What Does A General Contractor Do?

You have a project in mind, maybe a kitchen overhaul, a new deck, or a full-scale renovation. This calls for a professional, and when you ask around, one piece of advice keeps coming up: “Find a general contractor.”

So what exactly does a general contractor do, and do you really need one?

This guide breaks it all down, from their core responsibilities to the types of GCs out there. You’ll walk away knowing exactly what to expect and how to find the right fit for your project.

What Is a General Contractor?

A general contractor, or GC, is the professional who manages a construction or renovation project from beginning to end.

In practical terms, your GC is the main point of contact between you and every other person working on your build. They handle the big-picture coordination, including the budget, scheduling, permits, subcontractors, and quality control.

Companies like Tuck Home Services play this role for homeowners and property owners across Central New Hampshire. Whether it’s a major structural overhaul or a carefully planned renovation, the goal is a seamless process from concept to completion.

Key Responsibilities of a General Contractor

General contractors wear a lot of hats. Here’s a closer look at what they’re actually doing on your behalf throughout your project.

Project Planning and Management

Before a single nail is hammered, your GC does a tremendous amount of groundwork. They review architectural plans, develop timelines, map out the construction sequence, and coordinate all the logistics that keep a project moving forward.

Good planning at this stage is what separates a smooth build from a chaotic one. Investing in solid pre-construction services can save thousands down the line by catching problems before they become expensive mistakes.

Once work is underway, the GC shifts into full management mode. They oversee daily activity on-site, adapt the schedule when unexpected issues arise, and keep everything on track toward the agreed completion date.

Hiring and Managing Subcontractors

Most construction projects require a range of specialized trades. Your general contractor is responsible for identifying, vetting, hiring, and managing all of these subcontractors.

A GC’s subcontractor network is one of their most valuable assets. A good one will typically work with the same trusted subs repeatedly.

Your GC also coordinates the sequencing of these trades, making sure the plumber finishes before the drywall goes up, and that no two crews are tripping over each other.

Permits and Regulations

Construction projects require permits, and navigating the process is part of your general contractor’s job. They know which permits are required for your specific project, how to apply for them, and how to schedule the necessary inspections throughout the build.

This is especially important in New Hampshire, where local regulations and building codes must be followed carefully. Having a knowledgeable GC in your corner means you’re not left scrambling to understand requirements that could delay or derail your project.

Budgeting and Cost Management

One of the biggest stressors in any renovation is cost. A skilled general contractor helps you understand what your project will realistically cost. They can break down the expenses clearly and manage the budget throughout construction.

Expect a detailed quote that outlines material costs, labor, and overhead or profit. That transparency makes it much easier to compare bids and make informed decisions at every stage.

A good GC will also flag potential cost overruns early and present solutions, rather than letting small issues snowball into budget-busting surprises.

Site Supervision and Quality Control

Your general contractor is the person responsible for what happens on-site every day. They oversee the work and make sure it meets the agreed-upon standards. Plus, they make real-time decisions when issues arise.

Quality control is ongoing throughout the project, not just a final inspection at the end. Before wrapping up, the GC collects final paperwork and works through a punch list before final payments are made.

Types of General Contractor

Not all general contractors are the same. Depending on the scale and nature of your project, you’ll want to understand which type of GC is the right fit.

Commercial General Contractor

A commercial general contractor specializes in business and commercial construction. This could be office buildings, retail spaces, warehouses, and multi-unit residential developments.

These projects tend to be more complex, with stricter regulatory requirements and larger teams involved.

With a specialized service, you’ll get the same reliability and communication that residential clients count on, just scaled to the demands of commercial projects.

Residential General Contractor

A residential general contractor focuses on homes. This includes single-family properties, vacation homes, second homes, and short-term rentals. The scope of work can range from modest upgrades to complete gut renovations.

Specialty Contractors

Specialty contractors focus on specific trades or types of work rather than managing a full project.

Electricians, plumbers, roofers, and HVAC technicians are all specialty contractors. They typically work under the direction of a general contractor rather than holding the primary contract with the property owner.

It’s worth noting here that if you hire a specialty contractor directly, you take on some of the coordination responsibilities that a GC would otherwise handle.

Remodelling Contractors

Remodeling contractors specialize in renovation and improvement work on existing structures, as opposed to ground-up new construction.

This is a broad category that covers everything from kitchen and bathroom updates to full-scale home transformations. They cover both interior and exterior work, all tailored to your specific property and vision.

When Do You Need A General Contractor?

Not every home project requires a general contractor. A minor repair or a single-trade job, like having an electrician install a new outlet, can usually be handled directly. But as projects grow in scope and complexity, the value of a GC becomes clear.

You likely need a general contractor when:

Your project involves multiple trades or phases
You need permits and inspections
The work involves structural changes to your home
You don’t have the time or expertise to coordinate subcontractors yourself
You’re managing a large renovation on a property you don’t live near

That last point is particularly relevant for second homeowners and short-term rental property owners in Central NH. Managing a renovation remotely, without someone you trust on the ground, is stressful and risky. A reliable local GC is worth every penny in that situation.

