Building permits, zoning and land rules in Rexburg, Idaho

At a glance

Building permit

City application required for a new single-family home¹

Zoning

City zoning map identifies parcel regulations²

Septic permits

Eastern Idaho Public Health; state installation-permit rules apply³⁵

Owner-builder

Signed city homeowner exemption; state registration exemption has conditions⁶⁷

Private wells

IDWR drilling permit and licensed well driller required⁸

RV and tiny-home living

Unconfirmed; ask city Planning & Zoning about the specific parcel and use⁴

Who to call

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

Do you need a building permit in Rexburg, ID?

A new single-family home in Rexburg needs the city’s building-permit application, and the city application also covers additions, basement finishes, remodels and accessory structures.¹ Rexburg’s new-home process includes review and inspection of building, electrical, mechanical and plumbing work.¹ All construction projects inside Rexburg must comply with the city’s adopted building codes and ordinances.⁹

For a homeowner doing work on their own home, Rexburg requires a signed homeowner exemption in the application materials.⁶ Idaho’s separate contractor-registration exemption applies to owners doing their own work on their own land who do not intend to sell within 12 months; that exemption does not waive applicable building or trade permits.⁷

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

Use the City of Rexburg Building Department’s single-family application page and linked city permit account for a home project.¹ Call the city Building Department at (208) 372-2166 or email [email protected]; the city lists its address as 35 N 1st East, Rexburg, ID, 83440.¹

Rexburg’s new-home submittals include digital site and building plans, structural calculations and an energy compliance report, plus subcontractor work-acceptance forms and a property-line form signed by the builder.¹ The online process starts with a username and password, followed by an email confirmation and the appropriate project application.¹ Ask the Building Department for the current project fee and the inspection sequence before setting a construction budget or start date.¹

Does Rexburg have zoning, and what does it mean for your lot?

Rexburg has parcel-specific zoning, and the city’s zoning map identifies which regulations apply to a particular parcel.² The city’s comprehensive-plan map describes desired growth land uses; use the zoning map to identify parcel regulations rather than treating the growth map as the parcel’s zoning answer.⁴

Ask Rexburg Planning & Zoning at (208) 372-2167 for the parcel’s district and the applicable lot-size, setback, height and lot-coverage standards before drawing a home footprint.⁴ We could not confirm a numeric city minimum dwelling size or a reliable citywide accessory-dwelling answer; ask the same office about the proposed home or accessory apartment.⁴ Rexburg requires plats for subdivisions resulting in more than 2 buildable lots, with supporting landscape, infrastructure and intended-use materials.¹⁰

How do septic permits and private wells work inside Rexburg?

Eastern Idaho Public Health administers onsite wastewater rules for Madison County, including a Rexburg property proposed for septic service.³ Idaho requires a valid installation permit for installing, expanding, modifying or repairing an individual or subsurface sewage system, subject to the state’s specified exceptions.⁵ The local health-district contact is the Madison County Office at (208) 356-3239, at 314 North 3rd East, Rexburg, ID 83440.¹¹

An Idaho septic system cannot receive wastewater until the final installation inspection; where preparation is required, give at least 48 hours’ notice, excluding weekends and holidays.¹² We could not confirm Rexburg’s mandatory public-utility connection conditions, so ask the city before assuming septic is an available alternative.⁴ A private well requires an IDWR drilling permit before drilling and an IDWR-licensed well driller, even where domestic water use has a separate water-right exemption.⁸

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

We could not confirm whether Rexburg allows private-land RV occupancy, temporary camping or tiny-home occupancy; ask city Planning & Zoning about the parcel and the exact proposed use before buying for that purpose.⁴ Request separate answers for living in an RV while building, a permanent tiny house and an accessory dwelling, rather than assuming the same approval covers each proposal.⁴

Rexburg’s adopted building codes apply to construction projects, but that fact alone does not establish zoning permission for a tiny home or RV residence.⁹² Idaho permits qualifying temporary nondischarging wastewater systems under specified design and maintenance conditions; that sanitation exception does not establish Rexburg land-use permission for RV living.⁵²

What are the steps to building a home in Rexburg?

1. Ask Rexburg Planning & Zoning to identify the parcel’s zoning and review the proposed use and home footprint against that district’s regulations.²⁴
2. Resolve the wastewater route before finalizing the site layout: ask the city about utility-connection conditions, and contact Eastern Idaho Public Health if proposing septic.⁴³
3. Prepare Rexburg’s digital site and building plans, structural calculations, energy compliance report and required builder or subcontractor forms.¹
4. Create the city permit account, confirm the email and submit the project application; sign the homeowner exemption if doing work on your own home.¹⁶
5. Arrange the applicable city inspections throughout construction; Rexburg’s building final follows the other passed final inspections, when the building is complete and ready for occupancy.¹³

What should you check before buying near Rexburg city limits?

For land outside Rexburg, use the Madison County guide for the county’s building and zoning answers; Idaho’s county zoning authority applies to unincorporated land.¹⁴ Rexburg’s planning page also describes an impact-area agreement under which the county upholds city rules outside city boundaries, so ask Planning & Zoning whether the parcel falls within that area.⁴

We could not confirm a complete Rexburg driveway-access or floodplain-development rule; ask city Planning & Zoning which office must review the proposed access and flood exposure before closing.⁴ If access involves state highway right-of-way, ITD requires a right-of-way permit for uses other than regular travel.¹⁵ Keep regional cost estimates separate from parcel costs: Madison County’s effective property-tax rate is about 0.5%, a county-level figure rather than a Rexburg parcel assessment.¹⁶

Watch-outs

• Rexburg’s homeowner exemption does not remove applicable building or trade permits; the state contractor-registration exemption has its own conditions.⁶⁷
• We could not confirm Rexburg’s RV or tiny-home occupancy rules; obtain a parcel-specific answer from city Planning & Zoning before relying on either housing option.⁴
• Rexburg’s impact area can involve city development rules on land outside city boundaries; ask Planning & Zoning to confirm the parcel’s status.⁴

Sources

1. City of Rexburg Building Department (rexburg.org)
2. City of Rexburg Development Code, Ordinance No. 1026 (Rexburg), quoted and re-checked
3. Septic and Septage, quoted and re-checked
4. City of Rexburg Planning & Zoning (rexburg.org)
5. IDAPA 58.01.03 – Individual/Subsurface Sewage Disposal Rules and Rules for Cleaning of Septic Tanks (Idaho statewide rule), quoted and re-checked
6. Single Family Home (Rexburg), quoted and re-checked
7. Frequently Asked Questions (FAQ) - Division of Occupational and Professional Licenses (Idaho statewide rule), quoted and re-checked
8. Wells Overview (Idaho statewide rule), quoted and re-checked
9. Codes & Standards (Rexburg), quoted and re-checked
10. Planning Applications (Rexburg), quoted and re-checked
11. Eastern Idaho Public Health - Madison County Office (eiph.id.gov)
12. IDAPA 58.01.03 Individual/Subsurface Sewage Disposal Rules (Idaho statewide rule), quoted and re-checked
13. Inspections Required (Rexburg), quoted and re-checked
14. Idaho Code § 67-6504 — Planning and zoning commission (Idaho statewide rule), quoted and re-checked
15. Right of Way Services (Idaho statewide rule), quoted and re-checked
16. Effective property tax rate: Bolthole Index county data

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.