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By Renovation Guide HQ · Updated November 4, 2026
Updated: November 2026
Quick Answer
Hiring the right contractor comes down to three checks before you sign anything: a current license and active insurance, verified by you, three itemized bids on the same written scope, and a contract with a milestone payment schedule. That vetting takes about two to four weeks for a typical remodel.
This guide is part of our Budget and Planning cluster, the planning hub for every project on this site. Start with The Home Renovation Budget Planner to set your ceiling, then use this guide to hire the person who will spend it. For room-specific hiring advice, see How to Hire a Bathroom Contractor, and for kitchen pricing, see How Much Does a Kitchen Remodel Cost in 2026?
Cost Table: Contractor Jobs by Size, With Timelines
| Job Size | Low | Average | High | Per Sq Ft | Labor vs. Materials | Timeline |
|---|---|---|---|---|---|---|
| Small repair or single trade job | $500 (planning estimate) | $2,500 (planning estimate) | $7,500 (planning estimate) | Not priced per sq ft (planning estimate) | About 60 percent labor, 40 percent materials (planning estimate) | 1 day to 1 week (planning estimate) |
| Single-room remodel | $10,000 (planning estimate) | $25,000 (planning estimate) | $50,000 (planning estimate) | $100 to $250 (planning estimate) | About 50 percent labor, 50 percent materials (planning estimate) | 3 to 8 weeks (planning estimate) |
| Multi-room remodel | $30,000 (planning estimate) | $52,146 | $120,000 (planning estimate) | $30 to $60 (planning estimate) | About 55 percent labor, 45 percent materials (planning estimate) | 6 weeks to 4 months (planning estimate) |
| Whole-home renovation | $100,000 (planning estimate) | $150,000 (planning estimate) | $300,000 or more (planning estimate) | $60 to $150 or more (planning estimate) | About 60 percent labor, 40 percent materials (planning estimate) | 4 to 9 months (planning estimate) |
The national average figure in the table comes from Angi, which reports $52,146 as the national average renovation cost, with most projects landing between $19,468 and $88,348. Vetting itself costs little: license lookups and insurance checks are free, and most contractors give free estimates. What vetting costs is time, roughly 10 to 15 hours spread over two to four weeks, and that time is the cheapest insurance on the whole project.
Worked Example: Comparing Three Bids for a $48,000 Bathroom Remodel
Imagine three licensed contractors bid on the same written scope: a full bathroom remodel with a new shower, vanity, toilet, tile floor, and paint, with no layout changes. Here is how the bids might come back, and how to read them.
| Line Item | Bid A | Bid B | Bid C |
|---|---|---|---|
| Labor | $18,000 (planning estimate) | $19,500 (planning estimate) | $24,000 (planning estimate) |
| Materials and fixtures | $16,000 (planning estimate) | $17,000 (planning estimate) | $18,500 (planning estimate) |
| Tile and waterproofing | $5,500 (planning estimate) | $5,000 (planning estimate) | $5,300 (planning estimate) |
| Permits and disposal | $1,500 (planning estimate) | $1,500 (planning estimate) | $1,500 (planning estimate) |
| Contingency allowance in bid | $5,500 (planning estimate) | $5,000 (planning estimate) | $3,000 (planning estimate) |
| Total bid | $46,500 (planning estimate) | $48,000 (planning estimate) | $52,300 (planning estimate) |
The math checks out: Bid A totals $18,000 plus $16,000 plus $5,500 plus $1,500 plus $5,500, which is $46,500. Bid B totals $19,500 plus $17,000 plus $5,000 plus $1,500 plus $5,000, which is $48,000. Bid C totals $24,000 plus $18,500 plus $5,300 plus $1,500 plus $3,000, which is $52,300. Bid A is cheapest, but its labor line is the lowest and its contingency is the highest, which suggests it may be padding the allowance to look cheap on labor. Bid C is the most expensive and carries the smallest contingency, which leaves little room for surprises. Bid B sits in the middle on nearly every line, which is often, though not always, the sign of a contractor who priced the real job. Never pick on the total alone. Compare line by line, then ask each bidder to explain the biggest gap on any single line.
