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Multi-Family Residence / Commercial Building Permit in Rexburg, Idaho

Required for new multi-family residential (apartment) and commercial building construction in Rexburg, reviewed against the 2018 IBC and 2018 IECC (Commercial) as adopted by the City. Commercial plans must be stamped by a licensed Idaho architect or engineer. Rexburg has no distinct Tenant Improvement, commercial-remodel, or 'change of use' permit product. The City's own 'Commercial Buildings' application page (rexburg.org/o/cor/page/commercial-building) states this single application covers 'New Construction, Addition, Remodel, Accessory Structures etc.,' explicitly defining 'Remodel' as 'renovation or remodeling of an existing commercial structure or space' -- the same application category as new construction, not a separate product. Its Requirements section is likewise headed 'For New Construction or Change of Occupancy,' folding change-of-occupancy work into this same application and requirements list rather than a distinct process.

Verified 2026-08-21 · Source

When you need this permit

  • Building permit required for new multi-family residential and commercial construction
  • Plans reviewed against the 2018 IBC and 2018 IECC (Commercial) as adopted by the City of Rexburg
  • Commercial project plans must be stamped by a licensed Idaho architect or engineer
  • Multi-family fee estimate is based on R-2 Occupancy and Type VB Construction per the IBC Building Valuation table
  • Plan submittals must meet the City's Digital Plan Submission Standards (vector-based PDF, bookmarked pages, architect/engineer stamps, title sheet with square footage/occupancy group/construction type/scope of work)
  • Create an account on the City's Public Portal (apply.rexburg.org/publicapp) to submit the application online
  • Tenant improvements, interior remodels, and change-of-occupancy work in existing commercial space are submitted under this same 'Commercial Buildings' application -- there is no separate TI/remodel application category. Per the City's Commercial Buildings page, 'Remodel' (renovation/remodeling of an existing commercial structure or space) is one of four project types (New Construction, Addition, Remodel, Accessory Structure) covered by this single application, and the listed Requirements are headed 'For New Construction or Change of Occupancy,' folding change-of-occupancy scope in as well rather than routing it to a distinct process

Required documents

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Fee schedule

Multi-Family Building Permit Fee (estimate) — 4-Plex, 3,600 sq ftCity of Rexburg Multi Family Residence Fee Estimator (building fees only, average estimate)
$3,500.00
Multi-Family Building Permit Fee (estimate) — 6-Plex, 6,000 sq ftCity of Rexburg Multi Family Residence Fee Estimator
$5,200.00
Multi-Family Building Permit Fee (estimate) — 12-Plex, 12,000 sq ftCity of Rexburg Multi Family Residence Fee Estimator
$8,700.00
Multi-Family Building Permit Fee (estimate) — 20-Unit, 20,000 sq ftCity of Rexburg Multi Family Residence Fee Estimator
$13,100.00
Multi-Family Building Permit Fee (estimate) — 30-Unit, 30,000 sq ftCity of Rexburg Multi Family Residence Fee Estimator
$18,700.00
Plan Review FeeCity of Rexburg Multi Family Residence Fee Estimator
10% of the calculated Building Permit fee
MEP Cost (per discipline: mechanical, electrical, plumbing) — 4 units + 1 buildingCity of Rexburg Multi Family Residence Fee Estimator; formula is $65.00 per unit + $130.00 per building
$390.00
MEP Cost (per discipline) — 6 units + 1 buildingCity of Rexburg Multi Family Residence Fee Estimator
$520.00
MEP Cost (per discipline) — 12 units + 1 buildingCity of Rexburg Multi Family Residence Fee Estimator
$910.00
MEP Cost (per discipline) — 20 units + 1 buildingCity of Rexburg Multi Family Residence Fee Estimator
$1,430.00
MEP Cost (per discipline) — 30 units + 1 buildingCity of Rexburg Multi Family Residence Fee Estimator
$2,080.00
Water Meter — 3/4 inchCity of Rexburg Multi Family Residence Fee Estimator
$732.00
Water Meter — 1 inchCity of Rexburg Multi Family Residence Fee Estimator
$936.00
Water Meter — 1.5 inch, outsideCity of Rexburg Multi Family Residence Fee Estimator
$1,489.00
Water Meter — 1.5 inch, insideCity of Rexburg Multi Family Residence Fee Estimator
$1,217.00
Water Meter — 2 inch, outsideCity of Rexburg Multi Family Residence Fee Estimator
$3,269.00
Water Meter — 2 inch, insideCity of Rexburg Multi Family Residence Fee Estimator
$2,927.00
Commercial Building Permit Fee (estimate) — by square footage
City of Rexburg Commercial Permit Fee Estimator page (rexburg.org/o/cor/page/commercial-fee-est), read from the page's static fee table on 2026-08-21 — building fees only, estimates based on B… Show full citationCity of Rexburg Commercial Permit Fee Estimator page (rexburg.org/o/cor/page/commercial-fee-est), read from the page's static fee table on 2026-08-21 — building fees only, estimates based on B Occupancy and Type VB Construction from the IBC Building Valuation Table; review (plan check) fees are 10% of the calculated building fee, and the City states these are estimates only that may not fully reflect the cost of permit. Supersedes this entry's earlier finding that the commercial figures were rendered in an unextractable dynamic table — the figures are now published as static text on that dedicated page.
2,500 sq ft: $3,500.00; 4,500 sq ft: $5,500.00; 6,500 sq ft: $7,000.00; 8,500 sq ft: $8,500.00
Commercial Mechanical / Electrical / Plumbing Fee (per discipline, valuation-based)City of Rexburg Commercial Permit Fee Estimator page (rexburg.org/o/cor/page/commercial-fee-est), read 2026-08-21. The page's own worked examples confirm the formula exactly: $10,000 valuation = $260.00; $90,000 = $1,060.00; $105,000 = $1,185.00.
First $10,000 of contractor valuation bid: 2% of total cost + $60; $10,001 to $100,000: 1% of (total cost − $10,000) + $260; above $100,000: 0.5% of (total cost − $100,000) + $1,160
Impact Fees (streets, parks/trails, police, fire) and Capacity Fees (water, sewer)Determined by Public Works; not published as a static figure on the Building Department's fee estimator pages ('IMPACT FEES TO BE DETERMINED BY PUBLIC WORKS'). Contact Public Works or the Chief Finance Officer (finance@rexburg.org, (208) 372-2343) for current amounts.
Not published — contact the department

