
Subcontractor scheduling coordinated by the project manager, no homeowner managing trade sequencing.
Final inspection attended by the assigned project manager, no handoff to a closing crew.
Seven project managers. Ten employees. All operating from the Redmond office. No scope is passed to a third-party project-management layer, the project manager assigned at the first site visit is the same person at the final walkthrough.
How It Works
How a Project Works With RT Signature Homes
One team, one contract, from the first site visit through the certificate of occupancy.
Diagnostics & Site Assessment
Every project starts with a site visit. The assigned project manager walks the lot or existing structure, measuring setbacks, confirming lot coverage, checking structural conditions and mechanical systems. No design work begins until site conditions are confirmed.
For ADUs that means setbacks, lot coverage, utility points, and soil. For interior remodels it means load-bearing walls, plumbing rough-in, and panel capacity, so design reflects what the permit office will approve, not what a generic layout assumes.
Design, Permitting & Pre-Construction
The design phase begins with construction input built in from the first session. Permit drawings are produced by the same team that will build the project, and material selections are made after structural constraints are confirmed, not before.
Applications are filed directly with the applicable jurisdiction: Seattle DCI for city properties, Bellevue Development Services, or Redmond's permit office. You receive a timeline that accounts for the permit review period.
Construction, Inspection & Final Walkthrough
Construction is sequenced by the assigned project manager, framing, then rough mechanical, then insulation and drywall, then finishes. Each inspection stage is scheduled and attended by that same manager.
Final inspection is conducted against the approved permit drawings, and the certificate of occupancy is issued after sign-off. You receive a completed project with a full permit close-out, not an open permit that resurfaces at the next real-estate transaction.
Choose your area. See refined work.
Projects
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Homeowner Reviews
Rated Five Stars by Seattle & Eastside Homeowners
Real reviews from the families whose homes we've designed, permitted, and built, straight from Google.
Ready to build? Let's schedule your site visit.
Get Started
Ready to Start? Here's the Next Step
Contact RT Signature Homes to schedule a site visit, no drawings required before the first conversation. The site visit is where the real scope begins.
Request a Site Visit
Tell us about your project, city, scope, and ideal start date. We'll schedule a site visit.
Call or Email
Office
4164 148th Ave NE
Redmond, WA 98052
What Happens Next
An assigned project manager follows up to schedule your site visit. That's where lot conditions, the existing structure, and permit requirements get confirmed against what you want to build. Architectural drawings come after the site assessment, not before it.