Rob Hartley

Founder, AppealDesk · February 28, 2026

Pennsylvania Property Tax Appeal Deadline 2026: August 1 for Most Counties

Updated March 2026

Most Pennsylvania counties require property tax appeals by August 1, 2026, though Philadelphia and Allegheny County have different deadlines. Always verify with your county assessment office.

Pennsylvania County Deadlines 2026

August 1 Deadline Counties

The majority of PA counties follow August 1:

• Berks
• Bucks
• Chester
• Cumberland
• Dauphin
• Delaware
• Lancaster
• Lehigh
• Luzerne
• Montgomery
• Northampton
• Westmoreland
• York

Philadelphia County

• Deadline: First Monday in October (October 5, 2026)
• Real Estate Tax Review Board
• Formal process required

Allegheny County (Pittsburgh)

• Deadline: March 31, 2026
• Earlier than most PA counties
• Online filing available

Understanding Pennsylvania's Appeal Process

Level 1: County Assessment Office

• Informal review
• No strict deadline
• Can resolve simple errors
• Try this first

Level 2: Board of Revision/Appeals

• Formal deadline applies
• August 1 for most counties
• Hearing required
• Evidence essential

Level 3: Court of Common Pleas

• If unhappy with Board decision
• 30 days to appeal
• Attorney recommended
• Expensive option

Pennsylvania's Common Level Ratio (CLR)

PA uses CLR to ensure fairness:

• Set by State Tax Equalization Board
• Shows average assessment-to-sale ratio
• If your ratio exceeds CLR, strong appeal case
• Published annually by county

2026 CLR Examples:

• Chester County: 0.93
• Montgomery County: 0.89
• Bucks County: 0.87

What You Need by August 1

Minimum filing requirements:

• Appeal form (county-specific)
• Property identification
• Current assessment
• Reason for appeal
• Owner signature

Evidence can follow: Most counties allow evidence submission after initial filing.

County-Specific Requirements

Philadelphia

• More formal process
• Professional evidence expected
• High volume = delays
• October deadline advantage

Montgomery County

• Strong online system
• Quick informal reviews
• Reasonable hearing officers
• File early for summer hearings

Chester County

• Paper filing required
• Conservative Board
• Strong evidence needed
• Professional appraisals help

Bucks County

• Mixed commercial/residential
• Comparable sales crucial
• August 1 strictly enforced
• No extensions

Delaware County

• Reassessment ongoing
• Higher success rates
• New values = more errors
• File even if small difference

Pennsylvania Evidence Requirements

Strong PA Evidence:

• Sales within same municipality
• Within 1 mile of property
• Similar square footage (±15%)
• Same school district
• Last 18 months only

PA-Specific Factors:

• School district quality impacts
• Municipality services matter
• Age adjustments expected
• Condition documentation crucial

Special Pennsylvania Considerations

Clean and Green (Act 319)

• Preferential assessment
• Separate program
• Different deadlines
• Don't confuse with appeals

Homestead Exemption

• Reduces taxable assessment
• File separately
• Can appeal remaining value
• Check both programs

Senior Citizens Relief

• Various county programs
• Income requirements
• Property tax rebates
• Separate from appeals

Cost of Missing PA's Deadline

Example - Chester County:

• Home assessed: $500,000
• Market value: $425,000
• Over-assessment: $75,000
• Tax rate: 2.8%
• Annual loss: $2,100
• 5-year loss: $10,500

All because you filed August 2 instead of August 1.

Pennsylvania Reassessment Counties

Counties in reassessment are prime for appeals:

• Delaware (ongoing)
• Lackawanna (2025-2026)
• Washington (2026)
• Carbon (planned)

Why it matters: New assessments = more errors = higher success rates.

Quick Pennsylvania Action Plan

For August 1 Counties:

By June 15:

• Review assessment notice
• Compare to 2025
• Note any jumps

By July 15:

• Research comparables
• Take property photos
• Document issues

By July 25:

• Complete appeal form
• Organize evidence
• Plan filing method

By July 30:

• File appeal (don't wait!)
• Get confirmation
• Keep copies

For Philadelphia (October 5):

• More time but don't delay
• Professional evidence expected
• Consider attorney
• Complex process

For Allegheny (March 31):

• Deadline already passed for 2026
• Plan for 2027
• Monitor assessment changes

Electronic vs Paper Filing

Counties with e-filing:

• Allegheny
• Montgomery (limited)
• Chester (pilot program)

Benefits of e-filing:

• Immediate confirmation
• No mail delays
• Track status
• Save copies

If paper filing:

• Certified mail recommended
• Hand delivery safer
• Get stamped copy
• File duplicate

Don't Navigate PA's System Alone

Pennsylvania's county-by-county variations make appeals complex. Each Board has preferences.

AppealDesk handles Pennsylvania appeals with:

• County-specific forms
• CLR calculations
• PA-compliant comparables
• Professional packets
• Filing guides by county

Final Reminder: August 1 for Most

Pennsylvania may seem to give you more time than other states, but don't be fooled. August creeps up fast.

Your assessment is set. Your deadline is firm. No extensions for vacation, forgetfulness, or "I meant to file."

With PA's high property values, even small percentage reductions mean significant savings.

154 days until August 1. Start now, file early, save money.