What Is a General Contractor? Role, Cost, and How to Hire One

A general contractor is the person or company responsible for running a construction or renovation project from start to finish. They pull permits, hire and schedule subcontractors, order materials, manage the budget, and act as the single point of contact between the property owner and everyone doing the work.

If you are planning a renovation or a new build, the general contractor is usually who turns drawings and decisions into a finished project. Homeowners hire one to handle the parts of a job that get complicated fast: permits, multiple trades working in sequence, inspections, and a budget that has to hold across weeks or months of work.

Important takeaways about general contractors

What does a general contractor do?

A general contractor, often shortened to GC, runs the day-to-day work on site and manages everyone involved in the build. On most residential projects, the work falls into a few areas:

• Permits and inspections. The GC pulls the building permits the project requires and schedules the city or county inspections that have to pass before work can continue.
• Hiring and scheduling subcontractors. Specialized trades like electricians, plumbers, and HVAC techs usually work under the GC. The GC lines them up in the right order so one trade isn't sitting idle waiting on another, and a good GC vets each sub, confirming they're licensed and insured for the work.
• Materials and ordering. The GC orders materials, tracks deliveries, and manages the lead times that can stall a job if no one is watching them.
• Budget and payments. The GC prices the work, pays the subs and suppliers, and keeps the project inside the agreed number.
• Code compliance and quality. The GC is responsible for the work meeting local building code and the standard set in the contract. If something fails inspection or turns up defective, fixing it falls to the GC rather than to you.

For the homeowner, that means one person owns the whole job, from the first permit to the final walkthrough.

General contractor vs. the roles people confuse it with

A few roles get confused with the general contractor's.

Do you need a general contractor, or can you manage it yourself?

In most places you can legally act as your own general contractor on your own home. This is called being an owner-builder, and it means you take on the GC's job: pulling permits in your name, hiring and scheduling every trade, ordering materials, and standing behind the work.

Acting as your own GC saves the contractor's fee, which is real money on a big project. It also hands you all the work that the fee was paying someone else to do.

As an owner-builder you carry the risks a general contractor normally absorbs:

• Permits are pulled in your name. Any code violations and failed inspections become your problem to resolve.
• You schedule the trades. If the tile setter shows up before the plumber finishes, the delay and the cost land on you.
• You handle liens. If you pay a subcontractor and they don't pay their supplier, the supplier can place a lien on your house (covered below).
• Many lenders won't finance an owner-builder project, or they hold back funds until inspections pass.

Acting as your own GC tends to make sense on a single-trade job with no structural work and no permit, like swapping out cabinets or replacing the flooring in one room. Once a project crosses into multiple trades, permits, or anything structural, the coordination and liability are usually worth paying a contractor to carry.

A middle option is hiring a construction manager, who coordinates the project for a fee while you still hold the contracts. That gives you oversight without the full owner-builder workload. To dig deeper, read our guide about the pros and cons of hiring a general contractor.

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What a general contractor charges, and how to read a bid

General contractors usually charge a fee of roughly 10% to 20% of the total project cost, with smaller jobs sometimes billed at an hourly rate of about $50 to $150. The percentage covers the GC's overhead and profit on top of the actual cost of labor and materials.

A bid breaks down into line items, and those tell you more than the bottom-line total. Here is a simplified bid for a $48,000 kitchen remodel:

A few things worth knowing when you read one of these:

• The contractor fee line is not the GC's only margin. Many contractors also build a markup into the labor and material prices, so the visible fee understates what the project earns them. This is standard practice, and it means you can't compare bids on the fee line alone, since two contractors might hide very different markups in their labor and material rates.
• Allowances are estimates. If you choose a $9,000 countertop against a $4,000 allowance, your total goes up. Check what the allowances assume before you sign.
• Check for a contingency line. A bid without one usually means the surprises get billed back to you as change orders later.

Two pricing structures sit underneath all of this. A fixed-price (or lump-sum) contract locks in one number, and the GC absorbs any overruns. A cost-plus contract has you pay the actual cost of the work plus a set percentage, which can come in lower if the job goes smoothly but has no ceiling if it doesn't.

How you're protected: contracts, payments, and liens

Your protection on a project comes from the contract and the payment schedule.

• Put the scope in writing and read it closely. A solid contract spells out the scope of work, total price, payment schedule, timeline, and how change orders are handled. Most disputes trace back to work someone assumed was included that the contract never named.
• Tie payments to progress. A common structure is a deposit to start, often around 10%, followed by draws released as defined milestones are completed. Many states cap how much a contractor can ask for up front.
• Hold the final payment until the punch list is done. Keeping the last payment in reserve gives you leverage to get the final details right.
• Protect yourself against liens. If a subcontractor or supplier isn't paid, they can file a mechanic's lien against your home even if you already paid the general contractor in full, which can leave you paying twice. Collect a lien waiver, a signed document confirming payment, with each draw and especially the final one.
• Get a certificate of insurance up front. Confirm in writing that the GC carries general liability and workers' compensation coverage before work begins.

Licensing and insurance

Licensing rules vary by state. Some states license general contractors at the state level, some leave it to the city or county, and a few don't require a license for residential work at all. Check your state's licensing board or your local building department to confirm what's required and to verify that a contractor's license is active. At a minimum, confirm the GC carries general liability insurance and workers' compensation, and get the certificate of insurance in writing.

How to hire a general contractor

When you're hiring, a few steps are worth doing every time:

• Get at least three bids. Make sure each contractor is pricing the same scope of work so you are comparing like for like.
• Check references and recent work. Ask for projects similar to yours and call those homeowners.
• Verify the license and insurance before you sign, not after.
• Watch for red flags. A large upfront deposit, pressure to skip permits, a quote far below the others, or reluctance to put things in writing are all reasons to slow down.
• Get everything in the contract: scope, price, schedule, payment terms, and the change-order process, in writing, before work starts.

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General Contractor Glossary: Terms to Know

Why Collaborate With Block Renovation

Hiring a general contractor on your own means doing all the vetting, bid comparison, and payment oversight yourself. Block handles the parts of that process where homeowners most often get tripped up.

• Contractor matches built around your scope. Block pairs you with vetted contractors who specialize in your type of project, whether that's a kitchen, bathroom, basement, or multi-room remodel, with visibility into their reviews, past work, and relevant experience before you commit.
• Proposals you can actually compare. Every proposal comes with clear inclusions, allowances, and cost breakdowns, so you can weigh bids on the same terms instead of guessing what each one leaves out.
• Expert and AI scope review. Renovation experts and AI tools review your scope to catch gaps and red flags early, which cuts down on the surprise change orders that inflate a budget mid-project.
• Payments tied to progress. You pay through Block's secure system as work is completed, so money goes out against finished milestones rather than ahead of them.
• Warranty and price protections. Every contractor in the network backs their work with a warranty of at least one year, and Block Protections add price assurances and support if a conflict comes up.

Start by planning your project with Block's free tools, or see how Block matches you with contractors.

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