On-call plumbing contracts: how public buyers price, award and renew them

The buyer defines a scope, plumbing repairs, fixture and valve replacement, drain cleaning, video inspection, leak detection, water heater swaps, backflow maintenance, and any other plumbing service requested, and asks for hourly rates rather than a price for any particular job. Each work order is authorized by the buyer's project manager or facilities director, performed, ticketed, inspected and invoiced at the contract rates. The paper is an invitation for bids, not a request for proposals, and it is awarded on price after a pass-or-fail check of license, insurance and references.

Terms run one year with renewals or a longer base with options. McKeesport Housing Authority's plumbing support contract is three years with two one-year extensions, five years in total, across seven developments and more than 800 units. Hall County, Georgia, awarded one year with four optional renewals to a pool of four contractors. New York City's Health Department bid six years with no options. Massachusetts towns favor one year with two options. The longer the term, the more the option-year pricing matters, and the more a bad rate card costs. See Unit price contract and IDIQ contract for the structure.

The formula decides where to put your margin. Under an average-of-rates award, every rate line counts equally, so a high holiday rate hurts as much as a high weekday rate even though holidays are a fraction of the hours. Under an estimated-hours award, the weekday line carries most of the weight and the emergency and holiday lines barely move the total, so margin belongs on the lines with few estimated hours. Under a pool award, the rates only need to be reasonable; the work is then dispatched by availability and performance.

Build each rate from the wage rule that applies (below), plus payroll burden at the plumbing workers' compensation class, plus the truck, the dispatcher, the license holder's supervision and the travel you cannot bill, plus margin. Then read the materials clause. A shop that priced a 20 percent markup on every fixture and finds the authority supplies fixtures from its own stock has a labor-only contract with a materials margin that never shows up.

• Response time. McKeesport requires emergency response at any of seven locations within four hours of notification. Towns commonly require one hour for emergencies, 24 hours for routine work, around the clock including holidays. Districts want a phone response within an hour and a truck on site within four for urgent calls. Missing the window is grounds for termination, and it is the first thing the facilities director remembers at renewal.
• Portal-to-portal. Many contracts exclude travel from billable time or require the rate to include it, as Hall County does. On a county the size of Hall, that is an hour of unbilled driving per call at the far end.
• Overtime. Hall County permits no overtime charges. McKeesport prices overtime and holiday time as separate lines. If the form has no overtime line, the weekday rate is the rate at midnight.
• Approval before work. The authority must approve every recommended repair before it starts; a repair done on the plumber's judgment is not paid.
• Job caps. Districts cap single projects at 10,000 to 25,000 dollars and bid anything larger separately. The cap is also your ceiling for the contract's value per call.
• Documentation. A ticket per job signed by the buyer's representative, with hours by classification and materials itemized, and for backflow visits a written report and checklist per unit. No ticket, no invoice.

Before any rate is read, the bid is checked for responsiveness and the bidder for responsibility. On McKeesport's form that means a current Pennsylvania or local contractor's license; three references from firms or governmental units who may be called before award; evidence of workers' compensation, general liability and auto coverage in the package; a non-collusion affidavit; a Section 3 business concern representation; and certifications on subcontracts over 10,000 dollars. Within ten days of bid opening, the successful bidder must produce certificates naming the authority as additional insured on a primary and non-contributory basis, and the authority may cancel the award without notice if they do not arrive. Bonding was not required at all.

Districts add background checks for every worker who enters a school and, in states like Massachusetts, a wage schedule and a tax compliance attestation. Counties want proof of being licensed, insured and bonded in the state. None of this is scored; each item is pass or fail, and the failures are almost always clerical. Responsiveness vs. responsibility explains the distinction and how to build an RFP compliance matrix shows how to build the checklist.

On-call contracts sit at the boundary between maintenance and construction, and the wage rule follows the work order, not the contract title.

• Housing authority routine maintenance, the running toilet and the leaking valve, is paid at HUD-determined maintenance wage rates set for that authority under 24 CFR 965 and HUD Handbook 1344.1.
• Housing authority modernization over 2,000 dollars, replacing every water heater in a development under the Capital Fund, is Davis-Bacon with weekly certified payroll, even when it is ordered under the on-call contract.
• Massachusetts attaches the c.149 prevailing wage schedule to on-call plumbing bids from towns, districts and charter schools; Match Charter Public School's May 2026 plumbing IFB did exactly that.
• California Labor Code 1771 applies at 1,000 dollars and expressly to maintenance, with DIR registration required to bid.
• Illinois and New York apply their prevailing wage acts without a threshold.
• Texas and Georgia leave rates to the local body or have no state act; Hall County's form carried no schedule.

Build the rate card from the applicable schedule, and when a single contract carries two rules, keep two rate sheets and bill each work order under the right one. Prevailing wage and Davis-Bacon for contractors and how to win public housing authority contracts cover the payroll and the HUD side in detail.

A five-year authority contract is advertised once every five years, often with three weeks' notice on the authority's website and nowhere else. A district on-call contract starts July 1 and is bid in spring, unless the district simply renews. A county pool renews annually and adds vendors only at rebid. The contractor who wins is the one who knew the expiry date a year out, met the facilities director or maintenance supervisor, learned what the incumbent does badly, and had the license, insurance and references assembled before the notice ran. That information is public: board minutes, award notices and the previous IFB tell you who holds the contract, at what rates, and when the options run out.

Assembling that across every authority, district and county in your service area is the work we do. We find the on-call contracts you can win, read every page including the wage schedule and the insurance clause, and write the response; you price it and sign it. Book a call and in twenty minutes we will walk through which contracts in your territory are coming up and who holds them now.