This is PermitBase’s published record for Troy as of 2026-07-04. It has since been superseded — see the current record. A historical record reflects what PermitBase had verified at that time; it may not capture a real-world change the jurisdiction had made but PermitBase had not yet verified, and it includes any errors we later corrected. Snapshots are never edited retroactively.
Troy building permits
VerifiedTroy, Montana — as published 2026-07-04.
Verified 2026-07-04 · Source
Codes adopted
Montana has a mandatory statewide building code administered by the Montana Department of Labor & Industry (DLI) Building Codes Bureau, amended by the Administrative Rules of Montana (ARM) Title 24, Chapter 301. Cities, counties, and towns may become 'certified' to locally administer permitting and inspection for all or part of the code; non-certified trades and non-certified project scopes in a partially-certified jurisdiction fall under direct state administration by the DLI Building Codes Bureau. Source: Montana DLI Building Codes Bureau, Certified City, County and Town Programs (bsd.dli.mt.gov/building-codes-permits).Troy is a Montana DLI-certified jurisdiction for Building (B), RESIDENTIAL ONLY, plus Swimming Pool (SP), within city limits; certified official on file with DLI: David Jones, (406) 295-9851. Verified directly against the DLI Building Codes Bureau's 'Montana Certified Local Government Program' roster PDF (fetched via browser-header curl and read directly with pdftotext, not taken on secondhand summary): 'Troy | B (residential only), SP | David Jones | 295-9851 | City Limits'. This means COMMERCIAL building permits within Troy city limits, and Electrical/Plumbing/Mechanical permits for ALL project types (residential and commercial), are issued DIRECTLY by the Montana DLI Building Codes Bureau, not the City. Source: https://bsd.dli.mt.gov/_docs/building-codes-permits/certified-city.pdfThe City of Troy's own 'Building Permit Requirements' packet (dated February 7, 2023, filename Building Permit Application 2022.docx/pdf) references the '2009 IBC-IRC' on its Inspection Record card ('REMEMBER 2009 IBC-IRC required the permit holder to notify the building official when work is ready for inspection') — the City's packet has not been refreshed to reference the current 2021-edition code, even though the statewide code in force is now the 2021 edition. This is reported as an observed inconsistency in the City's own published document, not an invented fact — directly parallel to the same inconsistency found in Libby's packet.Per the Montana DLI Building Codes Bureau's Current Codes page (statewide effective date June 11, 2022, applicable to all certified and state-enforced jurisdictions alike): 2021 IBC, 2021 IRC, 2021 IEBC, 2021 IMC, 2021 IFGC, 2021 IECC, 2021 ISPSC, 2021 UPC, 2020 NEC, 2017 ICC A117.1 Accessibility. Source: bsd.dli.mt.gov/building-codes-permits/current-codesTroy's own Building Permit Requirements packet does not separately name IECC, IEBC, or ISPSC edition years the way Libby's City page does — the City's packet references only the general 'City, State, and National regulations' framing and the 2009 IBC-IRC inspection-card citation noted above. No additional code-edition citations were found on the City's own materials beyond what is reported here; omitted rather than inferred.
Permit types & fees
Residential Building Permit (New Construction / Addition / Alteration / Repair)
VerifiedRequired for new single-family home construction, additions, alterations, and repairs within Troy city limits. Issued by the City of Troy under its DLI-certified local Building (B), RESIDENTIAL ONLY, program, using the City's own City of Troy Building Permit Application, reviewed by Building Inspector David Jones.
