What are general conditions in a construction contract?
General conditions in construction are the project-specific costs of running the job rather than building it: supervision, temporary facilities and utilities, site security, final cleaning, insurance and bonds, permits and closeout. They sit in CSI MasterFormat Division 01 and are usually billed monthly through the schedule of values.
What Are General Conditions in Construction?
General conditions in construction are the non-trade, project-specific costs of running a job: supervision, temporary facilities, permits, insurance, bonding, and cleanup. They carry no material or installed-work quantity, yet they appear on every project and are the first costs to drift when a schedule slips. In CSI MasterFormat Division 01, General Requirements, these items are written as requirements rather than products, which is why a takeoff of the drawings alone never captures them.
Preliminary costs in construction follow the same logic. A superintendent paid for 12 months is a preliminary cost even though no one installs it; a portable toilet rented for the same 12 months is equally preliminary. The distinction that matters on a bid is whether the cost is tied to the work (trade labor and material) or tied to the job (time, site, and risk).
A general conditions estimate example shows the shape: 12 months of a superintendent at a loaded rate, four months of a crane, 12 months of site security, and a consumables allowance per month. Each line has a unit and a measurement rule, so a reviewer can retrace the math. When the schedule moves, the duration-driven lines move with it.
General conditions vs. general requirements vs. preliminary costs
General requirements are the administrative terms of the contract: submittals, RFIs, closeout documents, as-built drawings, punch list procedure, and the schedule of values format. They tell you how the job is run, not what it costs to run it. General conditions price the resources that satisfy those requirements, and preliminary costs is the broader term some owners and international contracts use for the combined set. On a U.S. bid, keep the three separated so a reviewer can see which pages are contract language and which are dollars.
Direct vs. indirect: where general conditions sit
General conditions are indirect costs. They support the whole project rather than a single CSI division, so they sit outside the trade breakdown and are billed through Division 01 or a separate general conditions schedule. Our breakdown of direct vs indirect costs in construction shows how the split is drawn on a typical estimate sheet. Home-office overhead is a third layer: rent, estimating staff, and company insurance that exist whether or not this job is awarded.
Which Preliminary Costs Belong in General Conditions?
The line-item inventory is the deliverable. Build it once, then adjust durations and quantities per project. Every line needs a unit and a measurement rule, because "general conditions" as a lump sum cannot be audited and cannot be defended in a change order.
The general conditions vs general requirements split matters here: the contract may require a field office with a plan table and internet, a weekly progress meeting, and a daily cleanup; the general conditions line prices the trailer rental, the utilities, and the labor hours to meet those requirements.
| Line item | Unit | Measurement rule |
|---|---|---|
| Project superintendent | Staff-month | Schedule months × loaded hourly rate × hours per month |
| Project manager / engineer | Staff-month | Assigned months × loaded hourly rate × hours per month |
| Field office trailer | Month | Rental months + delivery and setup |
| Portable toilets | Unit-month | Count × months on site |
| Dumpster service | Pull | Pulls per month × months, plus disposal tonnage |
| Temporary power and water | Month | Connection charge + monthly service |
| Site security | Hour or month | Guard hours per week or monitoring subscription |
| Final cleaning | Square foot | Floor area × unit rate, or defined lump sum |
Labor and supervision line items
Staff lines are staff-months × loaded hourly rate × hours per month. The project superintendent, project manager, project engineer, and safety officer each get a duration tied to the schedule, not the contract value. Loaded rate means base wage plus labor burden: payroll taxes, workers' compensation, health and retirement, and paid time off. As a check, BLS wage data shows first-line construction supervisors and cost estimators at different median hourly levels, so a single blended rate across all staff hides real cost. Small tools and consumables are usually carried as a percentage of trade labor or a monthly allowance, stated explicitly.
Temporary facilities and site operations
Temporary facilities are priced by time and quantity: field office trailer rental per month, portable toilets per unit per month, dumpster pulls per month including disposal tonnage, temporary power and water by connection and monthly service, fencing by linear foot per month, and scaffolding by square foot of face per month. Site security runs as guard hours per week or a monitored alarm plus cameras per month. Final cleaning is priced by square foot of floor area or as a lump sum tied to a defined scope, and it belongs in general conditions, not in the finishes division.
