Do you need a permit to replace a roof in Allentown, PA?

Roofing questions: Allentown, PA

Do you need a permit to replace a roof in Allentown, PA?

Yes, a permit is required to replace a roof in Allentown, PA. Allentown's Bureau of Building Standards and Safety lists roof replacement as permit work and roofing repairs as work that needs no permit. Its handout When Residential Permits ARE Required (https://www.allentownpa.gov/Portals/0/adam/Content/meAX5N0o_0aDDQPfPSs28A/Url/2015PermitRequired2.pdf, linked from the Bureau's Construction Permitting page, read October 5, 2026) says "By State Law, you will need a permit(s), inspection(s) and certification of occupancy for:" and lists "Installing a new roof or roof replacement," and its handout When Residential Permits are NOT Required (https://www.allentownpa.gov/Portals/0/adam/Content/7vXaZeb2YUilD0NeL_cG5A/Url/2015NoPermitNeeded2.pdf, read the same day) lists "Roofing repairs." The Construction Permitting page lists "Building Permits (for new construction, changes, demolitions, electrical, heating, plumbing, roofing, signs)." Neither handout, that page, Chapter 225 of the City Code nor the building fee section, 270-31, states a square-footage or percentage line between a roofing repair and a roof replacement. Section 270-31 charges a residential permit "the greater of $50 or 1% of the total cost of work including materials and labor of all trades," plus a $50 application fee. Under state law: State law sets no square-footage or percentage threshold for roof work; any threshold is set locally. The Uniform Construction Code "does not apply to" "Alterations to residential buildings which do not make structural changes or changes to means of egress, except as required by ordinances in effect under sections 303(b)(1) or 503 of the act" or to "Repairs to residential buildings, except as required by ordinances in effect under sections 303(b)(1) and 503 of the act" (34 Pa. Code 403.1(b)(8) and (9)), and "A permit is not required for the exceptions listed in § 403.1(b) (relating to scope) and the following, if the work does not violate a law or ordinance" (34 Pa. Code 403.62(c)). For houses the regulation adds: "An ordinary repair does not require a permit." Its list of work that is not an ordinary repair names cutting away a load-bearing wall, "The removal or cutting of any structural beam or load-bearing support," changes to a required means of egress, and new or relocated piping, wiring or mechanical work (34 Pa. Code 403.62(d)); roofing is not named. A municipality may require more: under Act 45 section 503(c) it "may enact ordinances pursuant to this section which adopt additional code requirements for alterations or repairs to residential buildings," after a public hearing and after filing the proposed ordinance with the Department of Labor and Industry. These rules concern a "Residential building," which the regulation defines as "Detached one-family and two-family dwellings and townhouses which are not more than three stories above grade plane in height with a separate means of egress and their accessory structures" (34 Pa. Code 401.1). Everything after "Under state law:" up to here is Pennsylvania state law, the same in every municipality. Locally, the City of Allentown administers the Uniform Construction Code itself: City Code section 225-1 says the City "hereby adopts the Uniform Construction Code, contained in 34 Pa. Code Chapters 401 to 405, as may be amended from time to time, as the Building Code of the City of Allentown, and hereby elects to administer and enforce the provisions of the same," and section 225-3 designates "the Bureau of Building Standards and Safety and the Fire Department to administer this chapter." Act 45 section 104(b)(5) and (6) say the Act does not apply to "Alterations to residential buildings which do not make structural changes or changes to means of egress" or to "Repairs to residential buildings," in each case "except as might be required by ordinances in effect pursuant to section 303(b)(1) or adopted pursuant to section 503," and section 503(c) says "An ordinance under this subsection shall not be effective nor enforceable unless subsections (d), (e), (f), (g), (h) and (i) have been satisfied." This record does not decide whether the municipality's requirement is one adopted under section 503 or kept in effect by section 303(b)(1). The City Code read for this record is Chapter 225 (sections 225-1 to 225-4) and sections 270-31 and 270-37 of Chapter 270; the pre-1999 amendments attached to Chapter 225 under section 225-2 were not read.

Can you roof over an existing roof in Allentown, PA?

