Zoning, building permits and septic rules in Dormont, Pennsylvania

At a glance

Zoning

Yes. Every parcel in the borough sits in a zoning district (R-A, R-S, R-C, C, TO or PA)¹⁴

Building permit

Required under the state Uniform Construction Code; the borough's own permit office and fees were not confirmed²

Who zones

The borough, through its Zoning Officer⁵

Septic

Allegheny County Health Department, Sewage Enforcement Officers³

Subdivision

Regulated by the borough's subdivision and land development chapter⁶

Owner-builder

Pennsylvania has no statewide contractor licence for most construction work⁷

Who to call

Contact details are copied from each office’s official page and were checked against it on October 14, 2026.

Does Dormont, PA have zoning, and what does it mean for lots and setbacks?

Yes. The Borough of Dormont zones all land inside the borough, and the current rules sit in Chapter 210, the Development Code adopted in 2021¹. Every parcel is classified as one of six districts: alley-loaded residential (R-A), street-loaded residential (R-S), collector-street residential (R-C), commercial (C), transit-oriented (TO) or public amenity (PA)⁴.

Dimensional rules differ by district. In the alley-loaded residential district, aggregate lot coverage is capped at 60% for lots 30 feet wide or more and 90% for narrower lots⁸. Principal buildings in that district may rise to 3 stories, and accessory buildings are limited to 2 stories⁹. Check the district map before you design anything: the Zoning Map is kept at the borough offices and on the borough website⁴.

Allegheny County does not zone land inside Dormont; zoning is set municipality by municipality¹⁰.

Do you need a building permit in Dormont, and who issues it?

Pennsylvania's Uniform Construction Code applies to Dormont, and an owner must apply to the building code official and obtain a permit before constructing, enlarging, altering, repairing, moving or demolishing a residential building². Minor work such as fences no more than 6 feet high is exempt under the same rule².

We could not confirm which office issues building permits inside Dormont, what it charges, or how it inspects. Call the Borough of Dormont's administrative office and ask who the building code official is, and whether a third-party agency handles inspections. The state's rule is that municipalities administer the UCC locally, either with their own staff or through certified agencies¹¹.

How do septic permits work in Dormont?

On-lot sewage systems in Allegheny County are permitted by the county Health Department's Sewage Enforcement Officers under Pennsylvania's Act 537³. A permit is required before any construction of a system¹².

We did not confirm how Dormont's own sewer chapter treats any individual parcel, so ask the borough whether your address is on public sewer. The county's Article XIV is explicit that continued use of an individual system is unlawful when part of the building is within 150 feet of an available public sewer¹³. For a septic question, call the¹⁴ office.

Can you live in an RV or tiny home in Dormont?

We could not confirm a borough rule on RV occupancy or tiny homes. The Development Code requires the Zoning Officer to decide whether a use that is not listed in the use table is similar to a listed one⁵, so an RV or tiny home used as a dwelling needs a written answer from that office before you buy a parcel for it.

Pennsylvania's state-park campground rules cap stays at 14 consecutive nights in summer¹⁵, but those rules cover state park campsites, not your own lot, so they do not answer this question.

Building a home in Dormont: the steps, in order

1. Confirm the zoning district and its coverage and height limits with the borough's Zoning Officer⁴.
2. Ask the borough office for the building code official and the permit application, then obtain the UCC permit before work starts².
3. If the work involves driveway access to a state highway, a PennDOT highway occupancy permit is required¹⁶.
4. If the lot lies in a floodplain, documentation sealed by a registered design professional must accompany the application¹⁷.
5. Plumbing permits go through the Allegheny County Health Department¹⁸.
6. Request a certificate of occupancy before moving in; a residential building may not be used without one¹⁹.

What stays with Allegheny County, and what to check before you buy?

Allegheny County's Health Department handles septic permits and plumbing permits³. Subdivision and land development in Dormont are governed by the borough's own chapter⁶; the county's subdivision ordinance applies only to municipalities without their own²⁰. For land outside Dormont, see the Allegheny County page.

Budget for taxes too: Allegheny County's effective property tax rate is 1.6%²¹, and the county's median property tax bill is $3,399 per year²².

Watch-outs

• We could not confirm the borough's permit fees, inspection process or the building code official; ask the Borough of Dormont before you sign a contract¹¹.
• Do not assume a 90% lot coverage cap applies to your lot: the 60% and 90% limits depend on lot width, and other districts have their own tables⁸.
• A permit-exempt septic system based on a 10-acre tract is a statewide exception that does not fit a typical borough lot²³.

Sources

1. Dormont Code Chapter 210 Development Code, Article II Zoning Districts (Borough of Dormont), quoted and re-checked
2. Part XIV, Uniform Construction Code, Chapter 403 Administration (Pennsylvania statewide rule), quoted and re-checked
3. Water Pollution Control, quoted and re-checked
4. Dormont Code Chapter 210 Development Code, Article II Zoning Districts (Borough of Dormont), quoted and re-checked
5. Borough of Dormont Zoning Officer (ecode360.com)
6. Borough of Dormont, PA Code of Ordinances (eCode360) table of contents (Borough of Dormont), quoted and re-checked
7. Contractor Licensing (Pennsylvania statewide rule), quoted and re-checked
8. Dormont Code Chapter 210 Development Code, Article II Zoning Districts (Borough of Dormont), quoted and re-checked
9. Dormont Code Chapter 210 Development Code, Article II Zoning Districts (Borough of Dormont), quoted and re-checked
10. Land Use Planning, quoted and re-checked
11. Uniform Construction Code (UCC) (Pennsylvania statewide rule), quoted and re-checked
12. Article XIV Sewage Management, quoted and re-checked
13. Article XIV Sewage Management, quoted and re-checked
14. Allegheny County Health Department, Plumbing Program (alleghenycounty.us)
15. RV and Tent Campsites (Pennsylvania statewide rule), quoted and re-checked
16. Uniform Construction Code Chapter 403, quoted and re-checked
17. Apply for a Uniform Construction Code Building Permit, quoted and re-checked
18. Project Plans and Permitting, quoted and re-checked
19. Part XIV, Uniform Construction Code, Chapter 403 Administration (Pennsylvania statewide rule), quoted and re-checked
20. Land Use Planning, quoted and re-checked
21. Effective property tax rate: Bolthole Index county data
22. Median property tax bill: Bolthole Index county data
23. 25 Pa. Code § 72.22. Permit issuance (Pennsylvania statewide rule), quoted and re-checked

Written October 14, 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.