How to bid construction jobs without underpricing them.
Most contractors don't lose bids on price. They lose on speed, on a vague scope, on a quote that looks like it was typed in a hurry. Bidding is a repeatable process: qualify, scope, take off, cost, mark up, propose, follow up. Run it the same way every time and you win more of the right jobs at the right price.
To bid a construction job: qualify whether it's worth bidding, do a site visit and define scope, take off quantities, cost the work from your own recent numbers, add overhead, markup, and contingency, then send a clear branded proposal within 24 hours and follow up two days later. The fastest contractor with a professional, well-scoped bid wins more often than the cheapest one.
- Qualify the job before you bid
- Site visit and scope
- Quantity takeoff
- Cost it from your own numbers
- Overhead, markup, and contingency
- Write the proposal
- Send fast, then follow up
- Common bidding mistakes
01Qualify the job before you bid
Bidding takes real hours, and the contractors who bid everything win nothing profitably. Before you invest the time, decide whether the job is worth it: is it the kind of work you're good at and want more of, is the budget realistic, is this a client you want, and can you actually hit the timeline? A fast, honest "this isn't for us" is worth more than a half-hearted bid that lowers your win rate and your margin.
02Site visit and scope
You can't price what you haven't seen. Walk the site, and use the visit to surface the things that wreck budgets later: access, existing conditions, what's behind the walls, who else is on site, what the client actually expects versus what they said. Then write the scope down, what's included and, just as important, what's excluded, before you price a single line. Most bidding disputes are really scope disputes in disguise.
03Quantity takeoff
A takeoff is measuring the work and listing real quantities: square feet, linear feet, cubic yards, fixture counts. This is the line between a bid and a guess. A number pulled from memory or "feels like about ten grand" is how contractors win jobs they lose money on. Build the bid from quantities you measured. The construction estimate template walks through the takeoff and line structure in detail.
04Cost it from your own numbers
Price labor, materials, equipment, and subcontractors from your own recent job costs, not national averages or what you charged three years ago. Material prices move, labor rates move, your productivity is specific to your crew. The single best estimating asset you can build is a living unit-price list from your own completed jobs, what things actually cost you, updated as you go.
05Overhead, markup, and contingency
Direct cost is not your cost. Add overhead, the rent, insurance, vehicles, software, and the unbillable hours of running the business, then your markup or target margin on top, plus a contingency for the unknowns every job hides. And mind the markup-versus-margin trap: a 25% markup is a 20% margin, not the same number. Run the bid through the markup & margin calculator to confirm the profit is actually there before you send it.
06Write the proposal
The number is half the bid. The other half is the document. A winning construction proposal states the scope, breaks out the price enough for the client to trust it, lists inclusions and exclusions, sets payment terms, and carries an expiration date. Good / Better / Best options convert better than a single take-it-or-leave-it figure. The full anatomy is in the construction quote guide.
07Send fast, then follow up
Customer intent decays fast. A clean bid that lands within 24 hours of the walkthrough beats a more detailed bid that shows up five days later, most of the time, because you got there first and looked like the professional. Then follow up: a polite check-in 48 hours after sending wins more jobs than any price cut. If your process is "I'll write it up this weekend," you're losing bids you priced correctly to contractors who simply replied faster.
08Common bidding mistakes
- Bidding jobs you don't actually want, lowering your win rate and your prices.
- Pricing from memory instead of a real takeoff.
- Forgetting overhead, so the "profit" is just covering the truck.
- Confusing markup with margin and underpricing every job.
- No exclusions, so every assumption becomes your cost.
- A bid that looks like a text message, no branding, no breakdown.
- Sending it days late and never following up.
- Racing competitors to the bottom on price instead of winning on speed and clarity.
Make the whole process faster
Most of bidding is structurally repeatable, which is exactly why it pays to systematize. Sitetraq turns a job description and your own line-item history into a drafted estimate and quote in minutes, applies your markup automatically, and keeps the bid, the job, and the invoices on one thread, so the 24-hour rule becomes your default instead of your aspiration. See how Sitetraq handles construction quoting.
Bidding FAQ
After covering direct cost and overhead, most small construction businesses add a markup of roughly 15–35% depending on trade, risk, and market, plus a contingency of about 5–10% for unknowns. Remember markup is not margin: a 25% markup is a 20% margin.
The two most common reasons are speed and presentation, not price. A clean, professional bid that arrives within a day usually beats a slightly cheaper one that arrives a week later. Vague scope, no breakdown, no follow-up, and slow turnaround lose more bids than being a few percent high.
No. Bidding takes real time, and bidding work that's the wrong type, the wrong budget, or the wrong client lowers your win rate and your margin. Qualify jobs first and put your bidding effort into the ones you actually want and can win profitably.