Construction bidding is the process where contractors submit proposals to a project owner, offering to complete a construction project under specific terms and at a set price.
The winning bid forms the basis of the contract between the two parties. The bidding method a project owner chooses is a procurement method decision, and it affects everything from price competition to project risks.
Bidding is not the same as estimating. An estimate calculates what the work will cost the contractor, covering labor, materials, equipment, and overhead. A bid takes that estimate and adds strategy.
It accounts for profit margin, market conditions, and how badly the contractor wants the job.
Realistic cost estimates come first, and the bid strategy builds on top of them.
Most construction bidding falls into one of three methods: open, selective, or negotiated. Each one changes who can compete, how much price competition exists, and how much control the project owner has over who ends up on the job.
Here is how each approach works.
Open bidding, also called open tendering, allows any contractor to submit a bid on a project. The project owner advertises the opportunity publicly, and anyone who meets the basic requirements can compete.
This is the standard method for government and most public-sector projects, where regulations require transparency and fair access to public work.
Bids are typically submitted as sealed bids and opened at a set time. On public projects, the contract usually goes to the lowest responsible bidder, meaning the lowest-priced contractor who also proves they can actually deliver the work.
Many open bids also require a bid bond, which guarantees the contractor will honor their price and sign the contract if selected.
The upside for owners is a competitive bidding process, since multiple bids drive pricing down. The downside for contractors is the crowded field.
Win rates on open bids run low, so contractors need a clear bid strategy about which opportunities are worth the time it takes to prepare a proposal.
Selective bidding, or selective tendering, narrows the field before bidding starts. The project owner invites a limited group of contractors to bid, and only qualified contractors who pass a prequalification process make the list.
Owners screen for track record, financial stability, safety record, and experience with the same project type.
This method is common on complex projects where the owner cares as much about execution as price. A hospital renovation or a data center build is not the place to gamble on an unknown low bidder.
By vetting the field first, the owner keeps price competition alive while cutting the risk of hiring a contractor who cannot handle the scope.
For contractors, selective bidding is a better bet than open bidding. The competition is smaller, and an invitation means the owner already sees you as capable. Landing on those shortlists depends on a proven track record and relationships built on previous projects.
Contractors who document their wins and keep past project data organized have an easier time making the case.
Negotiated bidding, also called negotiated tendering, skips the competition entirely. The project owner selects a single contractor and negotiates the price, scope, and terms directly.
This method is most common on private projects, where owners can hire whoever they want without the procurement rules that govern public work.
Owners choose negotiation when they value speed, trust, or specialized expertise over price competition.
An existing relationship often drives the decision. A developer who has worked with the same contractor on previous projects knows what they will get and skips the time and cost of running a full bid process.
The tradeoff is the lack of competing bids, which makes it harder for the owner to know whether the price is right. Contractors in negotiated deals still need realistic cost estimates and transparent pricing to keep the relationship healthy.
For contractors, negotiated work is the best position to be in. It usually comes from repeat clients, which makes tracking every past bid, contact, and project outcome a direct investment in future negotiated opportunities.
Bidding methods decide who competes for a project. Project delivery methods decide how the design, bidding, and construction phases fit together.
The two work together, and the delivery method an owner picks changes when bidding happens and what contractors bid on.
Design-bid-build is the traditional delivery method and the one most contractors know best. The project owner hires a designer first, waits for completed plans, then opens the project to bids.
During the bid preparation, contractors review and price the finished design, and construction begins after the contract is awarded.
Because the design is complete before bidding starts, contractors bid on a defined scope with clear project specifications. That makes design-bid-build a natural fit for open bidding, and it remains the default on most public projects.
The main drawback is time. The phases run one after another, so the project takes longer from concept to completion. Coordination issues can also surface during construction, since the designer and contractor never worked together before the award.
Design-build puts design and construction under one roof. The owner hires a single firm to handle both, and that firm is selected through a bidding process that weighs qualifications, design approach, and cost as a package rather than price alone.
For contractors, design-build bids are more work to prepare. The proposal covers a design concept, not just a price on someone else's plans. The payoff is less price competition and more room to win on expertise.
Owners pick design-build when they want faster project delivery and a single point of responsibility, since overlapping the design and construction phases shortens the overall timeline.
In construction management at risk, the owner hires a construction manager early, during the design phase. The construction manager advises on cost, scheduling, and constructability while the design develops, then commits to a guaranteed maximum price before construction begins.
If costs run past the guaranteed maximum price, the construction manager absorbs the overage.
Bidding here happens at two levels. The owner selects the construction manager based on qualifications and fees, and the construction manager then bids out the trade work to subcontractors.
For specialty contractors, this means the bid audience is the construction management firm, not the project owner.
