Siding in Allentown

What's different about siding in Allentown

Allentown's siding story is shaped by its building typology. As a dense, older industrial-era city, much of its housing stock is attached — rowhouses and twins where a 're-side' often means only the front facade and rear wall, because the party walls are shared. That changes the project: a rowhouse re-side is a facade job with careful coordination at the shared edges, not the four-wall tear-off a detached suburban home gets. It also means the visible material is more of a streetscape decision than it is in a subdivision, which is why Allentown has layers of older aluminum and asbestos-cement cladding from mid-century re-clad campaigns sitting alongside original wood and newer vinyl.

The climate works against organic and aging cladding. Lehigh Valley summers are humid, winters bring repeated hard freezes, and the freeze-thaw cycling is hard on caulk joints, brittle older vinyl, and any wall where moisture has gotten in. Wood and the old asbestos-cement siding common on mid-century Allentown homes both reward careful handling — asbestos cement in particular requires proper testing and abatement procedures during removal, which a homeowner should expect to see addressed in any bid on an older home.

Allentown runs its own building department and a contractor registration system, separate from surrounding Lehigh County municipalities. Pennsylvania also requires home-improvement contractors to register with the state Attorney General's office, so an Allentown re-side involves both a state registration and local permitting. The city has designated historic districts as well, where exterior changes get an additional review. Confirming the jurisdiction, the contractor's state registration, and any historic-district status before work starts is the most valuable habit for an Allentown homeowner.

Allentown permits: building standards and safety

Most residential re-siding jobs in Allentown need a building permit, and the permit confirms the new wall assembly and weather barrier meet the code the city currently enforces.

Inside the City of Allentown, a residential re-side is handled through the Bureau of Building Standards and Safety. A like-for-like siding replacement is a relatively straightforward permit — the contractor submits the scope rather than full architectural plans — while work that changes wall framing or sheathing typically requires more detail. Pennsylvania enforces the Uniform Construction Code, based on the International Residential Code, statewide; Allentown administers it locally, and 2026 bids should reference the current adopted edition. The permit must be available for inspection, and an inspection record matters at resale and on insurance claims.

Pennsylvania requires home-improvement contractors to register with the state Office of Attorney General and to display that registration number on contracts and advertising — this is a statewide requirement separate from any local registration Allentown maintains. For a re-side on an older Allentown home, also expect the bid to address removal of any existing asbestos-cement siding through proper testing and abatement. If your address is in a surrounding Lehigh County municipality rather than the City of Allentown, the permit goes through that municipality instead. Confirm the jurisdiction, the contractor's PA HIC registration number, and the permit number on the contract before any siding is removed.

• Pennsylvania Home Improvement Contractor registration
  Pennsylvania requires home-improvement contractors performing work above a set dollar threshold to register with the state Office of Attorney General. The HIC registration number must appear on the contract. Verify it before signing any siding agreement.
• Asbestos-cement siding handling
  Many older Allentown homes carry asbestos-cement siding panels. Removal requires proper testing and, where asbestos is confirmed, abatement procedures under applicable regulations. Expect a bid on an older home to address this rather than ignore it.
• Historic district review
  Allentown has designated historic districts where exterior changes affecting visible siding material, profile, or detail can require review by the city's historic architectural review board before a permit issues. Confirm whether your block is in a district.

Typical siding replacement cost in Allentown

Allentown siding pricing depends heavily on building type. A rowhouse or twin facade re-side covers far less wall area than a detached-home tear-off, so the price band is wide. Vinyl is the most common replacement material across the metro, while fiber cement and engineered wood see demand on detached homes and design-conscious re-sides. Treat the figures below as directional ranges, not quotes.

Ranges synthesized from 2025–2026 Lehigh Valley siding market surveys and Allentown-area contractor pricing. Real quotes vary widely with building type, wall area, abatement needs, access, substrate condition, and material grade.

