Worth It to Hire General Contractors: Pros and Cons

A general contractor's markup on a remodel usually lands at 30-45%. On a $60,000 kitchen, that's roughly $18,000-$27,000 sitting in one line item, with no tile, no cabinets, and no labor attached to it. Almost every homeowner who sees that number wonders whether they could pocket it by running the job themselves.

Reasonable question. But the markup isn't the real decision, and starting there sends you down the wrong path. The pros and cons of hiring a general contractor come down to one thing: who carries the risk when a renovation does what most renovations do, which is cost more and run longer than the plan promised.

What you're actually paying a general contractor for

A general contractor doesn't pour your slab or pull your wire. They sequence the people who do, and that sequencing is most of the job. Coordination and accountability are the bulk of what you're paying for, even if neither shows up as a line on the invoice.

• A general contractor is the single point of accountability on a job with many trades. When the tile sets late and the plumber is already booked across town, one person owns the problem of getting everyone back in the right order.
• They bring a bench of subcontractors they've worked with before. That existing relationship is why a contractor can often get a plumber on site Tuesday when a homeowner calling cold waits three weeks. Trades also price a familiar contractor's job more sharply than a stranger's, because repeat work is worth more to them than a one-off.
• They own the schedule from demolition to final walkthrough. Demo has to clear before rough-in, rough-in has to pass inspection before anything gets closed up, and someone has to hold that order across five or six trades so the site never stalls waiting on the wrong step.
• They absorb the problem when a trade falls through mid-job. A sub who quits or no-shows is the contractor's emergency to solve, with their bench and their relationships, not yours to scramble through on the fly.
• They carry the licensing, insurance, and code exposure. If an inspector fails the rough electrical, fixing and re-inspecting it is the contractor's problem, not a surprise you uncover after the drywall's up. Their liability and workers' comp coverage also stands between you and a claim if someone gets hurt on your property.

Why hire a general contractor

The markup is the price of transferring risk

Renovations rarely finish where they started. Depending on the survey, 70-78% of remodels run over budget, and change orders alone typically add 15-25% to the final number. The Houzz & Home study found only about a third of homeowners hit their budget and nearly a third went over.

The baseline rule of thumb in construction is the National Association of Home Builders' "10 and 10," roughly 10% overhead and 10% profit for about a 20% markup. Remodelers price above that, with net margins closer to 10-18%, because a remodel hides more unknowns than a new build. The premium isn't greed. It's the cost of those unknowns.

Cutting a contractor's 30-45% margin feels like the obvious win, right up until the first surprise behind a wall. Negotiate the margin down and you've shaved the smaller, visible number while keeping the larger, hidden one. That margin is mostly what you pay for someone whose job, and whose one-year workmanship warranty, is to absorb the volatility a renovation almost always produces.

Benefits of hiring a general contractor

• You get one point of contact for the entire renovation. Instead of juggling six schedules and six invoices, you manage one relationship.
• You inherit trades vetted by someone with skin in the game. A contractor's reputation rides on the subs they bring, which gives them a reason to drop the unreliable ones. A homeowner hiring a plumber cold has a single review page to go on. A contractor has watched that same plumber's work pass or fail inspection across a dozen jobs, which is a much harder thing to fake.
• You move the overrun risk onto the person best positioned to manage it. A good contractor prices contingency into the job and eats the cost of their own sequencing mistakes.
• You usually satisfy your lender and your permit office without extra effort. Most financing and most municipalities expect a licensed contractor, so hiring one clears that hurdle quietly.

The benefits of hiring a GC for a remodel concentrate in the projects where a lot has to happen in a particular order. A kitchen with five trades and a tight sequence leans on that coordination far more than a single-trade floor swap does.

Cons of hiring a general contractor

Being your own general contractor is a second job, not a discount

The savings look clean on paper. Skip the contractor on a $50,000 bathroom and you keep something like $7,500-$10,000, the rough value of the markup. The honest math comes after that.

Acting as your own general contractor means taking on the contractor's actual workload, unpaid and on top of your day job:

• Vetting and scheduling every trade, then keeping them in the right sequence when one runs late.
• Pulling permits and sitting through inspections, which is your name on the paperwork now.
• Chasing material deliveries and refereeing disputes when one sub blames another for a delay.

Even a single bathroom can swallow well over a hundred hours of this across two or three months. You have no warranty when a trade's work fails and no leverage when one stops returning your calls. Divide the savings by the hours and you've hired yourself at a wage you'd reject from anyone else, while still holding the overrun risk a contractor would have carried for you.

Owner-managers also forget they have to fund their own contingency, the 10-20% reserve every renovation needs for hidden plumbing, outdated wiring, and the repairs that surface only after demolition. That reserve usually gets spent, and when it does, the discount you were chasing shrinks fast.

None of this means the owner route never works. It works for people with real construction experience and a calendar to match, not for people who simply resent the markup.

Disadvantages of hiring a general contractor at a glance

• The markup is money you could keep on a genuinely simple job. A single-trade task like swapping a vanity or replacing a water heater has nothing to coordinate, so a contractor mostly adds margin on top of a sub you could hire directly. The savings only hold when the job really is one trade, which is rarer than it looks once you account for the plumbing or electrical hiding behind it.
• Your vision passes through a filter before it reaches the trades. Anything you don't put in writing gets interpreted by someone else, and their version may not match the one in your head.
• The quality of your renovation is only as good as the subs the contractor brings. Two contractors can quote the identical price and deliver completely different work, depending on who they put behind the drywall.