Verified 2026-07-04 · Source
Requirements
- Complete the City of Troy Building Permit Application: property location, owner/contractor/designer/electrician/plumber contact information, type of project (Residential, New/Addition/Alteration/Repair/Move/Demolition), description of the nature of the project, and estimated total cost (labor and materials)
- Submit one set of drawings/plans and specifications defining the scope, intent, and method of construction, typically including: (A) a site plan showing property lines, location of structures, existing/proposed utilities, parking areas, and adjacent streets/alleys; (B) floor plans showing use and relationship of spaces, sizes, doorways, windows, fixtures, stairways, and handicapped-accessible features if needed; (C) a section view through the building detailing size/type of materials and assembly method; (D) additional information may be required for commercial and multi-family structures or unusual/hazardous structures
- Construction may not begin until fees are paid and the permit is issued; separate electrical, plumbing, and mechanical permits issued by the State of Montana are required
- A Certificate of Occupancy must be issued before the building can be used
Required documents
- RequiredCity of Troy Building Permit ApplicationCity of Troy combined application form with Type of Project checkboxes (Commercial/Residential/New/Addition/Alteration/Repair/Move/Demolition), returned with all required plans and specifications to the City Building Official or City Hall at 301 E. Kootenai Avenue, Troy
- RequiredSite Plan / Floor Plan / Section View DrawingsOne set of plans showing property lines, structure location, utilities, floor plan dimensions, and construction section details per the City's Building Permit Requirements packet
Fee schedule
| Fee type | Amount | Notes |
|---|---|---|
| Total Valuation $1 to $500 | $24 | City of Troy Building Permit Requirements packet (dated February 7, 2023), Permit Fees table |
| Total Valuation $501 to $2,000 | $24 for the first $500, plus $3 for each additional $100 or fraction thereof, to and including $2,000 | City of Troy Building Permit Requirements packet, Permit Fees table |
| Total Valuation $2,001 to $40,000 | $69 for the first $2,000, plus $11 for each additional $1,000 or fraction thereof, to and including $40,000 | City of Troy Building Permit Requirements packet, Permit Fees table |
| Total Valuation $40,001 to $100,000 | $487 for the first $40,000, plus $9 for each additional $1,000 or fraction thereof, to and including $100,000 | City of Troy Building Permit Requirements packet, Permit Fees table |
| Total Valuation $100,001 to $500,000 | $1,027 for the first $100,000, plus $7 for each additional $1,000 or fraction thereof, to and including $500,000 | City of Troy Building Permit Requirements packet, Permit Fees table |
| Total Valuation $500,001 to $1,000,000 | $3,827 for the first $500,000, plus $5 for each additional $1,000 or fraction thereof, to and including $1,000,000 | City of Troy Building Permit Requirements packet, Permit Fees table |
| Total Valuation $1,000,000 to $5,000,000 | $6,327 for the first $1,000,000, plus $3 for each additional $1,000 or fraction thereof, to and including $5,000,000 | City of Troy Building Permit Requirements packet, Permit Fees table — this tier is not present in Libby's published packet but IS printed on Troy's own fee table |
| Total Valuation $5,000,001 and over | $18,327 for the first $5,000,000, plus $1 for each additional $1,000 or fraction thereof | City of Troy Building Permit Requirements packet, Permit Fees table |
| Investigation fee for work commenced without a permit | 50% of the combined plan review and building permit fee; minimum $250, maximum $1,000 | City of Troy Building Permit Requirements packet, quoting ARM 24.301.139 (Investigation Fees Assessed for Work Commencing Without Building Permit) directly |
Commercial Building Permit (State-Issued)
VerifiedBecause Troy's DLI Building certification is scoped to RESIDENTIAL ONLY, any commercial building permit (new construction, addition, alteration, repair, change of occupancy) anywhere within Troy city limits is issued DIRECTLY by the Montana DLI Building Codes Bureau in Helena, not by the City of Troy, under the 2021 IBC as adopted statewide.
Verified 2026-07-04 · Source
Requirements
- Application filed directly with the Montana Building Codes Bureau (not the City of Troy) for any commercial building project within Troy city limits
- Reviewed against the 2021 International Building Code (IBC) and other state-adopted commercial code editions (2021 IECC, 2017 ICC A117.1 Accessibility, etc.) per ARM Title 24, Chapter 301
- Apply by mail (Building Codes Bureau, PO Box 200517, Helena, MT 59620-0517) or online via ebiz.mt.gov
- Applicants should also confirm with the City of Troy whether local zoning or business-license requirements apply in addition to the state building permit
Required documents
- RequiredApplication for Commercial Building PermitMontana Building Codes Bureau statewide form; mailed with payment to Building Codes Bureau, PO Box 200517, Helena, MT 59620-0517, or filed online via ebiz.mt.gov
Fee schedule
| Fee type | Amount | Notes |
|---|---|---|
| Commercial building permit fee | The Montana Building Codes Bureau publishes a valuation-based commercial fee schedule on its Building Permits page/application forms, but a jurisdiction-specific dollar figure was not re-extracted for this record; the Bureau's own site directs fee questions to (406) 841-2056 / buildingcodes@mt.gov. Left null rather than estimated; this is the identical statewide schedule that would apply to any Montana location where the state issues commercial building permits directly. |
Swimming Pool Permit
VerifiedRequired for construction or installation of a swimming pool within Troy city limits. Troy is a Montana DLI-certified jurisdiction for Swimming Pool (SP) permitting, using the same City of Troy Building Permit Application used for other building work.
