Construction General Conditions: What GCs Charge For and Why

What General Conditions Are

In construction estimating and cost code accounting, "general conditions" refers to the project-level indirect costs a GC incurs to manage and support the construction process — costs that don't attach to any single trade or work result but are necessary to deliver the project as a whole.

The term has two related but distinct meanings that cause significant confusion:

1. General Conditions (Cost)

The budget line in a GC's estimate covering project-level indirect costs: supervision, temporary facilities, equipment, insurance, bonds, etc. This is what people mean when they say "the GC is charging 8% for general conditions."

2. General Conditions (Contract)

The contract document section (AIA A201, FAR Part 52, etc.) defining the legal rights and obligations of all parties — dispute resolution, changes, payment terms, risk allocation. This is a contract term, not a cost line item.

This guide covers the cost meaning — what's in the GC's general conditions estimate line. The contract document meaning is covered separately in construction contract types.

General Conditions vs. General Overhead vs. Profit

The three-layer fee structure on a construction bid confuses owners and subs alike. Here's how they stack:

Layer	What's Included	Typical Range	Key Characteristic
Direct Costs	Labor, material, equipment, subcontracts for permanent work	70–85% of contract	Tied directly to scope of work
General Conditions	Project-level indirect costs (see full list below)	5–15% of direct costs	Project-specific; scales with duration and complexity
General Overhead	Home office: executive salaries, rent, accounting, IT, marketing	2–6% of project cost	Company-level cost allocated to projects
Profit / Fee	Return on risk, capital, and management	2–8% depending on market	Negotiated; reflects competition and risk

The distinction between general conditions and general overhead matters on cost-plus contracts with fee caps and on public projects with auditable cost submissions. On a lump sum bid, all three layers collapse into the total price — the owner sees only the number, not the components.

On GMP and cost-plus projects, owners often negotiate general conditions as a "not-to-exceed" budget item billed at actual cost, while general overhead and profit are fixed percentages. This creates an incentive for GCs to shift home office costs into the project-level GC budget — a practice owners should audit.

What's Actually in the General Conditions Budget

The general conditions budget covers every project-level cost that supports the work without becoming part of the permanent structure. Here's the standard breakdown:

1. Project Supervision and Management

Often the single largest GC cost category — 40–60% of the total GC budget on most projects.

Project manager (PM) — salary + burden, often allocated as a percentage of time
Superintendent(s) — full-time on-site; larger projects have assistant supers
Project engineer (PE) / assistant PM
Safety manager / safety officer (full-time on projects over $5M in most markets)
Quality control manager (required on federal and some public projects)
Document control / office engineer
Project accountant (on large GMP/cost-plus projects)

2. Temporary Facilities and Infrastructure

Job site trailers (purchase, lease, or rental) — PM office, super's office, plan room, break room
Temporary power: utility company service installation + distribution panels on site
Temporary water: domestic water for construction use + worker facilities
Temporary heating and cooling (winter enclosures, summer cooling for concrete curing)
Sanitary facilities: portable toilets + hand-wash stations (OSHA ratio: 1 per 20 workers)
Temporary fencing, hoarding, and site security
Temporary roads, parking, and haul routes
Signage: project identification, safety signs, OSHA-required postings

3. Construction Equipment and Temporary Works

Tower cranes (rental + installation + operator + maintenance)
Personnel hoists / construction elevators on multi-story projects
Forklifts and telehandlers for material handling
Compressors, generators, and pumping equipment
Scaffolding systems (owned or rented; erection/dismantling cost separate)
Shoring and forming systems not included in trade contracts
Small tools and consumables (typically 1–2% of direct labor)

4. Insurance and Bonds

Builder's risk insurance (property insurance on the structure under construction)
Performance bond and payment bond (typically 1–3% of contract value combined)
Project-specific wrap-up insurance (OCIP/CCIP, if required by owner or GC)
Professional liability (design-assist projects)

Note: General liability and workers' compensation are typically in the general overhead / labor burden rate, not in GC — though practices vary by company.

5. Permits, Testing, and Inspections

Building permit fees (can be substantial on large urban projects — 0.5–1.5% of construction cost)
Special inspections: structural steel, concrete, masonry, soils, fireproofing
Testing and commissioning: HVAC balancing, fire alarm, plumbing pressure tests
Survey and layout: as-built survey, property line confirmation, benchmark establishment
Environmental monitoring (dust, noise, vibration) on urban or sensitive sites

6. Project Technology and Administration

Construction management software (Procore, Autodesk Build, Sage) — project license fees
BIM coordination and model management (Revit, Navisworks, BIM 360)
Drone surveys and photographic documentation
Job site internet, phone, and communication systems
Printing, reproduction, and document distribution
Office supplies, postage, and courier services

7. Project Closeout Costs

Punch list management and final inspections
As-built drawing compilation and O&M manual assembly
Commissioning support and training
Temporary facility removal and site cleanup
Certificate of occupancy coordination

How to Price General Conditions

General conditions should be priced from a detailed bottom-up estimate — not as a blanket percentage of direct costs. A percentage approach misses the project-specific drivers that make GC costs vary by 3× across projects of similar dollar value:

Factors That Drive GC Cost Up

• Long project duration (supervision cost × months)
• Urban/constrained site (hoisting, staging, logistics premium)
• Multiple-shift operation (supervision doubles)
• High-rise or complex structure (tower crane + hoist costs)

• Owner-required safety plan or safety staffing ratios
• Heavy permit fee jurisdiction
• Special inspections on structural systems
• Design-assist scope requiring professional liability

The correct approach is to build a time-phased general conditions budget: estimate the quantity of each resource (superintendent months, trailer months, crane months) and multiply by unit cost. This produces an auditable, defensible GC budget that holds up on GMP and cost-plus projects.