Now the payment schedule for the $48,000 winning bid. A milestone schedule protects both sides: 10 percent at signing is $4,800; 30 percent at demo and rough-in complete is $14,400; 30 percent at tile and fixtures installed is $14,400; 20 percent at substantial completion is $9,600; and the final 10 percent at final walkthrough and sign-off is $4,800. Those five payments add up: $4,800 plus $14,400 plus $14,400 plus $9,600 plus $4,800 equals $48,000. Hold the final 10 percent until every item on the punch list is done, not just most of them.
What $5,000, $25,000, and $100,000 Jobs Actually Buy in Contractor Terms
$5,000 buys a single-trade job or a small repair: a handyman or specialty contractor, one to three days on site, usually one or two workers, and a simple written agreement rather than a full contract package. Vetting still matters, but the checklist is shorter: license where required, insurance, and two recent references.
$25,000 buys a single-room remodel with a general contractor who manages the trades, pulls permits, and schedules inspections. Expect a full written contract, a milestone payment schedule, and a dedicated point of contact. This is the level where skipping vetting starts to get expensive.
$100,000 buys a multi-room or whole-home project with a general contractor, possibly a designer or architect, subcontractors across several trades, and a schedule measured in months. At this level, vetting should include a site visit to a past project, a call to the contractor’s bank or supplier references if the contract allows it, and a lawyer’s review of the contract before signing.
Regional Differences
The figures below are illustrative planning estimates, not quotes. Contractor pricing follows local labor rates, so the same scope costs more where trades charge more. Expect the highest totals in the Northeast and on the West Coast, where a mid-range job can run 20 to 40 percent above the national average. The Midwest tracks close to the average. The South and rural markets often run 10 to 20 percent below it. Licensing rules also vary by state: some states license general contractors statewide, others leave licensing to cities and counties, and a few require only registration. Deposit caps vary too. California, for example, caps the down payment on a home improvement project at 10 percent of the contract price or $1,000, whichever is less, and requires a $25,000 contractor license bond. Your state may differ, so check your state or local consumer protection agency before you sign, as the Federal Trade Commission’s hiring guide advises.
7 Cost Factors With Dollar Impact
1. Hiring unlicensed to save money. An unlicensed bid may come in 20 to 30 percent lower (planning estimate), but if work fails inspection or a worker is injured, you can be liable for costs that dwarf the saving. The discount is not a saving, it is a risk transfer to you.
2. Vague scope. A one-page estimate with no line items hides $2,000 to $10,000 in later change orders (planning estimate). An itemized bid costs nothing extra to request and prevents most of that gap.
3. Allowances set too low. If the bid allows $800 for a vanity and you pick a $2,000 one, you pay the $1,200 difference. Low allowances are the most common way a low bid becomes an expensive job. Price your actual selections before signing.
4. Permit and inspection fees. Budget $500 to $2,000 for a single-room remodel and $2,000 to $5,000 for multi-room or structural work (planning estimates). A contractor who offers to skip permits is offering to create a resale and insurance problem.
5. Change orders. Changes priced mid-project cost 20 to 50 percent more than the same change priced before work starts (planning estimate), because work gets undone and rescheduled. Freeze the scope in writing before demo day.
6. Schedule overruns. A crew delayed by late materials or poor scheduling can add $500 to $3,000 in temporary living, storage, and extended rental costs (planning estimate). A contract with a completion date and a delay clause keeps this visible.
7. No warranty in writing. A contractor who will not put a one-year workmanship warranty in writing is telling you who pays for callbacks: you do. Rework on a failed tile or plumbing job can cost $1,000 to $5,000 (planning estimate).
