HVAC and Mechanical Construction Leads in St. Louis (2026): 94 Projects in the Award Window
To find HVAC construction leads in St. Louis, work from building permits and time the call to the build stage. On October 9, 2026, 94 permitted projects in the City of St. Louis were still at the point where HVAC is awarded. The general contractor or builder awards the mechanical package; on commercial work a mechanical engineer designs it first, and on multi-unit residential the developer often sets the equipment standard. Builtie reads the permits, estimates each project's stage and attaches the builder or general contractor with a verified decision maker.
The same four steps, whether the buyer is a builder, a designer, an owner or a company you want to acquire.
How many HVAC projects are open in St. Louis right now
| Measure | St. Louis |
|---|---|
| Projects in the HVAC award window | 94 |
| New buildings / renovations and alterations | 4 / 90 |
| Rank among 25 markets for HVAC | 20 of 25 |
| Newest permit in the St. Louis feed | October 8, 2026 |
4% of them are new buildings and 96% are renovations, additions or alterations, so most of it sits in renovations and fit-outs, where the owner, a designer or a renovation contractor often makes the call. St. Louis ranks 20 of 25 markets Builtie covers for HVAC, behind Grande Prairie (117 projects).
A project counts when its permit was issued in the last four years, the build is still inside the stage when HVAC is awarded, and the job is big enough to be worth quoting: at least $6k of HVAC work. Trade sub-permits are grouped into their parent project, so this is a count of projects, not permits.
Read October 9, 2026 from Builtie's permit data: the ten largest of 25 markets, plus St. Louis.
When HVAC is awarded, and who decides
Builtie times HVAC from about 20% of the way through the build to about 45%, with the last realistic approach at about 55%. The general contractor or builder awards the mechanical package; on commercial work a mechanical engineer designs it first, and on multi-unit residential the developer often sets the equipment standard.
Tap a stage. The highlighted stage is where HVAC is typically awarded.
What to lead with when you call a builder in St. Louis: load calculations, equipment lead times, energy-code compliance and duct coordination while the frame is still open.
What the St. Louis data covers
The data is the City of St. Louis's own building permits. Neighbouring cities issue their own permits and are not in this count. St. Louis joined the feed recently, so every project counted here was permitted in the last 90 days and the counts will grow as the history fills in. St. Louis County is a separate permit office.
Trades bought around the same stage in St. Louis
| Trade | Projects in the award window | Award window |
|---|---|---|
| Electrical leads in St. Louis | 90 | 20% to 45% |
| Plumbing leads in St. Louis | 63 | 20% to 45% |
| Roofing leads in St. Louis | 57 | 15% to 35% |
| Windows, Doors and Glazing leads in St. Louis | 74 | 15% to 35% |
| Waterproofing leads in St. Louis | 32 | 10% to 35% |
| Masonry leads in St. Louis | 38 | 10% to 30% |
Every trade in St. Louis: St. Louis construction leads by trade. Every market for HVAC: HVAC and Mechanical construction leads by city.
Plans
Builtie's Starter plan is $79 per seat per month (CAD) for 20 projects; Growth is $99 for 50 projects and adds the LinkedIn and email outreach you run yourself. Opening a project spends one credit, and the decision makers, emails, phones and AI call script inside it are included. Your monthly credits reset at each renewal, and extra credit packs are valid for 30 days. The free trial runs 7 days with 10 projects. Custom, where Builtie's team runs the outreach for you, starts from CAD $1,500 a month on top of a Growth seat.
Builtie's deepest coverage is in the Greater Toronto Area, where it started; depth in any city depends on what that municipality publishes. Ask for live sample projects in your own service area before you buy.
Frequently asked questions
How do I find HVAC construction leads in St. Louis?
Start from building permits, not bid boards: most private HVAC work is awarded by the builder or general contractor without a public bid. Builtie reads the City of St. Louis's permits, keeps the projects still inside the HVAC award window (94 on October 9, 2026) and attaches the builder or general contractor with a verified decision maker.
When should HVAC and mechanical contractors contact a builder in St. Louis?
Builtie times HVAC from about 20% of the way through the build to about 45%, with the last realistic approach at about 55%. After that the package is usually awarded, and the project is better used as an introduction for the builder's next job.
Who awards HVAC work on new construction in St. Louis?
The general contractor or builder awards the mechanical package; on commercial work a mechanical engineer designs it first, and on multi-unit residential the developer often sets the equipment standard.
How many HVAC projects does Builtie track in St. Louis?
94 projects were inside the HVAC award window on October 9, 2026: 4 new buildings and 90 renovations or alterations. The count refreshes hourly.
What does Builtie cost?
Starter is $79 per seat per month for 20 projects; Growth is $99 for 50 projects and adds LinkedIn and email outreach. There is a 7-day free trial with 10 projects.