Polk County's Planning and Zoning Department at 5885 North East Fourteenth Street, on the county's Public Works campus north of Des Moines, permits and inspects construction in unincorporated Polk County. The county is the most populous in Iowa, but a dozen cities sit inside it — Des Moines, West Des Moines, Ankeny, Urbandale, Clive, Johnston, Altoona, Pleasant Hill and others — each permitting its own construction, so the county's territory is the land between them.
That land is under sustained annexation pressure as the metropolitan area expands, which makes the jurisdiction question live rather than settled: a parcel that is county today may be city by the time a permit is filed. As everywhere in Iowa, the statewide provisions apply whatever the county has adopted — the energy conservation requirements, the state fire code and the state plumbing and electrical codes — and the energy compliance statement goes with every application other than a one- or two-unit residential remodel.
This guide covers unincorporated Polk County. Des Moines, West Des Moines, Ankeny, Urbandale, Clive, Johnston, Altoona, Pleasant Hill, Windsor Heights and Grimes permit their own construction inside their limits.
The county's map is the gaps between cities. With a dozen incorporated cities inside it, Polk County's own permitting authority covers only the unincorporated land between them — and annexation moves that boundary steadily. On a parcel anywhere near a city edge, confirm the jurisdiction at the time of filing rather than relying on a purchase-date understanding.
What requires a building permit in Polk County?
Iowa splits its building code into a part that applies everywhere and a part that does not. The State of Iowa Building Code sits at 661 Iowa Administrative Code, adopted under Iowa Code chapter 103A by the Building Code Bureau within the State Fire Marshal Division of the Department of Public Safety. Under chapter 103A a local jurisdiction has discretion to adopt the state code, to adopt a different code, or to adopt no building code at all — but certain portions apply to construction statewide regardless, most notably the energy conservation requirements at 661 IAC chapter 303. The state fire code and the state plumbing and electrical codes likewise run statewide through their own chapters and their own authorities. In Polk County the questions are what has been adopted locally, what applies whether or not it has been, and the county's adopted code and its shrinking unincorporated area.
Where Polk County has adopted a building code, that code draws the exemption line and the jurisdiction may amend it. Ordinary repairs generally need no permit; construction, alteration, repair, demolition and any change of occupancy generally do. The statewide provisions apply either way: an application for a building permit, other than one to renovate or remodel a residential building of one or two units, must include a statement that the construction will comply with all applicable energy conservation requirements.
Typically permit required
- Construction, alteration, repair, demolition or change of occupancy in unincorporated territory
- Zoning and subdivision approval from the county ahead of the building permit
- A statement of compliance with applicable energy conservation requirements, on every application except a one- or two-unit residential remodel
- New buildings, additions and structural work on an existing building
- Alterations, repairs and renovations, and any change of occupancy
- Decks, accessory structures above the local threshold, retaining walls and swimming pools
Often exempt
- Ordinary repairs and small accessory work below the county's adopted threshold, and one- and two-unit residential renovation from the energy statement requirement
- Ordinary repairs that do not alter structure, egress or systems
- Painting, papering, flooring, cabinets and similar finish work
- Small accessory structures below the locally adopted threshold — zoning still applies
- Renovation and remodelling of one- and two-unit residential buildings, from the energy statement requirement
What is local, and what applies regardless
The general building code is Polk County's choice. It may adopt the state code by ordinance, adopt something else, or adopt nothing; where it adopts the state code it may also adopt its own administrative and enforcement provisions, establish a building department and designate a building official. What is not its choice is the statewide core: the energy conservation requirements, which apply to all commercial construction and to new one- and two-family residences whether or not a local code exists; the state fire code, enforced by the State Fire Marshal with local fire departments acting under agreement; and the state plumbing and electrical codes. Beyond those, the annexation pressure from a dozen cities and the unincorporated land between them.
Who handles permitting in Polk County?
Planning and Zoning is the permitting authority for unincorporated Polk County, enforcing the code the county has adopted alongside its zoning and subdivision regulation. The cities permit inside their own limits, the Building Code Bureau maintains the state code, the trades are licensed at state level, and the State Fire Marshal retains its own jurisdiction.
| Detail | Information |
|---|---|
| Department | Polk County Planning and Zoning |
| Office | 5885 North East Fourteenth Street, Des Moines, IA 50313 |
| Phone | (515) 286-3705 |
| Hours | Monday to Friday, 7:00 am to 4:30 pm |
| Scope | Unincorporated Polk County; a dozen cities permit their own |
| Energy statement | Required with the permit application |
Permit types
Residential permits
A house in unincorporated Polk County is permitted by the county against the code it has adopted, with zoning cleared first and the energy compliance statement filed with the application. On unserved parcels a well and an on-site wastewater system are approved alongside, and acreage development at the metropolitan fringe is the county's steady residential work.
How Iowa contractor credentials work
Iowa registers contractors with the Division of Labor and licenses the trades separately at state level. Electricians are licensed through the state electrical examining board and plumbers, mechanical and HVAC contractors through the plumbing and mechanical systems board, each valid across the state. A contractor doing business in Iowa registers with the Division of Labor, and out-of-state contractors face additional bonding requirements. Polk County may require its own local licence or registration on top of the state credential, and that is the requirement to confirm before a permit is pulled.