On lump sum bids, experienced GCs often use historical GC cost data from closed projects as a sanity check against the bottom-up number — not as a substitute for it. A $25M office project should run in a known GC range; if the bottom-up comes in 40% above that, something is double-counted.

How Owners Evaluate GC Cost Reasonableness

On GMP and construction management contracts where the GC submits a detailed GC budget, owners and their representatives use several evaluation frameworks:

1

GC-as-a-Percentage Benchmarking

Most owner's reps maintain GC cost benchmarks by project type: commercial office (6–10%), healthcare (10–15%), multi-family (5–8%), industrial (4–7%). A submission significantly outside the benchmark triggers a line-item review, not automatic rejection.
2

Staffing Plan Review

Owners review the supervision staffing plan — project org chart, key personnel assignments, and percentage-of-time allocations. The superintendent's experience and tenure are evaluated separately from cost. "We're charging for a $160K/year superintendent" is auditable; "we're charging 8% for management" is not.
3

Duration Sensitivity

On GMP contracts, owners ask: "What happens to GC cost if the schedule extends 2 months?" GCs should be able to answer with a monthly GC burn rate (typically $80–250K/month on commercial projects, depending on size and staffing). This number also informs liquidated damages negotiations.
4

Home Office vs. Project Cost Audit

On federal and public projects, auditors specifically check for home office costs misclassified as project GC: executive travel charged to the project, home office IT and software billed as project technology, accounting and legal overhead in the GC line. The Modified Total Cost Method is the standard audit approach.

Five GC Cost Control Best Practices

1. Build a Time-Phased GC Schedule

Map every GC resource to the project schedule — when each superintendent, each piece of temporary equipment, and each temporary facility is needed. A crane that's on site 4 months longer than planned is a $200K+ overrun. Visualizing GC spend against the CPM schedule reveals these risks early.

2. Treat GC as a Job Cost Category, Not a Percentage

Code every GC expense to a specific cost code (Division 01). Track GC actual vs GC budget weekly in the job cost report. GC overruns are just as destructive to project margin as trade cost overruns — and they often arrive faster because supervision and equipment costs are fixed regardless of site productivity.

3. Demobilize Resources on Schedule

The single biggest GC cost driver is duration. Every month a superintendent and trailer stay on site beyond the planned substantial completion date costs money. Pressure for early closeout isn't just about owner satisfaction — it's margin protection. Track the GC monthly burn rate against schedule progress.

4. Recover Extended GC in Change Orders

When owner changes or unforeseen conditions extend the schedule, the GC is entitled to recover extended general conditions costs — additional superintendent months, extended crane rental, extended trailer costs — as part of any change order that impacts the project's critical path. Document the monthly GC burn rate at project start to make this calculation straightforward.

5. Separate Bonds and Insurance from GC in Negotiations

Bonds and insurance are largely pass-through costs with market-determined rates — there's little a GC can do to reduce them on a given project. When owners push to reduce GC costs, focus the negotiation on controllable items (staffing ratios, equipment choices, trailer footprint) rather than lumping everything together. Mixing pass-through costs with controllable costs makes negotiation unproductive.

How Plan Quality Affects General Conditions Cost

General conditions cost is fundamentally a function of project duration and complexity. Projects with incomplete or conflicted drawings — where the superintendent spends weeks resolving RFIs, coordinating re-work, and managing subcontractor disputes — run longer and burn more GC budget than projects with clean, coordinated documents.

The hidden cost of a poorly coordinated plan set isn't just in the RFI count or the change order volume — it's in the superintendent's time and the extended equipment and facility costs that accumulate week after week while issues are resolved in the field.

SheetIntel's AI plan review identifies coordination conflicts, scope gaps, and specification ambiguities before construction begins. Fewer field surprises mean fewer schedule disruptions — and a GC budget that stays closer to the original estimate.

Key Takeaways

→General conditions (cost) covers project-level indirect expenses — not profit, not home office overhead, not trade work.
→The three-layer fee structure is Direct Costs → General Conditions (5–15%) → General Overhead (2–6%) → Profit (2–8%).
→Supervision is typically 40–60% of the GC budget — the superintendent's time is the core cost driver.
→GC cost scales with duration: know the monthly GC burn rate to price schedule risk and recover extended GC in change orders.
→On GMP/cost-plus, build a time-phased bottom-up GC budget — a percentage assumption is indefensible under audit.
→Plan quality directly affects GC cost — coordination conflicts and RFIs extend duration and burn supervisor time.