Permits, fees, insurance, and bonds
Permit fees follow the jurisdiction's published fee schedule, often based on valuation or square footage, so the rule is the fee schedule itself, not a percentage guess. Builder's risk and general liability insurance are quoted as premiums per policy period against the contract value and payroll exposure. Payment and performance bonds are a premium percentage of the contract value, set by the surety after underwriting. Sales tax applies to taxable material and rental lines, not to labor, and the rate depends on the delivery jurisdiction.
How Do You Estimate General Conditions in Construction?
The arithmetic is a sum of duration-driven lines plus fixed and percentage lines. In formula form: general conditions = Σ(staff-months × loaded hourly rate × hours) + temporary facilities + permits + insurance and bond + small tools and consumables. What are general conditions in a construction contract, practically? They are the lines an estimator can defend with a schedule and a rate, not a number pulled from a prior job.
Use the percentage-of-contract-value method only as a sanity check. It cannot see a 12-month schedule on a small building or a 9-month schedule on a large one, and staffing follows duration, not contract value. Our construction cost estimating services build the line items from the schedule first, then compare the total against the percentage benchmark.
| Staff line | 12-month hours | 12-month cost | 9-month hours | 9-month cost |
|---|---|---|---|---|
| Superintendent at $60/hr loaded | 2,080 | $124,800 | 1,560 | $93,600 |
| Project manager at $75/hr loaded (half time) | 1,040 | $78,000 | 780 | $58,500 |
| Staff subtotal | 3,120 | $202,800 | 2,340 | $152,100 |
Duration-driven staffing: staff-months × loaded rate
Take a 12-month schedule with a superintendent at 40 hours per week and a loaded rate of $60 per hour. That is 12 months × 173.33 hours = 2,080 hours, or $124,800. Add a project manager at half time for 12 months: 1,040 hours × $75 loaded = $78,000. Staff subtotal: $202,800. Now compress the same scope to 9 months: 1,560 superintendent hours × $60 = $93,600, and 780 project manager hours × $75 = $58,500, for $152,100. The three-month difference is $50,700 on staffing alone, before facilities, which is why schedule drives this section.
Percentage-of-contract-value method and its limits
A percentage method multiplies contract value by a factor carried from prior jobs. It is fast and useful for a first-pass check, but it fails on fast-track work, phased occupancy, and long-lead procurement where the site stays open without trade production. It also hides the general conditions vs overhead and profit split, since the home-office markup is a separate line. When you review a construction site costs breakdown, confirm whether the percentage includes permits and bonds or excludes them.
Using a general conditions checklist
A checklist organized by CSI MasterFormat Division 01 keeps the estimate complete: supervision, field office, temporary utilities, temporary facilities, site security, dumpster and final cleaning, permits, general liability insurance, builder's risk, bonds, small tools, and consumables. Cross-check each line against the schedule and the contract's general requirements. For the closeout side, our schedule of values and billing format setup aligns the general conditions lines with the billing format so the owner sees the same units the estimate used. The same checklist structure carries into general contractor estimating when the bid package spans multiple trades.
What Percentage of Construction Cost Is General Conditions?
A workable planning range for general conditions is roughly 5–15% of hard construction cost on commercial building work, with the low end on large, long-duration projects and the high end on small, short ones. Treat that band as a sanity check on a priced line-item sheet, not as an estimate. The general conditions cost breakdown has to be built from duration, staffing, and the minimum charges that do not scale down with project size.
Two structural costs set the floor. A payment and performance bond is typically priced on contract value with a minimum premium that bites hardest on small contracts, and permits carry fixed review and inspection charges regardless of square footage. Site supervision is the largest variable: a full-time superintendent at the BLS national median wage for first-line construction trade supervisors, burdened, is a fixed weekly cost that divides across a smaller revenue base on a short job.
Typical ranges by project type and size
Documented guidance such as RSMeans general conditions sections and AACE estimate classification practice both point the same way: general conditions are duration-driven, so percentage of cost falls as project size and schedule length rise. AACE Class 3 or better estimates price these items individually rather than as a percentage. Use the range to challenge a number, then replace it with line items tied to the schedule.
