Bolthole Index

Kootenai County, Idaho

Building permits, zoning and septic rules in Post Falls, Idaho

Post Falls, Idaho requires appropriate building and land-use permits for construction inside city limits, and the city administers its own zoning.12 The Post Falls Building Division handles building permits; Panhandle Health District handles septic systems where municipal sewer is unavailable.34 For land outside city limits, use the Kootenai County guide for the county’s building-permit rules.5

At a glance

Building permits
Required for applicable construction inside Post Falls; city Building Division issues them13
Zoning
City zoning applies inside Post Falls city limits2
Septic permits
Panhandle Health District, where public or municipal sewer is unavailable4
RV floodplain limits
In Areas of Special Flood Hazard, an allowed RV must stay fewer than 180 consecutive days and remain ready for highway use6
RV street parking
No more than 48 continuous hours at the same location or locations within the same block7
Owner-builder
Idaho’s contractor-registration exemption does not waive applicable building or trade permits8
Private wells
An IDWR drilling permit and licensed well driller are required before drilling9

Who to call

Building permits

Post Falls Building Division

City building, plumbing and electrical permits, plan review and inspections

208-773-8708

[email protected]

1st Floor of City Hall 408 N Spokane Street Post Falls ID 83854

Online permits →

Planning & zoning

Post Falls Planning Division

City zoning, land-use management and planning applications

208-773-8708

1st Floor of City Hall 408 N Spokane Street Post Falls ID 83854

Online permits →

Septic permits

Panhandle Health District, Environmental Health - Kootenai County

Septic (subsurface sewage disposal) permits, installer licensing and septic records for Kootenai County

(208) 415-5220

[email protected]

8500 N. Atlas Rd. Hayden, ID 83835

Contact details are copied from each office’s official page and were checked against it on October 11, 2026.

Off-grid gear

Going off-grid in Post Falls means bringing your own water and power. The kit we’d start with:

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Do you need a building permit in Post Falls, ID?

Post Falls requires all appropriate building and land-use permits for construction projects inside city limits; ask the Building Division which approvals apply to the proposed work before starting.1 The city Building Division performs plan review, issues building permits and inspects new and existing residential and commercial construction.3 Post Falls also issues plumbing and electrical permits and performs those inspections for work inside the city.3

An Idaho owner doing work on their own land may qualify for the contractor-registration exemption when the owner does not intend to sell within 12 months, but that exemption does not remove applicable building, trade or inspection requirements.8

Who issues building permits in Post Falls, and how do you apply?

Contact the Post Falls Building Division at 208-773-8708 for building-permit questions, or use [email protected]; the counter is on the first floor of City Hall.3 Post Falls accepts Building, Planning and Engineering applications through the Community Development Portal, where customers can upload plans, pay fees, schedule inspections and see inspection results.3

For a building inspection, call 208-457-3334 and leave the permit number, job address, inspection type and requested date.3 Inspection requests left after midnight cannot be scheduled for the following day, so plan the call before the work reaches its inspection stage.3

Does Post Falls have zoning, and what does it mean for a home site?

Post Falls administers its own zoning inside city limits and publishes a land-use chart identifying permitted, special and nonpermitted uses by zoning classification.2 The Post Falls Planning Division handles land-use management and planning applications; call 208-773-8708 with the parcel and proposed use to ask which city zoning requirements apply.10

A narrow lot can change the driveway layout: in R-2 (SF), lots 45 feet wide or less must have alley- or rear-loaded vehicular access.11 Ask Planning to confirm the district, allowed dwelling type, lot dimensions and placement requirements before choosing a house plan; city zoning and building-permit review are separate parts of the project.21

How do septic permits work inside Post Falls?