Strong relationships with active construction managers in your market are worth as much as any public bid board.
Job order contracting covers repeat, smaller-scope work rather than a single defined project. The owner awards a contractor an ongoing contract with pre-set unit prices, and individual jobs are issued as orders against it.
Pricing is settled up front, so each new job skips the full bidding process and final pricing comes from the established unit rates.
Public agencies, school districts, and facility owners use job order contracting for maintenance, repairs, and renovations.
For contractors, winning one contract means a pipeline of recurring work without preparing a new bid every time. Quality control and responsiveness decide whether the arrangement gets renewed.
Whatever bidding method a project uses, the process moves through the same five steps. Here is what happens at each stage and what contractors need to get right.
The process starts when the project owner announces the project and invites bids. On open bids, that means public advertisement. On selective bids, invitations go to a shortlist of potential contractors.
The owner issues bid packages containing drawings, specifications, contract terms, and deadlines. A request for proposal (RFP), request for quote (RFQ), or invitation for bid (IFB) frames what the owner expects back.
Contractors should read the full package before committing time, since scope gaps and unusual contract terms show up here first.
This is where the estimate gets built. Contractors review the bid package, perform takeoffs, price labor and materials, collect subcontractor quotes, and add overhead and margin. Accuracy decides everything downstream.
A bid built on realistic cost estimates protects margin, while a rushed number either loses the job or wins it at a loss. Deadlines are unforgiving, so teams juggling several bids at once need a clear view of every due date. Missing one means all the estimating work goes in the trash.
Contractors submit bids before the deadline in the format the owner requires. Public projects usually demand sealed bids, submitted physically or through a bid portal, and late submissions are disqualified with no exceptions.
This step sounds simple, but administrative errors kill winning bids. Missing forms, unsigned documents, or an absent bid bond can get a strong number thrown out on a technicality.
The project owner reviews the submissions against evaluation criteria set in the solicitation. On public open bids, price leads and the lowest responsible bidder wins. For selective and negotiated work, owners weigh qualifications, schedule, approach, and track record alongside price.
The most competitive bid is not always the cheapest one. Owners increasingly score value, meaning contractors who explain their pricing and flag risks honestly stand out from those who just submit a number.
The owner notifies the winning contractor, and the two parties finalize the contract. Losing bidders should still ask for feedback, since knowing whether you lost on price, qualifications, or paperwork shapes the next bid strategy.
Winning contractors move into preconstruction, and the bid documents become the baseline the project gets measured against. Every bid, won or lost, produces data. Contractors who record outcomes and review their hit rates learn which project types and owners are worth chasing.
For project owners, the choice comes down to four factors.
Owners who want to reduce project risks on complex projects lean on selective bidding or a construction manager with a guaranteed maximum price.
For contractors, the question flips: which bids deserve your hours?
Chasing every open bid burns estimating time on long odds, while ignoring them entirely means missing volume. A healthy pipeline usually mixes all three.
Open bids for volume, selective bids where your track record earns invitations, and negotiated work from repeat clients as the anchor.
The contractors who win consistently are not the ones who bid the most. They pick the right opportunities, price them accurately, and follow up until the decision is made.
Knowing the types of bidding in construction only pays off if you can manage the bids themselves.
When due dates live in one spreadsheet, contacts in another, and proposals in email threads, deadlines slip, and follow-ups die. Manual data entry eats the hours your estimators should spend pricing work.
Followup CRM is a construction-specific CRM built to fix exactly that. A digital bid calendar keeps every due date in front of the team. Lead and bid tracking shows where each opportunity stands in the pipeline, from first contact through contract award.
The proposal generator builds branded proposals with e-signature, and sales dashboards show your win rates by project type and customer, so you know which bids are worth chasing. Voice AI even handles the data entry when you speak what happened after a call.
Book a demo to see how it fits your bid process.
The three types of bids are open, selective, and negotiated bids. Open bids maximize competition, selective bids limit the field to vetted contractors, and negotiated bids skip competition for direct terms.
Contractors juggling all three win more work when every deadline, contact, and proposal lives in one place, which is what Followup CRM is built for.
Construction bidding breaks down into three primary approaches: open bidding, where any contractor can compete, selective bidding, where only prequalified contractors are invited, and negotiated bidding, where the owner deals with a single contractor directly.
Delivery methods like design-bid-build and design-build shape how those bids are structured.
Followup CRM helps contractors manage bids under any of these methods with a shared bid calendar and pipeline tracking.
The seven common construction project types are residential, commercial, institutional, industrial, infrastructure, agricultural, and environmental construction.
Each category comes with its own bidding norms, with public infrastructure and institutional work leaning on open bidding and private commercial work often negotiated.