Neighborhoods where siding looks different

A facade re-side on a downtown rowhouse is a different project than a four-wall tear-off in the West End. A few Allentown-specific notes worth knowing before you bid:

• Center City rowhouse blocks
  Dense attached rowhouses where a re-side typically covers only the front and rear walls. The visible facade is a streetscape decision, and coordination at the shared party-wall edges is the key technical challenge.
• Old Allentown and historic-district areas
  Older neighborhoods with designated historic-district protections, where exterior changes affecting visible siding can require historic architectural review board approval. In-kind replacements are usually simpler than material changes.
• The West End and detached-home neighborhoods
  Detached and twin homes, many mid-century, where re-sides are fuller tear-offs. Older homes here often carry aluminum or asbestos-cement cladding that requires careful handling and, where asbestos is present, abatement.
• Newer East Side and outer subdivisions
  More recent construction leaning on vinyl and engineered wood. Re-sides here are usually straightforward like-for-like replacements outside any historic-review requirement.

Allentown weather events siding contractors still reference

Allentown does not face hurricanes or heavy hail the way coastal or Midwestern metros do, but the Lehigh Valley still sees wind, tropical remnants, and freeze events that shape the local claims picture. Statewide context lives on the Pennsylvania page.

• 2021
  Hurricane Ida remnants

  Ida's remnants brought destructive rainfall, flash flooding, and damaging wind to eastern Pennsylvania in September 2021. Wind and tree-fall produced exterior-damage claims across the Lehigh Valley, a reminder that inland metros still take damage from systems that made landfall far to the south.
• 2012
  Superstorm Sandy

  Sandy's late-October 2012 passage brought sustained high wind across eastern Pennsylvania, downing trees and causing widespread power outages. It is the recent benchmark wind event for the Lehigh Valley and drove a wave of exterior-damage claims, siding included.
• 2011
  Hurricane Irene and 2011 flooding

  Irene in August 2011, followed by Tropical Storm Lee weeks later, brought heavy rain and wind to eastern Pennsylvania. The pairing produced significant flooding and wind damage across the region in a single late-summer stretch.

Allentown siding FAQ

• My home is a rowhouse — what does a re-side actually cover?
  On an attached rowhouse or twin, the party walls are shared with neighbors, so a re-side typically covers only the exposed walls — usually the front facade and the rear. That means less wall area and a lower cost than a detached-home tear-off, but it also makes careful coordination at the shared edges essential.
• Do I need a permit to replace my siding in Allentown?
  In almost every case, yes. A residential re-side is handled through the City of Allentown Bureau of Building Standards and Safety, which administers Pennsylvania's Uniform Construction Code locally. A like-for-like replacement does not need full architectural plans, but the permit must be available for inspection.
• Does my contractor need to be registered in Pennsylvania?
  Yes. Pennsylvania requires home-improvement contractors performing work above a set dollar threshold to register with the state Office of Attorney General, and the HIC registration number must appear on the contract. Verify that number before signing any siding agreement.
• My older home has asbestos-cement siding. What does that mean for a re-side?
  Asbestos-cement siding panels are common on older Allentown homes. Removing them requires proper testing and, where asbestos is confirmed, abatement procedures under applicable regulations. Expect a reputable contractor to address this in the bid rather than ignore it — and be cautious of any bid that does not.
• I live in a historic district. Are there extra rules for re-siding?
  Possibly. Allentown has designated historic districts where exterior changes affecting visible siding material, profile, or detail can require review by the city's historic architectural review board before a permit issues. A true in-kind replacement is usually simpler than a material change. Confirm whether your block is in a district.
• What siding holds up best in the Lehigh Valley climate?
  The combination of humid summers and freeze-thaw winters rewards moisture-resistant, durable materials. Fiber cement and engineered wood resist rot and handle freeze-thaw well; quality vinyl and insulated vinyl are budget-friendly and perform fine. Older asbestos-cement and aluminum cladding are the materials most likely to be at end of life.
• Is my address in the City of Allentown or a surrounding municipality?
  It matters for permitting. Only addresses inside the City of Allentown permit through the city's building bureau; surrounding Lehigh County municipalities administer their own permits under the same statewide code. Confirm the jurisdiction on your contract before any work begins.