Panhandle Health District handles septic systems serving Post Falls properties that cannot connect to public or municipal sewer, and a septic permit is required for a new system or a new system location.4 Reach the district’s Kootenai County Environmental Health office at (208) 415-5220 or [email protected].12

Septic approval depends on sewage flow, house size and location, nearby wells and surface water, groundwater, soil conditions and proposed land use, so resolve wastewater feasibility before fixing the house location.13 District septic applications and issued septic permits are valid for 1 year; arrange renewal before expiration if construction is delayed.12 Idaho allows a septic permit to be denied when public or central wastewater treatment is reasonably accessible, so an off-grid plan does not guarantee approval to use septic instead of sewer.14

Can you live in an RV or tiny home on land in Post Falls?

Post Falls’ RV rule for Areas of Special Flood Hazard requires an RV to be an allowed zoning use or structure, remain fewer than 180 consecutive days, and be fully licensed and ready for highway use.6 The floodplain rule also requires wheels or a jacking system, quick-disconnect utility and security connections, and no permanently attached structures or additions.6 That conditional floodplain rule does not establish permission for year-round RV living elsewhere in Post Falls; ask the Planning Division about the proposed parcel and occupancy before relying on an RV during construction.610

Post Falls limits continuous RV parking or storage on a public street or alley to 48 hours at the same location or combination of locations within the same block.7 For a tiny home, ask Planning how the dwelling is classified and whether the district allows that use, then ask Building which construction approvals apply.21

Building a home in Post Falls: what are the steps in order?

  1. Ask Post Falls Planning to confirm the zoning classification and whether the proposed home use is permitted or needs special approval.210
  2. Establish the wastewater route: if municipal sewer is unavailable, take the house and site proposal to Panhandle Health District for septic review.413
  3. Create a city portal account, submit the applicable building and land-use applications, upload plans and documents, and track plan reviews.151
  4. Coordinate plumbing and electrical permits with the city Building Division and schedule the required building inspections as construction progresses.3
  5. If the project includes a private well, obtain the IDWR drilling permit before drilling and use an IDWR-licensed driller.9
  6. If access involves a state highway, obtain the applicable ITD encroachment approval before work in the highway right-of-way.16

Watch-outs

  • We could not confirm a general Post Falls minimum dwelling floor area or a private-land temporary-camping rule; ask the city Planning Division before buying for either use.10
  • Kootenai County’s owner-builder rules do not establish a city building-permit exemption; obtain the applicable Post Falls construction approvals.18
  • A manufactured home must be inspected and approved by DOPL or the authority having jurisdiction before occupancy in Idaho.17

Sources

  1. Standard Drawings | Post Falls, ID (Post Falls), quoted and re-checked
  2. Planning | Post Falls, ID (Post Falls), quoted and re-checked
  3. Post Falls Building Division (postfalls.gov)
  4. Septic Permits & Records – Panhandle Health District (Post Falls), quoted and re-checked
  5. Building | Kootenai County, ID, quoted and re-checked
  6. Post Falls Code § 15.44.160, Recreational vehicle standards (Post Falls), quoted and re-checked
  7. Post Falls Code § 10.20.060, Time limitation (Post Falls), quoted and re-checked
  8. Frequently Asked Questions (FAQ) - Division of Occupational and Professional Licenses (Idaho statewide rule), quoted and re-checked
  9. Wells Overview (Idaho statewide rule), quoted and re-checked
  10. Post Falls Planning Division (postfalls.gov)
  11. postfalls.gov (Post Falls), quoted and re-checked
  12. Panhandle Health District, Environmental Health - Kootenai County (panhandlehealthdistrict.org)
  13. Septic Permits & Records – Panhandle Health District, quoted and re-checked
  14. IDAPA 58.01.03 Individual/Subsurface Sewage Disposal Rules (Idaho statewide rule), quoted and re-checked
  15. Planning | Post Falls, ID (Post Falls), quoted and re-checked
  16. Types of Right-of-Way Encroachment Permits (Idaho statewide rule), quoted and re-checked
  17. Building Archives - Division of Occupational and Professional Licenses (Idaho statewide rule), quoted and re-checked

Written October 11, 2026 from the rules quoted below, each taken from an official source and re-checked by an independent reviewer. This is research, not legal advice: rules change, so confirm with the office before you buy or build.

