Estimating and bidding

How to price general conditions

Price general conditions from the schedule, not as a flat percentage. List every job-site cost that is not part of a trade scope, split it into time-based costs (per week or month) and one-time costs, multiply the time-based items by the project duration, and add the rest.

Two construction professionals review paper plans beside a tablet at a jobsite workbench.
Plan reviews connect field conditions, drawings, and the next decisions on a job. AI-generated illustration.

To price general conditions, build them up from the schedule. Make a list of every job-specific cost that does not belong to a trade: supervision, the trailer, temporary utilities, dumpsters, cleanup, safety, small tools, permits, and so on. Split the list into costs that run by the week or month and costs that happen once. Multiply the time-based items by the planned duration, add the one-time items, and you have a general conditions number tied to how long you will actually be on site. A flat percentage of the trade costs ignores the one thing that drives this budget most: time.

One naming note. "General conditions" also refers to the contract document (for example, the general conditions of the contract for construction) that sets the rights and duties of owner and contractor. This guide is about the cost: the job overhead an estimator carries in the bid, often listed under Division 01 General Requirements in a specification.

What goes in general conditions vs overhead

General conditions are job overhead: costs caused by this project and charged to it. Company overhead is the cost of running the business (office rent, accounting, the owner's salary, estimating) and is recovered through markup. Keep them separate. If the project manager's time is in general conditions on one bid and in markup on the next, your numbers cannot be compared and your overhead rate drifts. Whatever split you choose, write it down and use it on every estimate. Contracts also decide this for you sometimes: on cost-plus and GMP jobs, the contract often defines exactly which general conditions costs are reimbursable and which are covered by the fee.

Step by step: building the general conditions estimate

1. Start with the schedule

You cannot price general conditions without a duration. Build at least a summary schedule (mobilization, foundations, structure, dry-in, interiors, closeout) and note which phases need which staff. A construction schedule template is enough at bid stage.

2. Price staff by phase, not for the whole job

A superintendent may be full time from mobilization to substantial completion, while a project manager is half time and an assistant superintendent only joins during interiors. Price each person by weeks on the job times a loaded weekly cost, using the percentage of their time this job will really take.

3. List time-based site costs

  • Field office trailer, storage containers, and furniture.
  • Temporary power, water, toilets, and internet.
  • Superintendent vehicle and fuel.
  • Dumpster pulls (estimate pulls per month by phase).
  • Equipment kept on site for general use, such as a forklift or a site lift.
  • Fencing, security, and traffic control.
  • Ongoing cleanup labor and safety supplies.

4. List one-time costs

  • Mobilization and demobilization of the trailer and site setup.
  • Permits and fees the contractor carries, if not paid by the owner.
  • Surveys and layout, testing not carried by the owner, and signage.
  • Final cleaning, closeout documents, and as-built drawings.
  • Bonds and builder's risk insurance, if the contract makes them the contractor's cost (some estimators carry these below the line instead).

5. Read Division 01 and the supplemental conditions line by line

Specs often require things that cost real money: a dedicated owner's field office, weekly photos, a scheduling consultant, specific temporary heat, or extended warranty administration. The supplemental conditions may add insurance limits or reporting. Every requirement there needs a line, or a clear exclusion.

6. Sanity-check the total

Compare the result with finished jobs of similar size and duration. Look at it two ways: as a cost per week and as a share of total cost. If this bid is far off your history on either measure, find out why before bid day.

Worked example: a 7-month retail build-out

Say a general contractor is bidding a 30-week, $3.1 million retail build-out. The weekly costs below are illustrative for this company, not market rates.

Example: general conditions estimate
ItemBasisCost
Superintendent (full time)30 weeks x $3,200$96,000
Project manager (40 percent)30 weeks x $3,500 x 0.40$42,000
Assistant superintendent (interiors only)12 weeks x $2,100$25,200
Trailer, storage, utilities, toilets7 months x $2,600$18,200
Dumpsters28 pulls x $650$18,200
Cleanup labor30 weeks x $900$27,000
Vehicle and fuel7 months x $1,100$7,700
Mobilization, demobilization, signageOne time$9,500
Final cleaning and closeout documentsOne time$11,000
Total general conditions$254,800

That is about $8,490 per week. Now suppose the owner's schedule gets pushed four weeks by a late permit. The time-based items keep running: four more weeks of superintendent, PM share, trailer, cleanup, and vehicle adds about $25,450 (dumpster pulls may slow, but rarely stop) with no added scope. This is why extended general conditions appear in delay claims, and why a weekly rate is worth stating in your bid or proposal.

The same logic works in reverse when an owner asks you to accelerate. A shorter schedule cuts weeks of general conditions but usually adds overtime, extra supervision, and more equipment on site at once. Price both sides before agreeing to a faster finish date, and show the owner the weekly rate so the trade-off is visible.

Mistakes to avoid

  1. Using a flat percentage. A $2 million job that lasts 10 months needs far more general conditions than a $2 million job that lasts 5.
  2. Pricing staff for the whole job at full time when they are shared, or pricing them at half time when the job will really eat them alive.
  3. Skipping closeout. Punch, O&M manuals, attic stock, and as-builts take weeks of staff time after the trades leave.
  4. Missing Division 01 requirements like owner's offices, temporary heat, or third-party scheduling.
  5. Carrying the same cost twice, such as dumpsters in general conditions and in the demolition sub's quote. Check sub quotes against your list.
  6. Forgetting winter. Temporary heat, enclosures, and snow removal belong in general conditions when the schedule runs through cold months.

Tracking general conditions after award

Set up general conditions as their own cost codes in the job budget, with the weekly rate visible. Each month, compare spent to date against weeks elapsed. A job that is 50 percent through its duration and 65 percent through its general conditions budget is in trouble regardless of what the trades are doing. The construction budget template has room for this split.

Smart Business Automator carries the estimate's general conditions lines into the job budget and tracks them alongside trade costs in its job cost and WIP views. See estimate to project handoff automation.

Frequently asked questions

What is the difference between general conditions and general requirements?

General requirements usually refers to Division 01 of the specifications, which lists the administrative and temporary requirements. General conditions is the cost the contractor carries to meet those requirements and run the site, and also the name of a standard contract document.

Are general conditions a percentage of the project cost?

Many contractors check them as a percentage, but they should be built from the schedule and the site needs. Duration drives the biggest items, such as supervision and site facilities.

Is the project manager part of general conditions or overhead?

Either can be correct depending on your company's policy and the contract. On cost-plus and GMP work, the contract usually decides. Pick one approach for hard bids and use it every time.

What are extended general conditions?

They are the added time-based job costs when a project runs longer than planned, such as more weeks of supervision and site facilities. Contractors often claim them when the owner causes the delay.

Written and edited by

Maurice Francois writes and edits construction operations guides for Smart Business Automator. More from Maurice on the Scaling Legends podcast.

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