Pennsylvania Contractors Must Include Their HICPA Registration Number on Contracts, Estimates, and Advertising
If you do home improvement work in Pennsylvania, your registration number goes on everything. Contracts, estimates, proposals, advertisements, business cards, and any vehicle that advertises your services. Every one of them. That’s the law under the Home Improvement Consumer Protection Act (HICPA).
The registration requirement is one thing. The display requirement is another. Plenty of contractors are registered and still out of compliance because the PA number never made it onto their estimate template, their ads, or their truck.
The Contract Enforceability Problem
Before the checklist: the reason this matters.
A home improvement contract that doesn’t comply with HICPA can be rendered voidable and unenforceable. A contractor who skips the required terms, the registration number, or the required consumer notice may not be able to collect payment through the courts, no matter how much work was completed.
The missing PA number on a contract isn’t a technicality. It’s the reason a judge may not enforce it.
What HICPA Requires
The Pennsylvania Office of Attorney General administers HICPA and is direct about it: your PA registration number must appear on all advertisements, contracts, estimates, and proposals used by the business in Pennsylvania. The law doesn’t dictate where on a document it must appear, but it must be clearly visible.
What Does a Pennsylvania HICPA Registration Number Look Like?
Every registered contractor receives a unique number beginning with “PA” followed by a series of digits, for example PA123456. That’s the format your number will take and the format it must appear in on every document and advertisement.
Here’s what it looks like in practice on an estimate header:
ABC Roofing LLC PA123456
Estimate #1023 Date: June 10, 2026
Simple. One line. No special formatting required. It just needs to be there and readable.
Where Your PA Number Must Appear
| Document or Location | Required |
|---|---|
| Home improvement contracts | Yes |
| Estimates | Yes |
| Proposals | Yes |
| Advertisements (print, digital, radio, TV) | Yes |
| Business cards | Yes |
| Letterhead | Yes |
| Vehicles carrying advertising | Yes |
The statutory definition of “advertisement” under 73 P.S. § 517.2 covers newspapers, periodicals, pamphlets, circulars, billboards, signs, letterhead, business cards, and online advertising. Sponsorships of civic or charitable events and writing on promotional items like pens or notepads are excluded.
Who Has to Register
Any contractor doing $5,000 or more in home improvement work in Pennsylvania during a calendar year. Sole proprietors, corporations, partnerships, subcontractors, independent contractors, and out-of-state contractors working on Pennsylvania properties all qualify.
Two exemptions: contractors doing less than $5,000 in work per year, and home improvement retailers with a net worth above $50 million.
What Counts as Home Improvement
Any work over $500 on an existing private residence. Remodeling, repair, renovation, installation, painting, roofing, siding, flooring, fencing, pools, driveways, landscaping installation, solar, security systems.
New home construction is excluded. Commercial work is excluded. Work on a property owned by someone with three or more private residences in Pennsylvania is also excluded, except for their primary residence or properties used for personal recreational purposes.
Contracts Must Include More Than Just the Number
Every home improvement contract over $500 must be written, legible, and signed by both parties before work begins. Required terms under HICPA include the total contract price, estimated start and completion dates, and a description of the work.
The contract must also carry this specific language:
“The official registration number of [contractor name] can be obtained from the Pennsylvania Office of Attorney General’s Bureau of Consumer Protection by calling toll-free within Pennsylvania 1-888-520-6680. Registration does not imply endorsement.”
That notice is mandatory. It belongs in every contract.
What Gets Contractors in Trouble
The registration number slips through the same way every time. A contractor registers, gets their PA number, then keeps using the same estimate template and running the same ads they had before registration. None of it has the number.
Commercial vehicles are one of the most common compliance gaps. If your truck or van carries your business name, phone number, or any advertising for home improvement services, the PA number has to be on it.
One question contractors frequently ask: do invoices and receipts need the PA number? The law specifically enumerates advertisements, contracts, estimates, and proposals. Invoices and receipts are not explicitly listed. As a practical matter, most contractors include the number on all customer-facing documents. If you have questions about your specific situation, contact the Pennsylvania Office of Attorney General or consult a licensed attorney.
The other frequent miss: the required OAG consumer notice in contracts. Many contractors include the registration number but omit the specific hotline statement. Both are required.
Staying Compliant
Build the number into every template once and the document side takes care of itself. Contract, estimate, proposal: it should be part of your standard company information, not something added manually job by job.
That’s where Cinderblock is useful for Pennsylvania contractors. Set up your company information, including your PA registration number and the required consumer notice language, and every document that goes out carries both automatically.
For ads, letterhead, vehicle graphics, and business cards: do a one-time audit. Update everything. HICPA registration is annual, so build a check into your renewal process to confirm your materials are still current each year.
Register or Renew
Registration and renewal are handled through the Pennsylvania Office of Attorney General. You’ll need proof of liability insurance with minimum coverage of $50,000 for bodily harm and $50,000 for property damage. Verify the current registration fee directly with the OAG before submitting, as fees are subject to change.
Unregistered contractors are prohibited from performing home improvements in Pennsylvania. An unregistered contractor also cannot legally enforce a residential contract for payment, regardless of how much work was done.
Get the number. Put it on everything.
This article is for general informational purposes only and does not constitute legal advice. Licensing and registration requirements can change. Verify current requirements directly with the Pennsylvania Office of Attorney General or consult a licensed attorney.
Andrew Booth
Andrew is a construction industry writer focused on contractor operations, scheduling, estimating, and field workflows.