Review timeline

Plan reviewRexburg’s published plan-review target
Up to 10 business days

How long did your Multi-Family Residence / Commercial Building Permit permit actually take in Rexburg?

Anonymous — one question, no email. Answers are combined and only shown once at least 5 people have reported.

Inspection process

  1. 1

    Layout & Footing

    Lot corners staked before excavation; footing made after poles/piers set or trenched/basement excavated; forms and reinforcing in place

  2. 2

    Foundation

    Excavations for thickened slabs supporting bearing walls/partitions/structural supports/equipment; all forms and reinforcing steel in place

  3. 3

    Plumbing Underground

    Any plumbing under slab/concrete floor, inspected before concrete is poured

  4. 4

    Sheeting

    Inspected for nail separation, prior to plumbing/electrical/mechanical work

  5. 5

    Plumbing / HVAC / Electrical Rough-In

    Made prior to covering or concealment, before framing inspection

  6. 6

    Framing

    After roof, masonry, all framing, fire stopping, draft stopping, bracing, and house wrap are in place

  7. 7

    Insulation

    Outside envelope inspection for energy code compliance

  8. 8

    Drywall

    After interior wallboard is in place, before texture and taping/finishing

  9. 9

    Electrical / Plumbing / HVAC Final

    All systems in place, fixtures set, ready for occupancy

  10. 10

    Building Final

    Made after all other finals have passed; building completed and ready for occupancy

See the full Rexburg inspection guide — scheduling & re-inspection fees →

Tips

  • The multi-family fee estimate is explicitly based on R-2 Occupancy, Type VB Construction from the IBC Building Valuation table — a different occupancy/construction type will change the actual valuation-based fee.
  • Water meter fees for multi-family projects are itemized separately by meter size and inside/outside placement.
  • Commercial building fee estimates (by square footage, B Occupancy / Type VB) and the valuation-based commercial MEP fee formula are published on the City's dedicated Commercial Permit Fee Estimator page (rexburg.org/o/cor/page/commercial-fee-est); the City labels all figures estimates only — confirm final fees with the Building Department, (208) 372-2166.
  • Commercial project plans must be stamped by a licensed Idaho architect or engineer before submission.
  • The City publishes no distinct Tenant Improvement, commercial-remodel, or 'change of use' permit product, application, or fee line — not on the Building Permit Applications page, the Commercial Buildings page, the Codes & Standards page, or the Building FAQ page. The City's Commercial Buildings application page (rexburg.org/o/cor/page/commercial-building) explicitly lists 'Remodel' — defined as 'renovation or remodeling of an existing commercial structure or space' — as one of four project types (alongside New Construction, Addition, and Accessory Structure) covered by this same 'Commercial Buildings' application, and its Requirements section is headed 'For New Construction or Change of Occupancy,' meaning change-of-occupancy work also uses this same application/requirements set rather than a separate process. Because fees on this application are only published as square-footage/valuation-based new-construction estimate tables (with no separate remodel/TI valuation basis or discounted-scope fee schedule published), a remodel-scope project's exact fee is not derivable from the public site — confirm with the Building Department, (208) 372-2166 or building@rexburg.org, before budgeting a remodel/TI project.

