Nampa is the second-largest city in Idaho and has a genuinely mixed housing stock — a real downtown with early-twentieth-century homes, decades of post-war and mid-century neighborhoods, and a large volume of recent subdivision growth on the edges. The renovation work here is more varied than anywhere else in Canyon County.
We handle kitchen and bath remodels, whole-home renovations, additions, detached shops and garages, and new construction throughout Nampa, on both city lots and the surrounding county acreage.
- Permitting authority
- City of Nampa Building Department
- Water & sewer
- City water and sewer in town; well and septic on county acreage
- Terrain
- Flat valley floor and irrigated farmland
- ZIP codes
- 83651, 83686, 83687
- Where we work in Nampa
- Downtown Nampa · Lakeview · Ridgecrest · Midland · Southside · Karcher · North Nampa
What we find in Nampa homes
Downtown and the older Nampa neighborhoods hold Craftsman bungalows, foursquares, and cottages from roughly 1900 to 1940, many with original wood windows, plaster, and framing worth keeping — and with the wiring, plumbing, and insulation you would expect from that era. The 1950s through 1970s neighborhoods are largely single-story ranches on generous lots, which makes them excellent candidates for opening up the main living area and adding on. Newer subdivision construction on the north and south edges is structurally straightforward and mostly wants layout, basement, and outbuilding work.
Permitting and planning in Nampa
Permits run through the City of Nampa Building Department; parcels outside city limits go through Canyon County Development Services, which applies different standards for accessory structures, setbacks, and dwellings. Irrigation is a defining feature of this area — Pioneer Irrigation District and Nampa & Meridian Irrigation District easements and delivery ditches cross a large share of properties, and they constrain where you can build far more often than people expect. On county acreage, well and septic feasibility and Southwest District Health approval are part of the front-end work on any new dwelling or ADU.
What we build in Nampa
Home Remodeling & Renovation
From a one-room addition to a complete interior and exterior renovation, we guide the project from concept to completion.
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Kitchen Remodeling
A well-designed kitchen is the social center of your home. We handle design, cabinets, counters, lighting and flooring.
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Bathroom Remodeling
Thoughtful planning and attention to detail are the keys to any bathroom remodel — from a guest bath to a full primary suite.
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Custom New Home Construction
From the first plan sketch to the day you move in — custom homes built to your site, your budget, and the way you actually live.
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Design & Build
One team, one contract, one continuous flow of work from the first concept through to the final punch list.
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Shops, Garages & ADUs
RV shops, detached garages, metal buildings, and accessory dwelling units — the outbuildings Idaho property actually gets used for.
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Commercial Remodel & Tenant Improvements
Office, retail, restaurant, and industrial build-outs — including phased work in spaces that have to stay open.
Learn moreBuilding in Nampa: common questions
Do you work on older homes in downtown Nampa?
Regularly, and it is a specialty rather than an inconvenience. Homes from that era commonly need electrical service and circuit upgrades, plumbing replacement, insulation and air sealing, and structural attention where past additions were framed casually. Handled deliberately, they become some of the best houses in the valley.
Can I put a shop on my acreage outside Nampa?
Generally yes, under Canyon County standards for accessory structures — setbacks, height, and lot coverage govern, and irrigation easements are the constraint that most often moves a building. We verify the easements from the parcel record before siting anything.
What is involved in building a new home on county land near Nampa?
Beyond the house itself: a drilled well, a septic system with district health approval, driveway and approach permitting, power service to the site, and confirmation of any irrigation delivery obligation attached to the parcel. None of it is unusual — it just needs to be scoped and priced at the beginning rather than mid-project.
What our clients say about GW Construction
We specialise in helping clients get the biggest return on their investment — and we’d welcome the chance to give you a custom evaluation of your home.
“The finished work was excellent, delivered on time, and inside our budget. What more is there to ask?”
Our experience with GW Construction was outstanding from beginning to end. They were recommended to us by a real estate agent we trusted, who was helping us plan a remodel of a home we had just purchased. Past contractors had been hit or miss for us, so committing to a renovation north of $70,000 made us genuinely nervous. That changed at the first meeting. Derek listened carefully to what we wanted the remodel to accomplish and then carried the plan out faithfully. Just as valuable, he offered real insight where he saw a way to improve on our thinking, and told us plainly when an idea of ours was not economically sensible or carried a downside we had not considered. He was straightforward, transparent, and respectful throughout. Communication was excellent — calls, emails, and texts were returned promptly. He even introduced us to each of the subcontractors so we could build a relationship with them directly. Most importantly, the finished work was excellent, delivered on time, and inside our budget. What more is there to ask? Highly recommended.
Jack and Sue Serrino“He has completed more than 25 projects for my clients over the years, and I intend to keep sending them his way.”
Derek is far and away the best contractor I have worked with, and his ability to listen to my clients and respond to what they actually need has exceeded anything I expected. Being classically trained and professionally educated shows in the work. His grasp of both the practical and the possible means he handles small and large-scale jobs equally well, and there is genuinely nothing I would hesitate to refer to him. He has completed more than 25 projects for my clients over the years, and I intend to keep sending them his way.
Seth O’ByrneWe also build near Nampa
Building in Nampa?
Tell us about the project and we'll set up a free consultation at the property — no pressure, no obligation.