How to read a construction site sign for bid date and start date

You're driving your territory, you see a new permit board go up on a lot that was empty last month, and you pull over to read it before you lose the light. That sign is the cheapest lead-gen tool in your job. Most reps just don't know how to read the whole thing.

What's printed on the sign

Permit boards vary by jurisdiction, but most carry the same core fields: owner or developer name, general contractor, architect of record, sometimes the structural engineer, a permit number, and the scope of work in a line or two ("new construction, 3-story mixed use" or "tenant improvement, 12,000 sf"). Some municipalities require the permit number and inspection card to be visible from the street; others just want the GC's name and license number big enough to read from a truck window.

Most boards don't carry a bid date, because a sign goes up well after bidding closes. The sequence runs design, bid, award, permit, sign, so if you're reading the board for the first time, the bid window closed before the sign ever existed.

A start date is a different animal, and it's sometimes missing from the sign entirely. The permit issue date stamped on the card tells you when the clock legally started. Site activity, mobilization trailers, silt fence, a grading contractor's truck parked on the shoulder, tells you when work started on the ground, which can lag the permit by weeks depending on weather, subcontractor scheduling, or an owner waiting on financing to close.

Finding the general contractor when the sign doesn't say

Plenty of sites post a sign with just the project name and a phone number, no GC spelled out. A few ways reps in the field run this down:

The permit number off the board is usually searchable through the city or county building department's online portal. Most of those records list the contractor of record and their license number, which you can then run through your state's contractor licensing lookup to confirm the business name matches who's running the job.

If there's an architect listed but no GC, call the architect's office. They'll often tell you who won the bid, or at least point you to the owner's rep, especially if you frame it as "following up on a project we bid materials for" rather than a cold ask.

Equipment on-site is its own clue. A crane with a company name on the boom, a dozer with a rental yard's decal still on the door, a job trailer with a logo, these tell you who's mobilized before a sign update catches up. Reps who've been doing this a while know half the GCs in their territory by their equipment before they ever read a name off a sign.

Why the sign alone doesn't tell you where the job is now

A sign tells you who's building and roughly what, once, and it doesn't update when the job moves from dirt work into foundations or from structural steel into exterior envelope. You can drive past the same sign in month two and month eight and it looks identical, while the call you want to make depends entirely on which phase the job is in. A rep selling rebar accessories cares about the week footings get poured, which comes months after whatever week the sign first went up.

A permit board can't track that for you. Plant On Site reads what's actually parked and stacked on a site from imagery updated roughly every two weeks, and flags whether a given address is still in groundworks, framing up structure, or already into fit-out, so your call lands when your product gets specified.

Next time a sign goes up in your territory, pull the permit number, then let the site tell you when it's worth the drive back.