Why small and short projects carry a higher percentage
The fixed components do not shrink. Mobilization, the bond minimum premium, permit fees, a field office setup, and the first month of supervision are largely the same on a $600,000 job as on a $2,000,000 one. Divide a fixed $70,000 of general conditions across $600,000 and you get about 11.7%; across $2,000,000 it is 3.5%. That arithmetic, illustrative here, is why the percentage moves. For a line-item build of these costs, see how to determine construction site costs.
| Project profile | Typical general conditions share of hard cost | Main driver |
|---|---|---|
| Tenant fit-out, under 8 weeks | Upper end of the band | Bond and permit minimums, short supervision window |
| Small ground-up building, 6–10 months | Middle to upper | One superintendent, portable toilet and dumpster package, fixed mobilization |
| Mid-size commercial, 12–18 months | Middle | Supervision spread over more revenue |
| Large multi-building, 24 months and longer | Lower end | Fixed costs amortized, staff scaled to phases |
| Heavy civil, multi-year | Lower end | Long duration, large contract value |
Typical ranges by project type and size
Short fit-outs and small ground-up buildings sit at the top of the 5–15% band because bond minimums, permit fees, and a single superintendent's salary are spread over little revenue. Mid-size commercial work typically lands mid-band once supervision is shared across a longer schedule. Large multi-building and heavy civil projects trend toward the low end because mobilization and field office costs amortize over years of work. None of these ranges substitutes for a schedule-driven takeoff of each line.
Why small and short projects carry a higher percentage
A portable toilet rental, a dumpster pull, a field office trailer, and a bond premium are close to fixed costs. On a six-week job they are incurred in full for very little production. Supervision compounds the effect: one superintendent is a minimum staffing level, and you cannot hire a fraction of one for a short project. Price the fixed block first, then add duration-driven items, and the percentage falls out of the arithmetic instead of being assumed.
General Conditions in Construction Contracts: Who Pays for What
The contract form decides how preliminary and general costs are priced and audited. Under a lump sum, general conditions are a fixed line the contractor carries and the owner pays whether or not the schedule holds. Under a guaranteed maximum price, they are usually a line in the GMP with a defined contingency above it. Under cost-plus, they are reimbursed at actual cost with a fee, which puts the burden of proof on the contractor's records.
Every general conditions in construction contract should state which items the owner furnishes. Common owner-furnished items are permanent power and water at the site, the builder's risk policy, and sometimes the permit fees. If the owner carries builder's risk, that line comes out of the contractor's general conditions and the premium is not marked up. If the contractor carries it, the policy cost and any deductible belong on the sheet.
Owner-furnished vs. contractor-furnished items
Write the split into the contract before pricing. Owner-furnished: permanent utilities, builder's risk, land, sometimes permits. Contractor-furnished: temporary utilities and distribution, project superintendent, field office, scaffolding, site security, final cleaning, and small tools. A line that appears in both columns gets paid twice, so reconcile the two lists against CSI MasterFormat Division 01 before the estimate is issued.
Allowances, reimbursables, and cost-plus treatment
Reimbursable general conditions need a paper trail: certified payroll or timesheets for supervision, invoices for rentals, daily reports for equipment on site, and a monthly reconciliation against the schedule of values. On cost-plus work, agree the markup on reimbursables in writing, because a 10% fee on a $40,000 crane rental is $4,000 that never appears in a labor line. Owners should require the same documentation from any GMP change order. Our billing schedule line-item service formats these lines so each month's billing ties back to the estimate.
Owner-furnished vs. contractor-furnished items
Put the split in a table in the contract, not in a paragraph. List each Division 01 item, name who furnishes it, and name who pays the invoice. Owner-furnished permanent power means the contractor prices only temporary power and distribution. Owner-carried builder's risk removes the premium from the contractor's sheet but not the deductible exposure, which should be capped. Reconcile both lists line by line before the bid is submitted.
Allowances, reimbursables, and cost-plus treatment
An allowance for temporary facilities needs a stated basis: a dollar figure, a scope description, and a rule for what happens when the actual cost exceeds it. Reimbursables under cost-plus need timesheets, invoices, and daily reports attached to each billing. A crane rental billed as a lump without the rental invoice and the days on site is unauditable. Agree the markup on reimbursables before work starts, and require the same backup on every change order.