Multi-trade contractor vs hiring separately: the cost math

The single-trade exception is worth a closer look, because it's where the multi-trade contractor vs hiring separately cost question actually gets decided. Specialty trades carry their own 20-35% markup, so going direct never makes the work free. What it removes is the second layer of margin, the general contractor's cut, which buys you nothing when there's nothing to manage.

The trap is mistaking "one room" for "one trade." A bathroom looks small, but it pulls in plumbing, electrical, tile, and often framing, so it fails the single-trade test even at a modest budget. Hiring separately saves money when the work genuinely lives inside one trade. The moment a second trade has to follow the first in a specific order, you're paying for coordination one way or another, either in a contractor's markup or in your own hours.

The question that tells you the most about a contractor

That last con is the soft spot in the whole arrangement. When you hire a general contractor, you're trusting their subcontractors largely on faith, because you rarely meet the people who'll actually rough in your plumbing. We asked Steven Morgan, Head of Technical Training and Development at 24HR Supply and a master plumber and certified HVAC technician, what homeowners get wrong here.

"Ask them to provide the names and license numbers of the specific plumbers and electricians who will actually be on your job, and tell them you're going to verify," Morgan says. "Most homeowners ask whether the general contractor is licensed and stop there. They never vet the subs." He's been called in to fix additions where a contractor hired an unlicensed handyman to rough in the plumbing, and the work was bad enough that finished walls had to come down to correct it.

The point, in his words: "The question isn't 'are you licensed?' It's 'who exactly is doing my plumbing, can I see their license, and have they worked with you before?' That single question tells you more about a contractor than anything else you could ask." A homeowner who asks it, and actually runs the verification, has done more to protect the job than any amount of price haggling.

Renovate with confidence every step of the way

Step 1: Personalize Your Renovation Plan

Step 2: Receive Quotes from Trusted Contractors

Step 3: Let Us Handle the Project Details

Get Started

Why three bids can look nothing alike

Three bids on the same bathroom can land at $40,000, $58,000, and $75,000. Hand three contractors a scope that just says "retile the shower" and watch what each one does with it. The first prices are builder-grade ceramic and a day of labor. The second assumes the niche, the curb, and the waterproofing membrane you mentioned once on a walkthrough. The third got burned by a rotten subfloor behind old tile on his last job and quietly pads for it.

So the wider the spread, the more your scope is left open. Each contractor is filling the blanks with their own read on materials, finishes, and what counts as included, and the number swings on assumptions you never pinned down. Design errors and inadequate scope in the original estimate rank among the most cited reasons projects blow past budget, which is why the fix lives in the paperwork, not in collecting a fourth quote.

A detailed, expert-reviewed scope earns its keep here. Block Renovation has each homeowner's scope reviewed for missing line items and red flags before bids go out, so contractors price the same work and the numbers actually mean something. Once the scope is tight enough, the quotes start to converge, because everyone is finally pricing the same project.

Reading a set of bids

• Compare scopes line by line instead of comparing bottom lines. The lowest total often hides the most omissions.
• Look for what a bid leaves out, not just what it prices. Missing items tend to reappear later as change orders at 15-25% of the job. A low bid that skips demolition disposal, permit fees, or the electrical panel upgrade isn't cheaper, it just defers the cost to a moment when you have no leverage to negotiate it.
• Treat an unusually low number as a question, not a deal. A contractor who underbid either misread the work or plans to make it up in extras.

Sometimes the choice is already made for you

Before you weigh preference against price, check whether the question is even yours to answer. Construction loans and most renovation loans require a licensed contractor, and the bank usually wants proof of insurance before any funds release. Permits for structural, electrical, and plumbing work often have to be pulled and signed off by a licensed party, depending on where you live. And unpermitted, owner-managed work can complicate an insurance claim later and has to be disclosed when you sell, which buyers and their inspectors notice. On a lot of projects, your lender, your city, or your insurer has already decided for you.

Hiring a general contractor through Block

Most of what makes a general contractor worth it, the coordination, the vetted trades, the risk they absorb, is also where it goes wrong when the contractor turns out to be the wrong one. Block Renovation is built around that gap.

• Your area's best contractors compete for the project. You tell Block the details once and receive fast, comparable quotes from contractors who've already cleared vetting, references, and past-project review. Competing for the work also keeps their numbers honest in a way a single solicited bid rarely does.
• Every scope gets an expert and AI-assisted review before bids go out. That catches missing line items and red flags early, which is what keeps three quotes from turning into three different projects and holds change orders down once work starts.
• Payments release in stages as the work gets done. You pay Block, and Block releases funds to the contractor against approved milestones, so the contractor stays motivated to stay on schedule and you're never paying ahead of the work. If a change order comes up mid-project, you can ask Block to weigh in before you commit to it.
• A one-year workmanship warranty backs every contractor in the network. If something surfaces after the final walkthrough, Block responds to review requests within one business day.

Remodel with confidence through Block

Connect to vetted local contractors

We only work with top-tier, thoroughly vetted contractors

Get expert guidance

Our project planners offer expert advice, scope review, and ongoing support as needed

Enjoy peace of mind throughout your renovation

Secure payment system puts you in control and protects your remodel

Get Started