Building on Raw Land: The Permitting Sequence, Step by Step

Why order matters here

On land that already has a house, most of this sequence happened years ago and you never see it. On raw land, nothing is assumed: the county has no record that this specific parcel can support a structure until you generate that record yourself, permit by permit. Applying out of order is a common first-time-buyer mistake -- for example, submitting building plans before septic design is approved, only to have the house footprint conflict with where the drain field actually has to go.

The general sequence

• 1. Confirm zoning allows the use -- call the planning/zoning department and confirm your intended structure (single-family home, cabin, accessory dwelling) is a permitted use in that zoning district before spending money on anything else.
• 2. Perc test and septic design (if not on public sewer) -- the health department needs to approve a specific septic system layout for the site before you can site a house around it, since the drain field's location and required setbacks constrain where the structure can sit.
• 3. Well permit (if not on public water) -- a well permit and, in many jurisdictions, a water-quality/yield test are handled separately from the septic approval, though the two are reviewed together since a well and a septic drain field each require a minimum separation from the other.
• 4. Driveway/access and grading permits -- cutting a driveway, grading a building pad, or clearing significant vegetation can each require a separate permit from the septic and building permits, especially where the access crosses a ditch, wetland buffer, or county right-of-way.
• 5. Building permit -- once zoning, septic/well, and site work are cleared, the building department reviews the actual structural plans against the building code and issues the permit that lets construction start.
• 6. Trade permits and inspections -- electrical, plumbing, and HVAC work typically need their own permits and inspections during construction, in addition to the building permit itself, with a final inspection and certificate of occupancy closing out the process.

What makes raw land different from a house lot

A lot in an existing platted subdivision has usually already been confirmed buildable -- it perc-tested, it has road frontage, its lot size already cleared the zoning minimum. Raw, unplatted, or never-built-on land has none of that established yet, which is why perc testing and septic design generally have to happen before you can finalize where the house goes, not after. See our national guides to perc tests and septic systems for how those approvals work in detail.

Utility availability is the other major variable. If the parcel is not already served by public water, sewer, or a nearby power line, extending service to it -- or going fully off-grid with a well, septic system, and solar or a generator -- has to be planned before the building permit stage, since utility placement affects the site plan the building department will review.

Setbacks shape where the structure can actually go

Even after zoning confirms the use is allowed, the building has to sit within the buildable envelope defined by the lot's front, side, and rear setbacks -- and, if there is a septic system, outside the separate setback zone required between the drain field, the well, and the structure itself. On a small or oddly shaped raw lot, these overlapping setback requirements can shrink the usable building area more than a first-time buyer expects. See our national guide to setbacks for how that works.

Timeline and cost reality

Because each step in this sequence depends on the one before it, the whole process is inherently serial, not something that can be fully parallelized -- you generally cannot get a building permit finalized until septic design is approved, and you cannot finalize septic design until the perc test is done. Industry guidance for first-time land buyers commonly recommends budgeting for permitting and site work (driveway, well, septic, utility extension) as a distinct, sometimes substantial line item separate from the cost of the structure itself, and building in schedule slack for county review turnaround, which varies widely by jurisdiction and time of year.