Pennsylvania public construction bonding is governed by the Public Works Contractors’ Bond Law of 1967 (8 P.S. §191 et seq.), which generally requires performance and payment bonds on public works contracts exceeding $10,000.

Performance Bonds

Performance bonds guarantee that the contractor will complete the project according to the contract terms and specifications.

• Typically required on public works contracts exceeding $10,000
• Usually written for 100% of the contract amount
• Protect the project owner if the contractor fails to complete the work

Payment Bonds

Payment bonds protect subcontractors, laborers, and suppliers working on public projects.

• Generally required alongside performance bonds
• Usually written for 100% of the contract value
• Provide a legal claim path when subcontractors or suppliers are unpaid

Because subcontractors generally cannot file mechanics liens on public property, payment bonds serve as the primary protection for downstream project participants.

Bid Security

Many Pennsylvania public agencies require bid security during the bidding process to ensure that contractors will enter into the contract and provide the required bonds if awarded the project.

Contractors may submit bid security as:

• Bid bonds
• Certified checks
• Other acceptable bid guarantees specified in the solicitation documents

The required amount is typically defined in the bid package.

Who These Rules Apply To

Pennsylvania public works bonding requirements generally apply to contracts issued by:

• State agencies
• Counties
• Municipalities and boroughs
• School districts
• Public authorities

Typical Pennsylvania Public Works Bond Timeline

Bid Solicitation → Bid Security (if required) → Contract Award → Submit Performance & Payment Bonds → Notice to Proceed → Project Construction → Project Completion

Contractors must provide required bonds before the public agency issues a Notice to Proceed. Always review the bid package carefully, as agencies may specify their own bond forms and filing requirements.

Pennsylvania Public Works Bond Forms

Pennsylvania public agencies typically provide specific bond forms within the project bid package. Contractors must submit bonds on the required form issued by the contracting agency. Sureties issuing bonds for Pennsylvania public works must also be authorized to transact business in the state.

Pennsylvania’s bonding threshold is relatively low compared to many states. Because bonds are generally required on public works contracts exceeding $10,000, even smaller municipal projects may require bonding.

1. Public Works Projects

Performance and payment bonds are typically required for contracts exceeding $10,000 under Pennsylvania law. 

2. Municipal & Local Projects

Cities and local agencies often use their own bond forms and percentage requirements.

3. Private Commercial Projects

Private owners frequently require bonds on larger or higher-risk developments.

4. Licensing vs Project Bonds

License bonds (if required) are separate from project bonds.

• Small contracts below statutory thresholds
• Emergency or negotiated contracts
• Private projects where the owner waives bonding
• Certain alternative delivery models

Pennsylvania public works projects follow the Public Works Contractors’ Bond Law of 1967, while federal construction projects follow the Federal Miller Act. Both laws require bonding to protect project owners and ensure subcontractors and suppliers are paid, but the requirements differ in several important ways.

Contractors working on both state and federal projects should review each project’s bid package carefully, since bonding thresholds, claim procedures, and filing deadlines can vary between Pennsylvania law and federal Miller Act requirements.

Bond premiums generally follow national underwriting standards.

Typical ranges:

• ~1–3% for established contractors*
• Higher rates for new or higher-risk applicants

*Most Pennsylvania construction bond premiums range from about 1%–3% of the bond amount for well-qualified contractors, though rates may be higher for newer or higher-risk applicants.

Rates depend on:

• Credit history
• Experience on similar projects
• Financial strength
• Work-in-progress backlog

Many contractors seek bond prequalification before bidding to ensure bonding capacity is available if they win the contract.

Apply for Pre-Qualification Today

Surety underwriters evaluate:

• Personal and business credit
• Similar project experience
• Financial statements
• Work-in-progress schedules
• Backlog vs capacity

Strong documentation usually means faster approvals and lower rates. Learn more about underwriting.

• Waiting too long before bid deadlines
• Underestimating required financial documentation
• Confusing bonds with insurance
• Ignoring indemnity obligations
• Missing statutory claim timelines

Avoiding these pitfalls helps keep bids on track.

If a contractor fails to meet contract obligations on a bonded project, the project owner may file a claim against the performance bond. The surety will investigate the claim and may finance project completion, arrange for another contractor to complete the work, or pay damages up to the bond amount.

For payment bond claims under Pennsylvania’s Public Works Contractors’ Bond Law, the rules depend on the claimant’s relationship to the prime contractor.

In general:

• Subcontractors and suppliers with a direct contract with the prime contractor may bring a claim for unpaid amounts, typically within one year of their last furnishing of labor or materials.
• Subcontractors or suppliers without a direct contract with the prime contractor must usually provide written notice to the prime contractor within 90 days after their last furnishing of labor or materials.
• Lawsuits on the payment bond generally must be filed within one year after the claimant’s last furnishing of labor or materials.

Missing statutory notice or filing deadlines can prevent recovery, so contractors and suppliers should review the bond language carefully before filing a claim.