Common Mistakes When Pricing Preliminary Costs
Most preliminary cost errors are not arithmetic errors; they are scope and duration errors. The sheet adds up, but the schedule it was built on was wrong, or an item was counted twice, or an escalation was never applied. Each of these has a traceable fix that lives in the estimate's assumptions page.
Underestimating schedule duration
General conditions scale with time, so a schedule slip of three months adds three months of supervision, field office, portable toilet service, and temporary utilities. Price those items from the construction schedule, not from a percentage. If the schedule is a bar chart without a resource-loaded duration, ask for the duration by phase and price supervision month by month. The general conditions percentage of project cost then follows from the arithmetic rather than driving it.
Forgetting escalation on multi-year jobs
A crane rental or scaffolding package priced at today's rate and used in year two is underpriced. Carry a separate escalation line for labor and equipment, and index material-driven items to published producer price data. Recent BLS producer price movements for steel mill products and copper wire and cable have been steep, which matters for temporary power distribution and structural temporary works. Do not bury escalation inside a contingency; keep it visible and auditable. Our guide to contingency in construction explains where the two lines separate.
Double-counting with home-office overhead
Superintendent time already carried in trade labor, or a project manager's salary already in the home-office overhead rate, appears again in general conditions and inflates the bid. Set a written allocation policy: which staff are charged to the project, which to overhead, and which to neither. The same rule applies to small tools and consumables, which are either a general conditions line or a trade labor percentage, never both. Permit fees are a pass-through cost, not a markup item, and should be shown at cost with the receipt.
Underestimating schedule duration
Price supervision, field office, temporary facilities, and service contracts from the schedule's month count. A job priced at eight months and built in eleven carries three extra months of fixed cost with no revenue to absorb it. Ask for the phase durations and the crew loading, then multiply the monthly rate by the actual months. Reconcile the result against the percentage range as a check, not as the source.
Forgetting escalation on multi-year jobs
Carry escalation as its own line for labor, equipment rental, and materials used in later phases. Index steel, copper, lumber, and ready-mix exposure to published producer price data rather than a guess. A crane rental contracted in year two at year-one rates is a known loss. Show the escalation rate, the base period, and the months it applies to so an owner can audit the number.
Double-counting with home-office overhead
Write an allocation policy that names each staff position and where its cost sits. Superintendent and project engineer go to general conditions; estimating and accounting go to home-office overhead; never both. Apply the same rule to small tools, consumables, and vehicles. Permit fees pass through at cost. A reviewer should be able to trace every dollar on the sheet to one bucket and only one.
How KNR Makes Every General Conditions Number Traceable
Every general conditions line we price carries four things: a unit, a measurement rule, the arithmetic, and the public data behind any rate that moves with the market. On a bid-ready sheet that means a superintendent line reads as weeks on site × 45 hours × a loaded rate, not as a round allowance. The same discipline applies to site overhead costs construction budgets absorb quietly, such as temporary utilities and small tools, because those are the lines most often estimated by feel.
Labor is built from the wage table below. We take the BLS median hourly wage for the trade, add a stated burden for payroll taxes, workers' compensation, insurance and benefits, and show the result as a loaded rate. The calculator below lets you test that build-up yourself: enter a base wage, a burden percentage, the share of hours worked at overtime, crew size and hours, and it returns the loaded rate, the blended rate with overtime, labor hours and crew labor cost. Overtime is priced at the premium you enter, so a compressed schedule shows up as a cost rather than a surprise.
Staffing comes from the CPM schedule, not from a percentage. If the schedule shows the project superintendent on site for 34 weeks at 45 hours, the line is 1,530 hours at the loaded rate for first-line construction supervisors. Permits are taken from the authority having jurisdiction's published fee schedule, and sales tax is applied only to material lines that your state taxes, at the rate for the delivery jurisdiction.
Bonds and insurance follow published rate tables. A payment and performance bond is quoted as a rate per $1,000 of contract value against the surety's tier, and builder's risk is carried at an annual rate applied to the contract duration. The chart below shows how the published price indexes move, which is why we refresh material-linked general conditions items instead of carrying last year's numbers forward.