Answers from the rulebook for Post Falls

Post Falls’s own rules

  • Building permitRequired

    Construction projects inside Post Falls city limits, including land-use and building work.

    • The city page says all appropriate permits are required for construction projects; exact permit exemptions were not located in the reviewed sources.
    “obtain all appropriate permits (including without limitation land use and building permits) concerning any construction project you undertake within the City of Post Falls.”
  • Local zoningPresent

    Land inside Post Falls city limits.

    • The city administers Title 18 zoning and publishes zoning district handouts and a land-use chart.
    “P = Permitted use S = Special use - = Nonpermitted use Land Use Category Zoning Classifications”
  • Living in an RVTemporary only (with conditions)

    Recreational vehicles in Areas of Special Flood Hazard inside Post Falls city limits.

    • The RV must be an allowed use or structure under the zoning code.
    • The RV may remain fewer than 180 consecutive days.
    • It must be fully licensed and ready for highway use, on its wheels or jacking system, attached only by quick-disconnect utilities and security devices, with no permanently attached structures or additions.

    maximum consecutive days: < 180 days

    “Be on the site for fewer than one hundred eighty (180) consecutive days; and B. Be fully licensed and ready for highway use”
    One more reviewed finding on this topic
    • Limited — Parking or storage of recreational vehicles on the same public street or public alley location inside Post Falls city limits.
      “No Vehicle or Recreational Vehicle shall be Parked or stored continuously at the same location or combination of locations within the same block on any Public Street or public Alley on any Public Street or Alley in the City for more than forty-eight (48) hours.”
  • Driveway accessLimited

    R-2 (SF) lots 45 feet wide or less inside Post Falls city limits.

    • Vehicular access must be alley- or rear-loaded for lots 45 feet or less.

    lot-width threshold: <= 45 ft (alley/rear-loaded access required)

    “R2 (SF) - Vehicular access to Lots of forty-five feet (45') or less must be alley/rear loaded.”
  • Permit processPublished (with conditions)

    Building, planning, and engineering applications inside Post Falls city limits.

    • Applicants create an account in the online permit portal.
    • Applicants can apply, upload plans and documents, pay fees online, track plan reviews, and schedule inspections from the dashboard.
    “Customers can apply, upload plans and documents, pay fees online, and track and schedule their inspections on their customer dashboard page.”

Rules another office applies inside Post Falls

Post Falls does not set these itself; the county, a health district or the state does, and they apply to every address inside its limits.

  • Off-grid sanitationLimited

    On-site sewage disposal inside Post Falls city limits where connection to public or municipal sewer is unavailable.

    • Panhandle Health District addresses sewage disposal for properties unable to connect to public or municipal sewer.
    • A septic permit is required for a new system or new location and site-specific conditions apply.
    “properties that are unable to connect to public or municipal sewer systems. Permits are required for all subsurface sewage disposal systems in Idaho.”

Still unanswered

We looked and could not find an official answer yet. Silence is not permission; ask Post Falls or Kootenai County directly.

  • Owner-builder exemption — Owner-builder work inside Post Falls city limits.
  • Minimum dwelling size — General single-family dwellings in Post Falls residential districts.
  • Camping on your land — Temporary camping on private land inside Post Falls city limits outside public parks.
  • Well permit — Private wells serving property inside Post Falls city limits.
  • Agricultural exemption — Agricultural or farm-building exemptions inside Post Falls city limits.
2 more unanswered
  • Subdividing land
  • Short-term rentals

Each answer was extracted from an official source and independently re-checked against that source by a second reviewer. That is an evidence check, not legal advice. Rules change; confirm with the authority before you buy or build.

Unanswered questions are usually a sign that Post Falls publishes no rule on the point, not that none exists. Kootenai County’s page lists the county offices to call.

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