If you own land in Spokane County and want to build a custom home, two steps come before anything else: site development and permitting. They are not the exciting part of the project, but they decide whether your build starts on schedule and how smoothly it moves once it does.
This guide explains how site development and permitting work in Spokane County, who is involved, and what to prepare before you apply. You will also see where local requirements can differ depending on whether your property is inside a city or in unincorporated county land.
What Site Development and Permitting Mean
Site development is the physical work that turns a piece of land into a buildable lot. It can include clearing, grading, drainage, driveway access, and bringing in utilities such as water, power, and a septic system or sewer connection.
Permitting is the approval side. Before construction starts, local agencies review your plans and your site to confirm the home meets building codes and local rules. Inspections then happen as the work moves forward.
In Spokane County, as elsewhere, the two steps overlap. Your site conditions shape what the permit reviewers need to see, and the permit requirements shape what site work must be done. That is why they are best planned together.
Which Office Handles Your Permit
The Spokane County building permit process starts with knowing who reviews your application. Spokane County is made up of cities, towns, and unincorporated land, and the office that reviews your permit depends on where your parcel sits.
If your lot is inside a city such as Spokane or Spokane Valley, the city runs its own permit process. If your lot is in unincorporated Spokane County, the county's building and planning department handles it. Other towns in the county may have their own arrangements as well.
Before you plan anything else, confirm which jurisdiction covers your parcel. Your county parcel records or a call to the local planning office will tell you. Everything that follows, from the application to the fees, depends on that answer.
Site Development in Spokane County
Site development in Spokane County varies a lot from one property to the next. Every lot is different, and the work needed depends on the land. Here are the areas that most often come into play.
Clearing and Grading
Many lots need vegetation cleared and the building area leveled. Sloped or rocky ground can add to the scope. When grading is part of the project, county reviewers want to know how much soil will be moved. For new construction involving land disturbance, the county asks for the cut and fill, meaning the total cubic yards of material imported to or exported from the site, along with erosion and sediment control measures.
Critical Areas and Buffers
Washington regulates building near sensitive features. For new construction with land disturbance, Spokane County asks that the site plan show the location of and distance to critical areas or buffers, both on your property and on neighboring properties. These include shorelines, wetlands, streams, steep slopes, flood zones, and habitats.
If your lot touches any of these, expect extra attention in review and possibly additional steps. It is best to learn this early, before the home is placed on the lot. A parcel with a stream or steep slope at the back may still be very buildable, but the home may need to sit in a different spot than you first pictured.
Access and Driveways
Your home needs reliable legal access. Check whether your lot fronts a public road or relies on a private road or easement. Driveway location and construction affect both the site plan and the work needed before the foundation.
Water and Sewer or Septic
Utilities are some of the biggest variables in any site. Some Spokane County lots connect to public water and sewer. Others rely on a private well and a septic system. Planning for them early matters because they affect where the house can sit. A well and a septic drain field both need room and must keep a required distance from each other, so a good layout considers them together.
Septic systems in Spokane County are reviewed by the Spokane Regional Health District. The district reviews systems for compliance with regulations, permits them, and inspects them after installation. Its application materials include an overview of the on-site sewage system permitting process and a guide on water adequacy. Once a system is installed, it receives a renewable permit, and inspection and maintenance are required before renewal.
The Building Permit Application
The Spokane County building permit application has defined submittal rules. For a new single family home in unincorporated Spokane County, the county lists specific submittal requirements. Plans are submitted as a PDF, with supplemental documents saved as separate, individually named PDF files.
A typical submittal package includes:
- A site plan, foundation plan, floor plan, and key plan
- Framing plan, elevations, cross sections, and details as required
- Energy compliance forms for a heated home
- Beam calculations and truss packages
- Structural or engineering analysis where it applies
What the Site Plan Must Show
The site plan is one of the most important documents. It shows property lines, existing and proposed structures, setbacks, streets and rights-of-way, utilities, and parking. It is drawn to scale, with a north arrow, and it includes the critical area and grading information described above.
A clear site plan helps reviewers approve the project without repeated questions. Incomplete or unclear plans are a common reason permits take longer, so it is worth taking the time to get the drawing right the first time. Your builder can coordinate the drawings and the supporting documents so the package is complete before it goes in.
Review and Inspections
After you submit, the permit goes through review. Reviewers may ask for corrections or more information, and the project moves forward once they approve. During construction, inspectors check key stages of the work, such as the foundation, framing, and mechanical systems, before the next phase can begin.
Permitting in Spokane County can move at different speeds depending on the project. Processing times and fees depend on the jurisdiction and the complexity of the project, so check with the permitting office for current details.
Preparing Before You Apply
Good preparation keeps site development and permitting in Spokane County moving. It also reduces back-and-forth with reviewers, which saves time. Here is a simple order to follow:
- Confirm which jurisdiction covers your parcel
- Review zoning, setbacks, and any critical area limits on your lot
- Gather your deed, survey, and any existing site information
- Start the septic or water planning that applies to your property
- Finalize your floor plan and prepare complete drawings
- Submit your permit application with a full, accurate site plan
If you are using a construction loan, your lender will also need your plans and budget, and the permit is typically part of the approval path. Adair works with Basis Home Loans, and speaking with them early helps you line up financing alongside your permit timeline.
Where Adair Fits In
You do not have to manage site development and permitting in Spokane County alone. Adair manages site preparation, permitting, trade coordination, and construction from start to finish. That means the team handles coordinating the site work and working through permit requirements while you focus on your plan and your selections.
Adair serves homeowners across Spokane County, including Cheney, Deer Park, Spokane, Spokane Valley, Medical Lake, Airway Heights, and surrounding areas. A network of trusted trade partners completes specialized work while Adair oversees and manages the build. Adair has been building since 1969 and has completed more than 25,000 homes, so working through the permit and site process is something we do every day. If you are comparing builders, ask each one how they handle permits, who coordinates the trades, and how site conditions are evaluated before a price is finalized.
What Comes After Permitting
Once site development and permitting in Spokane County are complete, construction begins with the foundation. In Washington, Adair build timelines run 8 to 10 months, beginning after the foundation is poured, and timelines are never guaranteed. Weather and inspection schedules can influence the pace, so a well prepared site and a complete permit package set you up for the best start.
Start With a Site Visit
The best way to understand what site development and permitting in Spokane County will mean for your property is to have an experienced team look at it in person. Schedule a site visit with Adair Homes, and we will review your lot, talk through your goals, and explain how we manage site development and permitting from developing your site to the final walkthrough.
