5-star rated home builder
Build your dream home in Post Falls, on the land you love.
Mountainside acreage above the Spokane River.
Custom home builder in Post Falls, Idaho
Post Falls sits on the Spokane River, with the dam, the riverside trails and Q'emiln Park at the middle of it, and Coeur d'Alene a few minutes east. Most of what we build here is above the town rather than in it: steep, wooded acreage south of the river, where the work starts with rock, engineered fill, and a plan for water.
Scenic allure
Falls Park for picnics and waterfall views, the Spokane River for kayaking and fishing, and forested lots that provide natural privacy right at your doorstep.
Lifestyle perks
A safe, family-friendly environment with strong schools, local festivals, and recreation, perfect for growing families or retirees seeking a peaceful pace.
Building edge
A transparent process that navigates county permitting efficiently, delivering durable, value-driven homes with mudrooms, covered decks, and energy-efficient construction.
What we build in Post Falls
The homes we build here are shaped by the view and the winter: large covered decks, great rooms that open to the valley, and an envelope built for North Idaho weather.
A mutual fit
Who thrives building with us
Every successful build starts with alignment. We’re a great fit for clients who value craftsmanship over speed, appreciate a clear and structured process, trust professional guidance, and are building a long-term home rather than a short-term transaction.
And we’re honest when it’s not a fit. If the lowest bid is the deciding factor, we’re probably not your builder, and we’d rather tell you that in the first conversation than discover it together six months into a build.
- You value craftsmanship over speed
- You appreciate a clear, structured process
- You trust professional guidance and recommendations
- You’re building a long-term home, not a short-term transaction
★★★★★
“They finished our custom home ahead of schedule and within budget, and the finished result speaks for itself. If you want a builder you can trust every step of the way, we highly recommend Onyx & Oak.”
— Nick K. · Homeowner
Questions about building in Post Falls
What is the average cost per square foot to build a custom home in Post Falls?
A single per-foot number can mislead more than it helps. Cost per square foot is only a total divided by a square footage, so it shifts with your finishes, lot conditions, and features, and with whether the count is living space only or total improved space (garage, decks, and covered areas included). As a rough orientation, custom homes in Post Falls often run $350 to $500 per square foot of living space, with waterfront or hillside lots adding site cost. Use it as a starting point, not a quote. We don't price by the square foot; we build one real, fixed number from your actual plans, finishes, and land. Our free Cost Guide explains how to compare a per-foot number honestly.
What permits and regulations are required for building a home in Post Falls?
Building in Post Falls requires city permits for construction, mechanical, plumbing, and site work, plus septic or sewer and stormwater approvals. The Post Falls Building Division reviews under Idaho codes. Rules differ for city limits vs. county. We take care of the full process, from applications to inspections.
What are the biggest challenges of building on sloped or raw land here?
Sloped or raw lots in Post Falls often face excavation needs and drainage challenges, increasing site-prep costs like retaining walls or taller foundation walls. We conduct early lot evaluations and stormwater planning to deliver solid builds without timeline overruns.
Free Cost Guide
What does it really cost to build in Post Falls?
Straight answers on what a custom home really costs, allowances, and the line items that catch people off guard.