Pennsylvania Separations Act: Multi-Prime Bidding and Penalties

The Pennsylvania Separations Act requires public entities in the Commonwealth to split building construction into separate contracts for the major mechanical trades, rather than awarding one bundled contract to a single general contractor. First enacted in 1913, the law produces what the industry calls a multi-prime structure: plumbing, heating, ventilating, electrical, and, on county work, elevator contractors each hold their own direct contract with the government owner. When a project crosses the applicable dollar threshold, separate specifications and separate bids are mandatory, and a contract awarded in violation of the Act can be voided.

Which Public Entities Are Covered

The Separations Act is not one statute but a set of parallel provisions in different titles of Pennsylvania law, each aimed at a different level of government.

Title 71 applies to state government building projects and requires separate specifications and contracts once total project cost exceeds $4,000.¹ Title 53 imposes the same requirement at the same figure on cities, boroughs, townships, and incorporated towns.²

Counties operate under Title 16, which uses a base amount tied to Section 15101 (currently $18,500, subject to periodic adjustment).³⁴ School districts fall under the Public School Code at Title 24, which uses the same $18,500 base and applies to a broader range of work, including repairs and maintenance rather than only new construction.⁵ The Pennsylvania Department of General Services has a separate exemption for state contracts costing less than $25,000.⁶

The trigger is total project cost, not the cost of any single trade. A public entity cannot avoid the Act by breaking a $50,000 renovation into smaller packages that each individually fall below the threshold. If the aggregate scope crosses the line, separate bidding is required.¹

Trades That Must Be Bid Separately

The list of trades depends on entity type, and this is where people get tripped up.

State and municipal projects call out four branches of mechanical work: plumbing, heating, ventilating, and electrical. The architect or engineer must prepare a separate set of specifications for each branch, and the public entity must solicit separate bids for each.²¹

County projects require five separate bid packages: plumbing; heating, ventilating, and air conditioning; electrical work; elevators and escalators; and general construction, meaning a complete set of specifications for all remaining work not covered by the four trade packages.³ The general construction contract stands alongside the trade contracts rather than absorbing the residual work into one of them.

School district projects must also be bid under separate contracts. The Public School Code specifically names plumbing, heating and ventilating, and lighting systems, and it covers repairs and maintenance in addition to new construction and alterations. A major HVAC overhaul in an existing school can trigger separate bidding even when nothing new is being built.⁵

How Contracts Get Awarded

After bidding closes, the public entity must award each separate trade contract to the lowest responsible bidder for that branch of work.¹ Lowest price alone is not enough. Responsibility means financial capacity, relevant experience, workforce, and the legal standing to perform. A bidder with a record of defaults or missing the right licenses can be passed over for the next-lowest qualified bidder, but the decision has to rest on documented evidence rather than preference. Bid protests most often arise here, and courts look at whether the entity followed a fair, evidence-based process.

The result is a multi-prime structure. Each awarded contractor holds a direct contract with the government owner. On a school renovation, that can mean four or five prime contracts running at once, with no single contractor sitting atop the others. Each prime controls its own scope, workforce, and materials, and each answers directly to the owner.

Bonding on a Multi-Prime Project

Pennsylvania’s Public Works Contractors’ Bond Law of 1967 requires prime contractors on public projects to furnish a performance bond and a payment bond before work begins. Both bonds generally equal 100% of the contract amount. For most general contracting bodies, bonding kicks in on contracts over $5,000. For counties, school districts, municipalities, and authorities, the threshold is $10,000, and those entities may accept an irrevocable letter of credit or a restrictive escrow account from a chartered lending institution in place of a traditional surety bond.⁷

Because the Separations Act produces multiple prime contracts on one project, each prime must post its own bonds covering 100% of its individual contract value. The owner ends up holding a separate bond package for each trade.

Coordination Falls on the Owner

The Act’s biggest practical consequence is who runs the job. On a conventional project, a single general contractor manages the schedule, resolves conflicts between trades, and absorbs the risk when one subcontractor’s delay ripples into another’s work. Under a multi-prime structure, that coordination role shifts to the public owner. The Pennsylvania Supreme Court has described the Act as effectively compelling the owner to serve as its own general contractor.⁶

One prime cannot direct another to reschedule, accelerate, or clear the way, because there is no contractual relationship between them. Every dispute flows through the owner. If the plumber falls behind and blocks the electrician from starting, the electrician’s delay claim lands on the owner, not on the plumber.

Many public entities hire a construction manager for day-to-day scheduling, but that role has limits. A construction manager can organize bid packages, monitor the schedule, and flag problems. A construction manager cannot issue change orders, withhold payment, compel a contractor to perform, or terminate a prime contract. Those powers stay with the owner, and the gap between what the construction manager sees and what the construction manager can do is where multi-prime projects tend to go sideways.

The Guaranteed Energy Savings Act Exception

The Guaranteed Energy Savings Act (GESA) is one of the few recognized exceptions to the multi-prime requirement. Under GESA, a public entity can award a single contract for energy conservation work through a request-for-proposals process rather than traditional competitive bidding, provided the total cost of the improvements does not exceed the projected energy, water, or operational cost savings over a period of up to 20 years.⁸

The exception is narrow. In Wescott v. Delaware County Intermediate Unit, the Commonwealth Court held that GESA does not override the Separations Act for an entire project simply because the project includes some energy-saving components. The court indicated a public entity could bid the conventional construction portions separately under the Separations Act while limiting GESA to the specific energy-saving work, such as replacing a boiler with a centralized HVAC system.⁹ Wrapping an entire renovation into a GESA contract to sidestep separate bidding invites a challenge.

What Happens If a Public Entity Ignores the Act

A public entity that bundles trades together or fails to solicit separate bids when required risks having the entire contract voided. Pennsylvania courts have consistently treated the Separations Act as mandatory rather than advisory, so a contract awarded in violation of its terms can be challenged and invalidated by a competing contractor, a taxpayer, or another interested party. In Wescott, a contractor sued alleging the work should have been bid separately, and the court agreed the Act applied to the disputed portions of the project.⁹

The fallout goes beyond the courtroom. A voided contract forces a rebid, which delays the project and often raises costs when material prices have moved. Contractors who performed under an invalid contract face uncertainty about payment. Public officials who approved the improper procurement may face political and legal scrutiny. Getting the classification right before specifications go out is far cheaper than litigating it afterward.

1
Pennsylvania General Assembly. Pennsylvania Statutes Title 71 P.S. State Government 1618
2
Pennsylvania General Assembly. Pennsylvania Statutes Title 53 P.S. Municipal and Quasi-Municipal Corporations 1003
3
Pennsylvania General Assembly. Pennsylvania Code Title 16 Counties 16117 – Separate Bids for Plumbing, Heating, Ventilating, Air Conditioning, Electrical Work, Elevators and Escalators
4
Pennsylvania General Assembly. Pennsylvania Statutes Title 16 Pa.C.S.A. Counties 15101
5
Pennsylvania General Assembly. Pennsylvania Statutes Title 24 P.S. Education 7-751
6
FindLaw. Pennsylvania Associated Builders and Contractors Inc v. Commonwealth Department of General Services
7
Pennsylvania General Assembly. Public Works Contractors Bond Law of 1967
8
Pennsylvania General Assembly. Pennsylvania Consolidated Statutes Title 62 Chapter 37 – Guaranteed Energy Savings
9
Unified Judicial System of Pennsylvania. Wescott v. Delaware County Intermediate Unit