In-Law Suite Addition Spokane Nine Mile Falls, Washington
Room, second-story, and in-law additions built for Inland Northwest living
Home Additions Service in Nine Mile Falls, Washington
Home Additions in Spokane & the Inland Northwest
Growing families, aging parents, and the shift toward working from home all put pressure on square footage. A thoughtfully built addition lets you stay in the neighborhood you love while gaining the room your household actually needs. As a licensed general contractor serving Spokane, Spokane Valley, Liberty Lake, Mead, and the surrounding communities, Stonegate Builders approaches every addition with strength, precision, and trust — the same values that guide our masonry and full-scale construction work.
You get it, the subject of home additions is just one of those things in life you have to trust a professional to do. So feel free to skip all the reading and click the button below to get a quote now, or scroll down to learn more.
Get A QuoteTypes of Additions We Build
No two homes expand the same way. We help you weigh footprint, budget, and long-term value to choose the right approach:
- Room additions — family rooms, home offices, expanded kitchens, or an extra bedroom built onto the main floor.
- Second-story additions — adding living space above the existing home when your lot leaves little room to build outward.
- Primary-suite additions — a private bedroom, walk-in closet, and en-suite bath tailored to how you live.
- In-law and multigenerational suites — accessible, semi-independent living space for parents, adult children, or guests.
- Bump-outs and sunrooms — smaller expansions that add light, storage, or breathing room without a full addition.
Matching Your Existing Home
The mark of a great addition is that it does not look like one. Our crews focus on seamless tie-ins — aligning rooflines, matching siding profiles and trim, blending masonry and stonework, and carrying interior finishes through so the new space reads as original. Because stonework is a core Stonegate specialty, brick and stone accents integrate cleanly with the rest of your exterior.
Foundations, Framing & Structural Tie-Ins
Additions live or die on the connection to what is already there. We evaluate the existing foundation, load paths, and framing before design is finalized, then build footings and foundations engineered for local soils and frost depth. Second-story projects receive extra attention to structural reinforcement so the existing home safely carries the added load.
Materials & Finishes You Can Choose
Your addition should reflect how you live while complementing the home you already have. We help you select durable, climate-appropriate materials — from fiber-cement or composite siding and energy-efficient windows to hardwood, tile, or engineered flooring and quartz or solid-surface countertops. Where it suits the design, brick and natural or manufactured stone add lasting character, texture, and curb appeal that hold up to Inland Northwest weather.
Our Process, Step by Step
- Consultation and site review — we walk your home, listen to your goals, and assess feasibility.
- Design and planning — layouts, finishes, and a clear scope of work.
- Permitting — we prepare and submit drawings for City of Spokane or Spokane County review.
- Construction — foundation, framing, mechanicals, and finishes, coordinated to limit disruption.
- Inspections and walkthrough — we meet required inspections and review the finished space with you.
Built for the Spokane Climate
Inland Northwest additions must handle real winters. We build with proper snow-load capacity, careful insulation and air sealing for energy efficiency, and detailing that resists freeze-thaw cycles at foundations, flashings, and masonry. The result is comfortable year-round and durable for the long haul.
Ready to add the space your Spokane home needs? Call Stonegate Builders today at (509) 609-5199 to schedule a consultation and start planning your addition.
Home Additions FAQs
We build for the Inland Northwest climate from the ground up. That includes proper snow-load capacity, careful insulation and air sealing for energy efficiency, and detailing that resists freeze-thaw damage at foundations, flashings, and masonry. The result is an addition that stays comfortable year-round and remains durable through many cold, snowy seasons.
Yes. Stonegate Builders is a licensed, bonded, and insured Washington general contractor. That means your addition is built by a registered contractor who pulls the proper permits, meets required inspections, and stands behind the quality of the work. We serve Spokane, Spokane Valley, Liberty Lake, Mead, and the surrounding Inland Northwest.
Yes. We guide your addition from the first consultation through design, permitting, construction, and the final walkthrough. Handling the process as one team keeps decisions coordinated, reduces surprises, and gives you a single point of accountability from start to finish.
You get clear communication at every stage and craftsmanship you can trust.
An in-law suite is a semi-independent living space — often with a bedroom, bathroom, and sometimes a small kitchenette — for parents, adult children, or guests. We design and build these additions with accessibility and privacy in mind, tying them into your existing home while giving occupants comfortable, functional space of their own.
That is our goal. We align rooflines, match siding profiles, trim, and masonry, and carry interior finishes through so the new space blends with the original. Because stonework is a Stonegate specialty, brick and stone accents integrate cleanly. A well-built addition should look like it was always part of the house.
Timelines vary with the size and complexity of the project, permitting, and weather. A modest room addition moves faster than a full second story or a multigenerational suite. After reviewing your home and scope, we provide a realistic schedule and keep you updated throughout, so you always know what to expect at each phase.
In many cases, yes. Second-story additions depend on your existing foundation and framing being able to carry the added load, which we evaluate before design is finalized. When reinforcement is needed, we engineer and build it in. A second story is a strong option when your lot leaves little room to expand outward.
Yes. Additions that change your home's footprint or structure require permits and inspections through the City of Spokane or Spokane County, depending on your location. As a licensed general contractor, we prepare and submit the required drawings, coordinate the review process, and meet each inspection so your addition is built to code and properly documented.
Cost depends on the size, type, and finish level of your addition, along with structural and site factors unique to your home. A small bump-out is very different from a full second story. The most reliable path is a consultation and site review, where we assess your goals and existing structure and provide a detailed, written scope so you know exactly what your project includes.