Benefits of Hiring a General Contractor

So why hire a GC instead of managing the project yourself?

In fact, the benefits add up quickly:

Single point of accountability. When something goes wrong, you want one person responsible for making it right. With a GC, you’re not chasing down three different subcontractors to figure out who’s to blame for a leak or a measurement error.

Time savings. Coordinating a construction project is essentially a full-time job. A GC handles the scheduling, the calls, the on-site decisions, and the problem-solving.

Better subcontractor access. Established GCs have relationships with reliable tradespeople who are in demand. Flying solo, you may find yourself calling around trying to book electricians who are booked out for months.

Cost control. Interestingly, a good GC often saves you money. Their experience helps them spot design issues early, avoid costly mistakes, and negotiate better rates with subs and suppliers than you could on your own.

Peace of mind. With the right GC, you’ll get reliability, clear communication, professionalism, and responsiveness. Knowing your contractor will show up, do what they said, keep you informed, and do it right the first time is priceless.

General Contractor Vs Construction Manager

These two roles are often confused, but there are meaningful differences.

A general contractor holds the prime contract with you, the property owner. They take on the legal and financial responsibility for the work, including hiring subcontractors, managing the budget, and delivering the finished project.

A construction manager (CM), on the other hand, typically works as your advisor or agent rather than the primary responsible party. They help coordinate the project on your behalf, but subcontractors may hold separate contracts directly with you. This model is more common on large commercial or public projects.

For most residential and small commercial projects, a general contractor is the right choice. The GC model is simpler, more streamlined, and puts clear accountability in one place. You’ll know exactly who to call, and they’ll know the buck stops with them.

How to Choose the Right General Contractor

Choosing a GC is one of the most important decisions you’ll make for your project.

Here are the key factors to weigh:

Relevant experience. Look for a contractor who has completed projects similar to yours in both type and scale. A GC who excels at major home renovations will serve you better than one who primarily handles commercial builds, and vice versa.

Licensing and insurance. GCs should be properly licensed and carry general liability insurance. Don’t skip this step. Ask for documentation and verify it. A legitimate contractor will have no problem providing it.

Strong communication. Pay attention to how responsive a contractor is during your initial conversations. That’s a preview of what working with them will be like. You want someone who keeps you in the loop and answers your questions.

References and past work. Ask for references from projects similar to yours, and actually call them. Ask how well the contractor stuck to the timeline and budget, and whether they’d hire them again.

Detailed, transparent bids. A quality contractor will give you a clear cost breakdown, not just a single number. If a bid is unusually low, ask why. Cheap bids often mean corners will be cut.

Compatibility. You’ll be working closely with this person for weeks or months. Trust your gut. Professionalism, honesty, and a genuine interest in your project go a long way.

Common Misconceptions About General Contractors

There are a few persistent myths about GCs that are worth clearing up.

“A GC is just a middleman who marks up the work.” This one gets a lot of traction, but it misses the point.

Yes, a GC adds a percentage on top of subcontractor costs, but that covers their coordination, expertise, liability, insurance, and the countless hours of management that keep your project from going sideways.

The alternative, which is managing everything yourself, often costs more in time, mistakes, and stress than the GC’s fee ever would.

“Any handyman can do what a GC does.” A skilled handyman is great for smaller, self-contained tasks. But managing a multi-trade renovation is a fundamentally different job.

It requires licensing for certain work, a deep understanding of building codes, experience with permitting, and the ability to coordinate complex logistics across many workers and weeks.

“Getting the cheapest bid means saving money.” The lowest bid is often the most expensive option in the long run.

Low bids can reflect lower-quality materials, underqualified workers, or a contractor who underestimated the job and will come back asking for more. Value and price aren’t the same thing.

“General contractors only do big, new construction projects.” GCs handle a wide range of work, from full home builds to targeted renovations, deck construction, structural repairs, and beyond.

If you’re wondering whether your project is “big enough” for a GC, the better question is whether the complexity and coordination would benefit from having one professional overseeing the whole thing.

FAQs

What’s the difference between a general contractor and a subcontractor?

A general contractor holds the primary contract with you, the property owner, and is responsible for the entire project, including planning, budgeting, coordination, and delivery. A subcontractor is a specialist (electrician, plumber, roofer, etc.) hired by the GC to perform a specific scope of work. The GC manages the subcontractors; you manage the GC.

How much does a general contractor cost?

Most general contractors charge between 10% and 20% of the total project cost, though larger or more complex projects may run up to 25%. This fee covers their overhead, insurance, management time, and profit margin.

Do general contractors handle permits?

Yes. Pulling permits and scheduling inspections is a standard part of a general contractor’s job. They know which permits your project requires, how to apply for them, and how to coordinate the inspections that happen throughout construction.

Are general contractors licensed?

Licensing requirements vary by state. In New Hampshire, contractors performing certain types of work are required to hold appropriate licenses, and verifying a GC’s licensing status before hiring them is always a good idea.