When the estimate is done, the general conditions lines map straight onto AIA G703 continuations, which is where our schedule of values drafting service picks up. For the full project build-up around these costs, start with construction cost estimates or general contractor estimates.
To start, request a free quote and attach your drawings.
| Line item | Unit | Measurement rule | Illustrative arithmetic |
|---|---|---|---|
| Project superintendent | Hour | CPM weeks × 45 hr/wk × crew of 1 | 34 wk × 45 hr = 1,530 hr |
| Temporary power | Month | Service months per CPM, plus connection fee | 9 mo × monthly service rate + connection |
| Portable toilet | Month | Units × service months | 2 units × 9 mo = 18 unit-months |
| Dumpster (30 yd) | Pull | Pulls = estimated debris volume ÷ 30 yd | 1,200 yd³ ÷ 30 = 40 pulls |
| Small tools and consumables | % of trade labor | Applied to self-performed labor only | Stated % × trade labor dollars |
| Payment and performance bond | Per $1,000 | Contract value ÷ 1,000 × published rate | Rate tier set by surety |
| Sales tax | % of taxable material | Taxable material lines only, delivery jurisdiction rate | Stated % × taxable material |
Loaded labor rate calculator
- Loaded rate
- $31/hr
- Blended with overtime
- $32/hr
- Labor hours
- 320
- Crew labor cost
- $10,279
Burden covers payroll taxes, workers’ compensation, insurance and benefits; it varies by state, trade and company. Overtime is priced at time and a half.
Frequently Asked Questions
What are general conditions in construction?
General conditions in construction are the non-permanent, project-specific costs of running a job: supervision, temporary facilities and utilities, site security, small tools, insurance and bonds, permits, and final cleaning. They are priced as separate line items rather than buried in trade unit prices, so an owner can see what the site itself costs before any concrete, steel, or wire is installed.
What is the difference between general conditions and general requirements?
General requirements are the administrative section of the specification, CSI MasterFormat Division 01, covering submittals, RFIs, substitution procedures, closeout documents, and as-built drawings. General conditions are the priced cost items that deliver those requirements: the superintendent's hours, the field office, the dumpster, the portable toilet. One is a written obligation, the other is the money and labor that satisfies it.
What percentage of a construction project is general conditions?
There is no fixed percentage; the share depends on duration, site constraints, trade count, and whether the contractor self-performs. Short, simple, single-trade work trends toward a low single-digit share, while long-duration occupied-building renovations with security, hoisting, and temporary heat run much higher. We compute the share from the priced line items and report it against the Division 01 through 49 total rather than applying a rule of thumb.
Are general conditions the same as overhead?
No. General conditions are job-specific and traceable to a project, such as the superintendent assigned to that site or the crane rented for that structure. Home office overhead is company-wide and continues whether or not the job runs, and profit is a separate markup. Keeping the three apart is what makes general conditions vs overhead and profit comparable across bids.
How do you calculate general conditions in an estimate?
Build each item from a quantity and a rate: superintendent and laborer hours from the schedule, temporary power from the service size and months connected, dumpster pulls from the debris volume and haul frequency, insurance and bond from the contract value and rate. Add labor burden to wage-based lines and carry an allowance only where scope is genuinely undefined. The sum is the general conditions total.
Who pays for general conditions in a construction contract?
The owner pays for them, either as a lump sum line in the contract or as a unit-priced or time-and-material item when the duration is uncertain. On cost-plus work they are reimbursable at cost with an agreed fee. The contract form and the schedule of values determine how the cost is billed, not who ultimately bears it.
Can you use my estimate template?
Send the template along with the drawings and specifications, and we will confirm whether the estimate can be delivered in it before the quote is issued. If the template's structure cannot hold the line-item detail, we deliver the Excel workbook and PDF summary with marked-up drawing pages and note the mapping.
Do you sign NDAs before reviewing plans?
Clients can request a confidentiality agreement before sending drawings, and the terms are agreed before plan review begins. Send the request with the project description so the paperwork is settled before any documents are transferred.