Frequently asked questions

Rexburg requires a multi-family residence / commercial building permit for: Building permit required for new multi-family residential and commercial construction; Plans reviewed against the 2018 IBC and 2018 IECC (Commercial) as adopted by the City of Rexburg; Commercial project plans must be stamped by a licensed Idaho architect or engineer; Multi-family fee estimate is based on R-2 Occupancy and Type VB Construction per the IBC Building Valuation table; Plan submittals must meet the City's Digital Plan Submission Standards (vector-based PDF, bookmarked pages, architect/engineer stamps, title sheet with square footage/occupancy group/construction type/scope of work); Create an account on the City's Public Portal (apply.rexburg.org/publicapp) to submit the application online; Tenant improvements, interior remodels, and change-of-occupancy work in existing commercial space are submitted under this same 'Commercial Buildings' application -- there is no separate TI/remodel application category. Per the City's Commercial Buildings page, 'Remodel' (renovation/remodeling of an existing commercial structure or space) is one of four project types (New Construction, Addition, Remodel, Accessory Structure) covered by this single application, and the listed Requirements are headed 'For New Construction or Change of Occupancy,' folding change-of-occupancy scope in as well rather than routing it to a distinct process. If your project isn't listed, confirm with City of Rexburg Building Department at (208) 372-2166 before starting work.

In Rexburg, the published Multi-Family Building Permit Fee (estimate) — 4-Plex, 3,600 sq ft is: $3,500.00. Additional published fees: Multi-Family Building Permit Fee (estimate) — 6-Plex, 6,000 sq ft — $5,200.00; Multi-Family Building Permit Fee (estimate) — 12-Plex, 12,000 sq ft — $8,700.00; Multi-Family Building Permit Fee (estimate) — 20-Unit, 20,000 sq ft — $13,100.00; Multi-Family Building Permit Fee (estimate) — 30-Unit, 30,000 sq ft — $18,700.00; Plan Review Fee — 10% of the calculated Building Permit fee; MEP Cost (per discipline: mechanical, electrical, plumbing) — 4 units + 1 building — $390.00; MEP Cost (per discipline) — 6 units + 1 building — $520.00; MEP Cost (per discipline) — 12 units + 1 building — $910.00; MEP Cost (per discipline) — 20 units + 1 building — $1,430.00; MEP Cost (per discipline) — 30 units + 1 building — $2,080.00; Water Meter — 3/4 inch — $732.00; Water Meter — 1 inch — $936.00; Water Meter — 1.5 inch, outside — $1,489.00; Water Meter — 1.5 inch, inside — $1,217.00; Water Meter — 2 inch, outside — $3,269.00; Water Meter — 2 inch, inside — $2,927.00; Commercial Building Permit Fee (estimate) — by square footage — 2,500 sq ft: $3,500.00; 4,500 sq ft: $5,500.00; 6,500 sq ft: $7,000.00; 8,500 sq ft: $8,500.00; Commercial Mechanical / Electrical / Plumbing Fee (per discipline, valuation-based) — First $10,000 of contractor valuation bid: 2% of total cost + $60; $10,001 to $100,000: 1% of (total cost − $10,000) + $260; above $100,000: 0.5% of (total cost − $100,000) + $1,160. These are the jurisdiction's own published figures — see the fee schedule table and source citations on this page.

Rexburg's published plan-review target for a multi-family residence / commercial building permit is Up to 10 business days.

You'll need: Apartment Buildings / Commercial Buildings Permit Application; Full Construction Drawing Set (stamped). See the required-documents checklist on this page for details on each.

Rexburg requires 10 inspection(s) for a multi-family residence / commercial building permit, in order: Layout & Footing, Foundation, Plumbing Underground, Sheeting, Plumbing / HVAC / Electrical Rough-In, Framing, Insulation, Drywall, Electrical / Plumbing / HVAC Final, Building Final. Schedule each through City of Rexburg Building Department ((208) 372-2166).

Apply through City of Rexburg Building Department at 35 N 1st East, Rexburg, ID 83440. Phone: (208) 372-2166, email: building@rexburg.org. Office hours: City Hall Open Hours: M-Th 7:30 am - 5:30 pm, F 7:30 am - 12:30 pm. Main City switchboard: (208) 359-3020; Building Department direct line: (208) 372-2166.. Official information: https://www.rexburg.org/o/cor/page/building.

This is addressed on the City's Building FAQ page, but the specific answer text is rendered as a JS-collapsed accordion not extractable as static text; generally, commercial project plans submitted to the City must be stamped by a licensed Idaho architect or engineer per the Codes & Standards page. Contact the Building Department at (208) 372-2166 to confirm any owner-design exceptions.

No distinct tenant-improvement/TI or commercial-remodel permit product was found. The City's own Commercial Buildings application page lists 'Remodel' (renovation or remodeling of an existing commercial structure or space) as one of the same application's four covered project types (New Construction, Addition, Remodel, Accessory Structure), and its Requirements section is headed 'For New Construction or Change of Occupancy' — so change-of-occupancy work also runs through this same application rather than a separate one. This is a confirmed absence after checking the Building Permit Applications page, the Commercial Buildings page itself, the Codes & Standards page, and the Building FAQ page — not an unresearched gap. No remodel/TI-specific fee schedule or review-timeline SLA distinct from the general new-construction figures was found published; contact the Building Department at (208) 372-2166 to confirm cost and timeline for a specific remodel/TI scope.

Sources & verification

Verified against official sources. Last reviewed 2026-08-21.

Fee schedules

Applications & forms

Department & other records

Fees, timelines, and adopted codes are researched from each jurisdiction's published records — see how we verify. Requirements change and vary by project, so always confirm the current details with the Rexburg building department before you submit. PermitBase is an independent reference and is not affiliated with any government agency.

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