Two layers at most where the state code reaches the job. Pennsylvania adopts the 2021 International Residential Code without changing its reroofing section, R908 (34 Pa. Code 403.21(a)(7); the State's list of changes names no Chapter 9 section). Section R908.3.1.1 says "A roof recover shall not be permitted where any of the following conditions occur," and the third condition is "Where the existing roof has two or more applications of any type of roof covering." So one existing layer may be covered once, and a roof that already has two layers is torn off to the deck. The same section also bars a recover "Where the existing roof or roof covering is water soaked or has deteriorated to the point that the existing roof or roof covering is not adequate as a base for additional roofing" and "Where the existing roof covering is slate, clay, cement or asbestos-cement tile." The existing-building code the State also adopts, the 2021 International Existing Building Code (34 Pa. Code 403.21(f)), carries the same three conditions in Section 705.2.1.1. These rules bind work the Uniform Construction Code reaches. The Act does not apply to "Repairs to residential buildings" or to alterations that make no structural change, "except as might be required by ordinances" (Act 45 section 104(b)(5) and (6)), so whether R908 binds a particular house reroof turns on that exclusion and on the municipality's own ordinances. Everything above is Pennsylvania state law, the same in every municipality. Locally, the City of Allentown administers the Uniform Construction Code itself: City Code section 225-1 says the City "hereby adopts the Uniform Construction Code, contained in 34 Pa. Code Chapters 401 to 405, as may be amended from time to time, as the Building Code of the City of Allentown, and hereby elects to administer and enforce the provisions of the same," and section 225-3 designates "the Bureau of Building Standards and Safety and the Fire Department to administer this chapter." The Bureau's handout When Residential Permits ARE Required lists "Installing a new roof or roof replacement," and its companion handout When Residential Permits are NOT Required lists "Roofing repairs." The City Code read for this record is Chapter 225, Construction Codes, Uniform (sections 225-1 to 225-4, read in full), and the building fee and penalty sections of Chapter 270, Article V (sections 270-31 and 270-37); Chapter 225's text names no roof work, and section 270-31 charges building permits by the cost of the work with no roofing line. Section 225-2 says "The following local amendments which were adopted prior to July 1, 1999, shall continue in effect" for the building, plumbing, electrical and fire codes; those amendments are published as four attachments to Chapter 225, and the attachments were not read for this record. The Bureau's pages and handouts read for this record state no rule on roof layers.

Do roofing contractors need a license or registration in Allentown, PA?

Yes.

What building code does Allentown, PA use?

The 2021 International Residential Code, as adopted by the State in the Pennsylvania Uniform Construction Code (UCC). 34 Pa. Code 403.21(a)(7) adopts "The 'International Residential Code of 2021,' except that:" followed by the State's list of exclusions and modifications, effective January 1, 2026 (55 Pa.B. 7701). None of the State's changes touches Chapter 9, Roof Assemblies, or Section R803, Roof Sheathing, so those apply as the International Code Council publishes them. Work on existing buildings is also pointed to the State's existing-building code: "The repair, alteration, change of occupancy, addition and relocation of existing buildings must comply with Chapter 34 of the 'International Building Code of 2021' or with the 'International Existing Building Code of 2021'" (34 Pa. Code 403.21(f)). The UCC is the minimum everywhere in the state: "no municipality may propose or enact any ordinance which is less than the minimum requirement of the Uniform Construction Code" (Pennsylvania Construction Code Act, Act 45 of 1999, section 503(b)). The Act also lists work it "shall not apply to", including "Alterations to residential buildings which do not make structural changes or changes to means of egress" or to "Repairs to residential buildings," in each case "except as might be required by ordinances" kept in force under section 303(b)(1) or adopted under section 503 (Act 45 section 104(b)(5) and (6); 34 Pa. Code 403.1(b)(8) and (9)). The Act defines a repair as "The reconstruction or renewal of any part of an existing building for the purpose of its maintenance." So whether the code's roofing rules reach a given house reroof depends on the municipality's own ordinances. Everything above is Pennsylvania state law, the same in every municipality. Locally, the City of Allentown administers the Uniform Construction Code itself: City Code section 225-1 says the City "hereby adopts the Uniform Construction Code, contained in 34 Pa. Code Chapters 401 to 405, as may be amended from time to time, as the Building Code of the City of Allentown, and hereby elects to administer and enforce the provisions of the same," and section 225-3 designates "the Bureau of Building Standards and Safety and the Fire Department to administer this chapter." The Bureau's page says "the City of Allentown will begin enforcing the following 2021 Building Codes starting January 1, 2026," listing the 2021 International Residential Code and the 2021 International Existing Building Code, and that under Section 304 of the Act permits may be issued under the previous code where a contract was signed before January 1, 2026 and the application is made within six months of the new code's effective date. The Bureau's handout When Residential Permits ARE Required lists "Installing a new roof or roof replacement," and its companion handout When Residential Permits are NOT Required lists "Roofing repairs." The City Code read for this record is Chapter 225, Construction Codes, Uniform (sections 225-1 to 225-4, read in full), and the building fee and penalty sections of Chapter 270, Article V (sections 270-31 and 270-37); Chapter 225's text names no roof work, and section 270-31 charges building permits by the cost of the work with no roofing line. Section 225-2 says "The following local amendments which were adopted prior to July 1, 1999, shall continue in effect" for the building, plumbing, electrical and fire codes; those amendments are published as four attachments to Chapter 225, and the attachments were not read for this record.