A construction bid proposal is the document a contractor hands an owner, an architect or a general contractor to be compared against other bids, and a contractor bid proposal is the same document from the trade's side of the table. It wins on clarity: the scope by drawing and specification reference, the work included in plain words, the exclusions numbered, the allowances stated, the schedule assumed, the payment terms and the validity date, and one total. The number on it comes from the estimate: the takeoff priced with waste, the hours at a loaded rate, subcontractors, equipment, overhead and markup, which the estimate template on this site works and prints as lines the company keeps.
Scope by reference, not by memory
The proposal names the drawings, revisions and specification sections it is based on, so a later revision is a change order rather than an argument. It describes the included work in the trade's own words, names the products where the specification allows a choice, and lists what is by others. A proposal that says the work will be done per plans and specs without naming them has bid a document it has not seen.
Exclusions, allowances and the schedule
Exclusions are numbered and specific: permits, testing, temporary power, dewatering, rock, hazardous materials, cranes, cleaning by others. Allowances state the amount carried for items not yet selected and how the difference is handled. The schedule states the start the price assumes, the working days and what delays cost, because a bid priced for spring and started in winter is a different bid. The validity date protects the company from material prices that move.
One total, and the estimate behind it
The proposal shows one total, or a base bid and priced alternates, with the payment schedule and the retainage terms. The estimate behind it, quantities, unit prices, hours, rates, overhead and markup, stays with the company, and Pro on this site files it against the customer and the job, so an alternate that is accepted in a month or a change order that arrives in a year is repriced from the same numbers.
Questions people ask about construction bid proposal
What should a construction bid proposal include?
Drawing and specification references, the included scope, numbered exclusions, allowances, the assumed schedule, payment terms, a validity date and one total or a base bid with alternates.
Should the proposal show unit prices?
Only where the bid form asks for them; otherwise show one total and keep the unit prices, hours and markup in the estimate the company holds.
How is a contractor bid proposal different from an estimate?
The estimate is the company's arithmetic; the proposal is the customer-facing offer built on it, with scope, exclusions and terms the estimate does not carry.