Verified 2026-07-04 · Source
Requirements
- Complete the City of Troy Building Permit Application, describing the nature of the project (pool construction/installation) and estimated total cost
- Submit a site plan showing pool location, setbacks, and barrier/fencing plan
- Reviewed and issued by the City of Troy Building Inspector under the City's DLI Swimming Pool (SP) certification — not routed to the state, unlike electrical/plumbing/mechanical work associated with the pool installation, which still requires separate state permits
Required documents
- RequiredCity of Troy Building Permit ApplicationSame combined City of Troy application form used for other building/construction work, describing the pool project and estimated cost
- RequiredSite Plan (Pool Location and Barrier/Fencing)Site plan showing pool location, setbacks, and required safety barrier/fencing
Fee schedule
| Fee type | Amount | Notes |
|---|---|---|
| Building Permit Fee — valuation-based (same table used for other building permits) | $24 minimum ($1-$500 valuation), scaling per the City of Troy Permit Fees table (e.g., $69 for first $2,000 plus $11 per additional $1,000 up to $40,000) | City of Troy Building Permit Requirements packet, Permit Fees table; no separate/dedicated swimming-pool-specific fee line was found published by the City distinct from the general valuation-based building permit fee table |
Electrical Permit (State-Issued)
VerifiedBecause Troy holds no DLI Electrical certification, electrical work anywhere within Troy city limits — residential or commercial — requires a permit issued directly by the Montana DLI Building Codes Bureau in Helena, not by the City of Troy, under the 2020 National Electrical Code (NEC).
Verified 2026-07-04 · Source
Requirements
- Application must be signed and dated by the licensed electrical contractor's person in charge, or filed as a homeowner permit for owner-performed work where allowed
- Payment must be submitted with the application; incomplete applications are returned unprocessed
- Property address, GEOCODE/parcel/lot/block, owner information, and power company must be provided
- Apply in accordance with Title 50, Chapter 60, Section 604, MCA and ARM 24.301.431
Required documents
- RequiredApplication for Residential (or Commercial) Electrical PermitMontana Building Codes Bureau statewide form (BCP-1); mailed with payment to Building Codes Program, PO Box 200517, Helena, MT 59620-0517, or filed online via ebiz.mt.gov
Fee schedule
| Fee type | Amount | Notes |
|---|---|---|
| Single Family Dwelling or Cabin — up to 200-amp service (includes meter base and attached garages if wired at the same time) | $200 | Montana Building Codes Bureau, Application for Residential Electrical Permit (BCP-1) — same statewide fee schedule applied to all non-electrically-certified Montana jurisdictions, including Troy, as documented in this database's anaconda-deer-lodge.json and libby.json records |
| Single Family Dwelling or Cabin — 201 to 400-amp service | $380 | Montana Building Codes Bureau, Application for Residential Electrical Permit (BCP-1) |
| Residential Change of Service — exterior meter base & interior/exterior main disconnect only | $45 | Montana Building Codes Bureau, Application for Residential Electrical Permit (BCP-1) |
Plumbing Permit (State-Issued, incl. Water Heater)
VerifiedBecause Troy holds no DLI Plumbing certification, plumbing work anywhere within Troy city limits — including water heater installation/replacement — requires a Plumbing Permit issued directly by the Montana DLI Building Codes Bureau in Helena, not by the City of Troy, under the 2021 Uniform Plumbing Code.
Verified 2026-07-04 · Source
Requirements
- Application must be signed by the Master Plumber and include the Master Plumber License Number, or filed as a homeowner permit for owner-performed work where allowed
- Property address, county, and whether the job is inside city limits must be indicated
- Type of Building and Type of Work must be indicated; sewer service type (public/septic) and potable water source must be indicated
- Apply in accordance with Title 50, Chapter 60, Section 505, MCA and ARM 24.301.301 / 24.301.361
Required documents
- RequiredApplication for Plumbing Permit (BCP-1)Montana Building Codes Bureau statewide form; mailed with payment to Building Codes Bureau, PO Box 200517, Helena, MT 59620-0517, or filed online via ebiz.mt.gov
Fee schedule
| Fee type | Amount | Notes |
|---|---|---|
| Each NEW water heater (or replacement) | $25 | Montana Building Codes Bureau, Application for Plumbing Permit (BCP-1) statewide Fee Schedule — same schedule applied to all non-plumbing-certified jurisdictions, including Troy |
| Each plumbing fixture or trap | $10 per fixture/trap | Application for Plumbing Permit (BCP-1) statewide Fee Schedule |
Mechanical / HVAC Permit (State-Issued)
VerifiedBecause Troy holds no DLI Mechanical certification, mechanical/HVAC work anywhere within Troy city limits requires a Mechanical Permit issued directly by the Montana DLI Building Codes Bureau in Helena, not by the City of Troy, under the 2021 International Mechanical Code and International Fuel Gas Code.
