Schools and public agencies buy maintenance differently from private owners. The contract usually goes through formal procurement and governing board approval, requires prevailing wage with certified payroll, concentrates major work in summer and break windows, and often runs as a multi-year term with renewal options. Documentation matters as much as the work, because board members, auditors and funding sources may all review it.
- Public buyers have rules private owners do not. Procurement method, board or council approval and public-works labor requirements shape the contract before the first visit happens.
- Prevailing wage with certified payroll typically applies to public-works work, and maintenance is generally covered in California. Confirm how your agency and the DIR treat your specific scope.
- Summer and break windows are the busiest time for school HVAC. Planning the calendar early protects both the work and the occupied school year.
- Multi-year terms give stability but need clear renewal, scope adjustment and termination language so the agreement stays workable as the site changes.
- Documentation has several readers: site staff, the board, auditors and sometimes funding or oversight agencies. The records should be written with all of them in mind.
How public buyers differ from private owners
A private property owner can pick a contractor, agree on a scope and start. A school district, city, special district or county has to follow a procurement process, and the person who needs the maintenance done is rarely the person who signs the agreement. The facilities director identifies the need, the business office or purchasing department runs the process, and the governing board or council approves the award.
That structure has real consequences for how a maintenance contract should be written. The scope has to be clear enough to be evaluated by people who are not mechanical specialists. The terms have to fit a calendar of public meetings. And the paperwork has to survive scrutiny long after the people who wrote it have moved on.
Davinci Mechanical is commercial only and has experience with public and bid-level work. For the broader procurement picture, the public agency and school HVAC procurement guide is the companion to this page, and the public works industry page describes the types of agencies involved.
Procurement and board approval
The method used to buy maintenance depends on the agency, the value of the agreement and the rules that apply to it. Some agencies use formal competitive bidding, some use requests for proposals that weigh qualifications as well as the offer, and some purchase through cooperative or existing agreements. Confirm current requirements with your agency's counsel or purchasing office, because the thresholds and methods are set by law and local policy.
What helps an evaluation committee
- A scope written by asset class, so reviewers can see what is and is not included.
- A clear statement of who performs the work. Davinci's mechanical, refrigeration and controls work is performed by its own UA Local 250 crew, and no subcontractors are used for that work.
- License, registration and insurance information presented in the format the solicitation asks for.
- A sample of the documentation the agency will receive, so the committee can judge what it is buying.
- Plain language on exclusions, so there are no surprises after award.
Board approval adds timing. If the agreement has to be on an agenda, the proposal needs to be complete in time for that agenda, and any later scope change may need approval again. That is a good reason to define in the contract how routine adjustments are handled, for example adding a newly installed unit to the asset list, so every small change does not go back to the board. See bid work and bid projects for how Davinci approaches formal solicitations.
Prevailing wage and certified payroll
In California, work on public works projects generally carries prevailing wage requirements, and the definition of public works is broad enough to include certain maintenance. Contractors performing covered work typically need to be registered with the Department of Industrial Relations and submit certified payroll records. The details depend on the agency and the work, so confirm current requirements for your scope.
Davinci is prevailing-wage ready and keeps certified payroll. Its mechanical work is performed by its own UA Local 250 crew. The California prevailing wage guide for HVAC contractors explains how the requirements apply in practice.
What the agency should expect to see
- Contractor registration information, as required for the solicitation.
- Certified payroll records submitted on the schedule the agency specifies.
- Records that separate prevailing-wage hours from any work that falls outside the covered scope.
- A named person at the contractor who handles compliance questions.
Contractor shall perform the maintenance services described in this agreement in accordance with the prevailing wage requirements applicable to the work, and shall maintain and submit certified payroll records as required by Owner and by applicable law. Owner shall identify the applicable wage determination and the reporting schedule at the start of the agreement.
Summer windows and the school calendar
Schools are occupied for much of the year, and many of the buildings are lightly staffed in the evenings and on weekends. Summer and the longer breaks are when work that would disrupt classrooms gets done, which also means every contractor wants the same weeks. Planning the calendar well before the school year ends protects both the work and the occupied months that follow.
| Period | Typical focus | Planning note |
|---|---|---|
| Before the cooling season | Rooftop unit and split system inspections, condenser cleaning, controls and economizer checks | Finishing before the first hot weeks avoids classroom complaints |
| During the school year | Routine inspections, filter changes, responding to classroom comfort issues, food service refrigeration | Work in occupied spaces needs coordination with site staff |
| Summer break | Larger tasks, equipment that must be shut down, repairs deferred during the year, replacements | Reserve access dates with site administrators early |
| Winter and spring breaks | Boiler and heating checks, short shutdowns, catch-up items | Shorter windows suit small scopes |
| Before the heating season | Boiler startup, combustion checks, hydronic pump and valve inspection | Combine with the heating-season inspection if the campus has a central plant |
Food service areas are easy to overlook. Cafeteria walk-ins, reach-ins and ice machines need attention before the school year starts, not after the first week of meals. The seasonal maintenance calendar for Southern California gives a general framework you can adapt to your campus.
Where a project involves K-12 construction or modernization, DSA review and approval can apply. That is outside routine maintenance, but a maintenance contractor should be able to tell you when a repair crosses the line into work that needs it. Confirm current requirements with your architect or district facilities staff.
Multi-year terms, renewals and scope changes
Public agencies often prefer agreements that run for several years, sometimes with options to renew. The benefits are real: stable pricing structure within the agreement, a contractor who learns the campus, and fewer solicitations for staff to run. The risk is that a campus changes while the contract does not.
- Asset list updates. Define how new, removed or relocated units are added or dropped, and who authorizes the change.
- Renewal language. State how renewal is decided, by whom, and what information the agency will review first.
- Scope adjustments. Say how frequency or coverage can be changed between renewals, for example if a classroom wing is converted.
- Termination. Include a fair path for either party to end the agreement, in line with the agency's rules.
- Response expectations. Describe how urgent calls are handled, and how repair work outside the base scope is quoted and approved. See maintenance contract terms, response times and exclusions.
On-call arrangements are a related structure used by many agencies. The on-call HVAC service agreement scope of work page describes how those differ from a planned maintenance program.
Documentation that survives an audit
Public records live a long time. A maintenance report may be read by the district's business office, a board member asking why a boiler was replaced, an auditor checking that services paid for were delivered, or an oversight body reviewing a funding source. Records need to be dated, attributed and tied to specific assets.
- Asset-level history. What was serviced, by whom, on what date, and with what readings.
- Photos. Before and after images of coils, drains, belts and anything replaced.
- Findings and recommendations. Separate completed work from items that need approval and items to monitor.
- Payroll and compliance records. Kept in a form the agency can produce on request.
- Invoices that match the visit. Each invoiced visit should correspond to a report.
The DaVinci Portal is included with service and keeps these records at the asset level through QR-coded labels. A district can see the complete history of one rooftop unit without searching through email. The companion page on maintenance reporting and documentation explains what a good report contains and how to read trends.
Preparing your agency to buy well
- Build or update the equipment inventory for every site before writing the scope.
- Decide which assets are in the base program and which are repair-only.
- Identify which spaces are critical, such as food service, server rooms, health offices and gyms with specific ventilation needs.
- Confirm the labor requirements that apply, including prevailing wage and registration.
- Set the calendar for access, including summer, breaks and any restricted dates.
- Define how new assets and scope changes are approved.
- Decide what documentation the board, auditors and site staff each need.
Davinci serves public agencies and schools in Orange County, with larger public and bid work also in Los Angeles County, the Inland Empire, San Diego County and Ventura County. See the schools industry page for more on the building types involved.