Commercial permits
Commercial and industrial work in unincorporated Polk County — the interstate corridors, agricultural and contractor businesses and the development following the metropolitan edge outward — clears county zoning and subdivision, then plan review against the county's adopted code, with the statewide energy requirements applying to all commercial construction.
Establishing what applies to the site
The first step on an Iowa project is establishing whether the jurisdiction has adopted a building code and, if so, which. A city or county that has adopted the state code enforces it locally; one that has adopted a different code enforces that; one that has adopted nothing has no general building permit requirement at all, though the statewide energy, fire, plumbing and electrical provisions still apply and the State Fire Marshal retains its own jurisdiction. That question is answered by the jurisdiction rather than assumed from its size. In unincorporated Polk County the Des Moines and Skunk river corridors bring floodplain review into the file, on-site wastewater governs most rural building, and annexation steadily moves land from county to city jurisdiction.
Polk County permit costs and fees
Fees follow the county's schedule for unincorporated territory, with trade licensing handled at state level.
| Item | Fee or rule |
|---|---|
| Building permit | The county's fee schedule, for unincorporated territory |
| Zoning and subdivision | County approval ahead of the permit |
| Well and on-site wastewater | Separate approvals where the parcel is unserved |
| Trade permits | Electrical, plumbing and mechanical, each separately |
| Energy statement | Required with the application; no separate fee |
| City permits | The county's dozen cities issue their own |
Annexation moves the boundary under you. The Des Moines metropolitan area has expanded steadily, and land that is county jurisdiction at purchase can be city jurisdiction by the time a permit is filed. The two authorities may enforce different codes and charge different fees, so the boundary is confirmed at filing rather than taken from an older map.
Trade permits and who may pull them
Trade work is permitted separately, under state codes that apply across Iowa rather than under whatever the local jurisdiction has adopted for general building.
Permit required
- Unserved parcels — well and on-site wastewater approvals alongside the building permit
- Electrical — separate permit, under the state electrical code and state licensing
- Plumbing — separate permit, under the state plumbing code and state licensing
- Mechanical — separate permit, under the state mechanical code and state licensing
- Fire protection — under the state fire code and the State Fire Marshal's jurisdiction
Typically exempt
- Like-for-like replacement the applicable trade code places below the permit threshold
- Work a property owner performs on their own residence, where the jurisdiction allows it
How to apply for a Polk County building permit
The state code, another code, or none at all; chapter 103A leaves the choice local.
Energy conservation, the state fire code and the state plumbing and electrical codes run statewide.
Zoning and subdivision are local in every case and precede the building permit.
Division of Labor registration, state trade licences, and any local requirement on top.
Required on every building permit application except one- and two-unit residential remodelling.
Footing to final, with the trades on their own permits, then the certificate of occupancy.
Review, corrections and what actually causes delay
Polk County reviews unincorporated work against its adopted code. What delays a file here is a parcel filed with the wrong authority after annexation, a missing energy compliance statement, and a services position established late.
Inspections in Polk County
Inspections follow the sequence of the code the jurisdiction has adopted — footing, foundation, framing, rough trades, insulation and final — requested from the local building department by permit number, with the trades inspected on their own permits. Work that passes final receives a certificate of occupancy for new buildings and changes of occupancy. Polk County inspects the work it permits in the sequence its adopted code sets, with the trades inspected on their own permits; inside the cities, inspection is theirs.
Polk County permit search and official resources
- Polk County Planning and Zoning — the department, its zoning and its permitting
- Iowa State Fire Marshal Division — the Building Code Bureau and the state fire code
- Iowa Code chapter 103A — the statute leaving general code adoption to local discretion
- Iowa State Fire Marshal Division — the Building Code Bureau, the state building code and the state fire code
- 661 IAC chapter 301 — state building code general provisions — the codes adopted by reference and the state's amendments
- Iowa Code chapter 103A — the statute leaving general code adoption to local discretion
Frequently asked questions
Does the county permit inside Des Moines?
No. Des Moines and the county's other cities permit inside their own limits; the county covers unincorporated territory.
Could my parcel be annexed before I build?
It is a real possibility at the metropolitan edge, so confirm the jurisdiction at the time of filing rather than at purchase.
What is the energy compliance statement?
A statement that the construction will comply with all applicable energy conservation requirements, required on every Iowa permit application except a one- or two-unit residential remodel.
Which code does the county enforce?
The code Polk County has adopted. Under Iowa Code chapter 103A each jurisdiction chooses its own; confirm the current adoption.
Do I need a well and wastewater approval?
On unserved parcels, yes — both are separate approvals alongside the building permit.
Who licenses electricians and plumbers?
State boards license the trades across Iowa.
Simplify Polk County permitting with Alliance Permitting
Polk County's territory is defined by where the cities are not, and that line moves. We confirm the jurisdiction at filing and file the energy statement with every application.
Ready to break ground in Polk County sooner?
Send us the scope and the parcel. We confirm the review path with the Polk County Planning and Zoning Department, assemble the submittal, file it, and track it through issuance — corrections included.
More Iowa permitting guides
More Iowa permitting guides
This guide is provided by Alliance Permitting for general information about Polk County permitting. Requirements, fees, and procedures change; confirm details with the permitting authority before relying on them.