Verified 2026-07-04 · Source
Requirements
- Project Value must be provided; permit fee is calculated from the state's valuation-based fee schedule
- Type of Building and Type of Work must be indicated
- Boiler work requires a separate Boiler Permit form, not the Mechanical Permit
- Apply in accordance with Title 50, Chapter 60, Section 104, MCA and ARM 24.301.172
Required documents
- RequiredApplication for Mechanical Permit (BCP-1)Montana Building Codes Bureau statewide form; mailed with payment to Building Codes Bureau, PO Box 200517, Helena, MT 59620-0517, or filed online via ebiz.mt.gov
Fee schedule
| Fee type | Amount | Notes |
|---|---|---|
| Mechanical Permit — Project value $0-$10,000 | $48 for the first $1,000, plus $14 for each additional $1,000 or fraction thereof | Montana Building Codes Bureau, Application for Mechanical Permit (BCP-1) statewide Fee Schedule — same schedule applied to all non-mechanically-certified jurisdictions, including Troy |
Deck / Accessory Structure Permit
VerifiedRequired for decks, detached garages, and storage sheds 120 square feet or larger within Troy city limits, using the City's own City of Troy Building Permit Application under its residential Building (B) certification. Play houses/storage sheds under 120 square feet are exempt.
Verified 2026-07-04 · Source
Requirements
- Complete the City of Troy Building Permit Application with the appropriate Type of Project checkbox (Residential / Addition) and a description of the deck, garage, or accessory structure
- Submit a site plan showing the structure's location, dimensions, and setbacks from property lines, plus a section view/detail sufficient to show size and type of materials and assembly method
- Structures under 120 square feet in floor area (play houses/storage sheds) are exempt from a building permit; fences under 6 feet and retaining walls under 4 feet are also exempt
Required documents
- RequiredCity of Troy Building Permit ApplicationCity of Troy combined application form, Residential/Addition checked, describing the deck or accessory structure project
- RequiredSite Plan and Construction DetailSite plan showing structure location/dimensions/setbacks, plus a section-view detail of framing and materials
Fee schedule
| Fee type | Amount | Notes |
|---|---|---|
| Building Permit Fee — valuation-based (same table used for other building permits) | $24 minimum ($1-$500 valuation), scaling per the City of Troy Permit Fees table | City of Troy Building Permit Requirements packet, Permit Fees table; no separate deck-specific or accessory-structure-specific fee line was found published by the City distinct from the general valuation-based building permit fee table |
Demolition / Building Move Permit
VerifiedRequired for demolition or removal of any structure within Troy city limits, and for moving a structure, using the same City of Troy Building Permit Application with 'Demolition' or 'Move' checked under Type of Project. An asbestos/vermiculite inspection requirement applies before demolition, per the City's own packet and the Montana Asbestos Control Act.
Verified 2026-07-04 · Source
Requirements
- Complete the City of Troy Building Permit Application with 'Demolition' or 'Move' checked under Type of Project, including a description of the nature of the project and estimated cost
- Per ARM 17.74.354 and the City's own Building Permit Requirements packet: prior to any demolition or renovation, the owner/operator must ensure the facility is thoroughly inspected by a department-accredited asbestos inspector to determine whether asbestos-containing materials (including vermiculite) are present
- Contact the Asbestos Resource Program (ARP) Hotline at (406) 291-5335 before starting any job with potential asbestos exposure risk, per the City's own packet
- If vermiculite is found: for small quantities, wet the material and call the ARP Hotline (do not use a regular vacuum; HEPA vacuums are effective on small indoor quantities); for larger quantities, do not disturb the material — leave it alone and call the ARP Hotline
- During demolition: use water to moisten the area, rinse equipment used in the work area, keep debris wet and covered with a tarp during transport, and dispose of debris according to local, state, and federal landfill requirements, per the City's own packet
Required documents
- RequiredCity of Troy Building Permit Application (Demolition/Move)Same combined City of Troy form with 'Demolition' or 'Move' selected under Type of Project
- RequiredAsbestos Inspection DocumentationDocumentation of a department-accredited asbestos inspection, required by ARM 17.74.354 before demolition/renovation; coordinate with the Asbestos Resource Program (ARP) Hotline, (406) 291-5335
Fee schedule
| Fee type | Amount | Notes |
|---|---|---|
| Building/Demolition permit fee — valuation-based (same table) | $24 minimum ($1-$500 valuation), scaling per the City of Troy Permit Fees table | City of Troy Building Permit Requirements packet, Permit Fees table; no separate demolition-specific fee or bond amount was found published for Troy — this is reported as a genuine small-town publication gap after direct review of the City's packet, not an invented figure |
Sources & verification
Verified against official sources. Last reviewed 2026-07-04.
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 Troy building department before you submit. PermitBase is an independent reference and is not affiliated with any government agency.