What does a general contractor actually do?
A general contractor takes a project from plans to finished, permitted work and stays accountable for the whole thing. Rather than the homeowner trying to hire and coordinate a dozen separate trades, the GC acts as the hub: they price the work, schedule each phase, manage the people on site, and make sure what gets built matches the approved plans and code.
The role is part builder, part coordinator, and part administrator. On a typical remodel or addition, the contractor is fielding material deliveries, confirming an electrician shows up after the framing inspection passes, and keeping the project moving when one trade runs long. When something goes wrong, the GC is the one who owns the fix rather than the homeowner refereeing between subs.
- Estimating and bidding: turning plans or a scope into a written, itemized price
- Permits and inspections: filing applications and scheduling required city inspections (requirements vary by jurisdiction)
- Subcontractor management: hiring, scheduling, and supervising licensed trades like plumbing, electrical, and HVAC
- Procurement: ordering materials and managing lead times so work isn't stalled waiting on product
- Scheduling and sequencing: ordering the phases so each trade can do its part without rework
- Budget and change-order tracking: documenting what was agreed and what changes cost
- Quality control and closeout: punch-list completion, final inspections, and handing over a finished space
What is construction project management, and how is it different?
Construction project management is the planning-and-control side of building: managing scope, schedule, budget, and risk so a project lands on time and on budget. Every competent general contractor does project management as part of the job. On larger or more complex projects, it can also be a distinct service, where a construction or project manager oversees the process and the design team while the building itself is handled by one or more contractors.
For most homeowner-scale work, the two roles are bundled: you hire one general contractor who both builds and manages. The distinction matters mainly on bigger budgets, phased projects, or jobs where the owner wants independent oversight of cost and quality. Understanding the difference helps you ask the right question up front, namely whether you're buying a builder, a manager, or both.
- Scope management: defining exactly what is and isn't included, in writing, to limit disputes
- Schedule management: building a realistic timeline with milestones and dependencies between trades
- Budget management: tracking committed costs, allowances, and change orders against the contract
- Risk management: planning for the predictable surprises, such as hidden water damage or outdated wiring found during demolition
- Communication: keeping the owner, designer, inspectors, and trades aligned on status and decisions
What does a general contracting project typically cost, and how are fees structured?
General contractor pricing usually shows up in one of three structures, and the right one depends on how defined your scope is. The figures below are typical industry ranges meant for planning, not quotes; actual pricing in the Bay Area is driven by your specific scope, finishes, site conditions, and labor market, so always get a written estimate for your project.
Beyond the fee structure, remember that a contractor's price reflects the cost of materials, licensed-trade labor, permits, insurance, and overhead, not just the builder's time. A bid that comes in far below others isn't necessarily a deal; it may signal missing scope, a thin allowance for finishes, or assumptions that turn into change orders later. Comparing bids line by line matters more than comparing bottom-line numbers.
- Percentage of cost: a common full-service structure, often roughly 10%-20% of construction cost as the contractor's fee, varying with project size and complexity (estimate, not a quote)
- Cost-plus: the owner pays documented costs plus an agreed markup or management fee; offers transparency but a less fixed final number
- Fixed-price (lump sum): one set price for a fully defined scope; predictable, but change orders apply when the scope shifts
- Allowances: budget placeholders for items not yet selected (tile, fixtures), which can move the final cost up or down
- Permit and inspection fees: typically separate line items set by the local jurisdiction, not the contractor
How long does a general contracting project take?
Timelines depend heavily on scope, permitting, and material lead times, and Bay Area permitting can add meaningful calendar time before any construction starts. The ranges below are typical planning estimates, not guarantees; weather, inspection scheduling, change orders, and supply delays all move the schedule.
A useful way to think about it: the build phase is often the predictable part, while design decisions, permit review, and long-lead materials (custom cabinets, certain windows) are where projects most often slip. Front-loading those decisions and getting permits in motion early is the single biggest lever a homeowner has on the calendar.
- Small interior projects (a single room refresh, minor scope): often a few days to a few weeks once started
- Bathroom remodel: commonly several weeks of active construction, plus design and permitting time beforehand
- Kitchen remodel: frequently in the range of a couple of months of construction, longer with structural changes or custom cabinetry lead times
- Room additions and larger structural work: commonly several months, with permitting often adding weeks to months up front
- Permitting and plan review: timelines vary significantly by jurisdiction and project; verify current expectations with your local building department
When do you need a general contractor (and when can you skip one)?
You generally want a general contractor when a project spans multiple trades, requires permits, involves structural or system changes, or simply has too many moving parts to coordinate yourself. The value isn't only the building; it's having one accountable party who owns scheduling, code compliance, and the result. For multi-trade remodels and additions, that coordination is usually worth the fee.
Smaller, single-trade jobs may not need a GC. If you're replacing a faucet, painting a room, or doing a like-for-like repair within one trade, hiring that specialist directly is often simpler and cheaper. The gray area is mid-size work; if you find yourself trying to sequence a plumber, an electrician, and a tile installer around each other, that coordination burden is exactly what a general contractor is built to carry.
A note on permits and licensing: in California, work above a small dollar threshold generally must be performed by a licensed contractor, and many projects require permits regardless of who does the work. Always verify license status with the CSLB and confirm permit requirements with your local building department before work begins.
How do you choose and vet a general contractor in the Bay Area?
Vetting a contractor comes down to verifying credentials, comparing detailed bids, and getting everything in writing before any money changes hands. The goal is to confirm the person you're hiring is licensed, insured, and clear about scope, so you're comparing like for like and protected if something goes sideways.
Use the checklist below as a starting point, and adapt it to your project. The most important habits are simple: verify the license yourself rather than taking it on faith, never pay large sums far ahead of completed work, and insist that scope, schedule, payment milestones, and change-order process all live in a signed contract.
- Verify the license directly on the CSLB website using the contractor's license number, and confirm it's active and matches the business
- Confirm insurance, including general liability and, where applicable, workers' compensation; ask for current certificates
- Get multiple written, itemized bids so you can compare scope and allowances, not just bottom-line prices
- Read the contract carefully: scope, schedule, payment schedule tied to milestones, allowances, and the change-order process should all be spelled out
- Understand California's down-payment rules and avoid large upfront payments that outpace work completed (verify current law for specifics)
- Ask how permits and inspections will be handled and who pulls them
- Get references and ask about communication, schedule adherence, and how problems were handled