DIY vs. Pro: The Hiring Work Itself
| Task | Skill 1 to 5 | Tools Needed | Time | DIY Savings | Legal and Permit Limits |
|---|---|---|---|---|---|
| Writing the project scope sheet | 2 | Measuring tape, photos, written selections list | 2 to 4 hours | None directly, but prevents thousands in change orders | None |
| Checking licenses and insurance | 1 | State licensing board website, phone | 30 minutes per contractor | Free, and avoids liability that can run to five figures | None |
| Calling references and visiting past work | 1 | Phone, list of questions, car | 2 to 4 hours total | None directly, but catches bad hires before they cost you | None |
| Comparing bids line by line | 3 | Spreadsheet, the three bids, scope sheet | 3 to 6 hours | The gap between the best and worst bid, often $2,000 to $10,000 (planning estimate) | None |
| Electrical, gas, and structural work | 5, pro only | Licensed trade tools and testing gear | Per project | None, this is not a DIY saving | Electrical, gas, and structural work must be done by licensed professionals and inspected under the NEC and IRC |
The honest rule: do the vetting yourself, because no one else will care as much about the outcome, and hire licensed pros for the work itself. Vetting is paperwork and phone calls, not construction skill, and it is the highest-return work on any remodel.
Step-by-Step: Hiring a Contractor, in Order
Step 1: Write the scope before you call anyone, 1 to 2 days. List every room, every change, and every finish choice, with brand and model where it matters. A contractor cannot price “update the bathroom.” They can price a new shower, vanity, toilet, tile floor, and paint, with no layout changes. Send the identical scope sheet to every bidder.
Step 2: Build a shortlist of five or six names, 3 to 7 days. Ask friends, neighbors, and coworkers for recent recommendations, check trade association directories, and search each company name with the words scam, complaint, and lawsuit. Drop anyone with unresolved complaints or no verifiable business address.
Step 3: Verify license and insurance yourself, 30 minutes per contractor. Get the license number and look it up on your state or local licensing board’s website. Confirm the license is current, covers the type of work you need, and belongs to the business on the bid. Ask for a certificate of insurance for general liability and workers’ compensation, and have the insurer send it to you directly. Do not accept a photocopy at face value.
Step 4: Call three references, including one from at least a year ago, 1 to 2 hours. Ask whether the crew showed up on time, whether the price changed and why, how change orders were handled, and whether the contractor returned for warranty work. Ask to visit one finished project in person if the job is large.
Step 5: Get three itemized bids on the identical scope, 1 to 2 weeks. Each bid should break out labor, materials, allowances, permits, disposal, timeline, and payment schedule. Walk the site with each bidder so they all see the same conditions. Compare line by line, not by total alone.
Step 6: Score the finalists with the vetting checklist below, 1 hour. A contractor who scores below the pass mark does not get the job, however friendly the site visit felt. Scores beat gut feelings, because gut feelings are what high-pressure sales tactics are designed to manipulate.
Step 7: Sign a written contract and set the payment schedule, 1 to 3 days. The contract should include the contractor’s name, address, phone, and license number, a detailed scope, start and completion dates, a milestone payment schedule, a change-order procedure in writing, permit responsibility, cleanup and disposal, and warranty terms. Never sign a blank document, and never pay in cash.
Step 8: Manage the job with weekly check-ins, through completion. Walk the site weekly, photograph progress, approve change orders in writing before the work starts, and collect lien waivers with each payment. Hold the final payment until the punch list is complete and inspections have passed.
The Vetting Checklist: Score Every Finalist
Give one point for each item the contractor passes, and require at least 9 out of 11 before signing. This checklist is the gap most online hiring guides leave out: they tell you what to ask, but not how to decide.
| Check | What Passes | Points |
|---|---|---|
| License verified on the board’s website | Current, correct trade, matches the business name on the bid | 1 |
| General liability insurance certificate | Current, sent by the insurer, covers your project size | 1 |
| Workers’ compensation coverage | Current, or a valid exemption where your state allows one | 1 |
| Three references called | All three reached, at least one project a year old or older | 1 |
| Itemized written bid | Labor, materials, allowances, permits, disposal, timeline all shown | 1 |
| Written contract offered | Scope, dates, payment schedule, change orders, warranty all included | 1 |
| Permit responsibility accepted | Contractor pulls permits and schedules inspections | 1 |
| Payment tied to milestones | No more than 10 to 30 percent upfront, final payment after sign-off | 1 |
| Physical business address | Real address, not only a mobile number and a truck | 1 |
| Complaint history clean | No unresolved complaints with the licensing board or consumer agency | 1 |
| Communication test passed | Returns calls within one business day during bidding | 1 |
A score of 9 to 11 means hire with confidence. A score of 7 to 8 means fix the missing items in writing before signing, or keep looking. A score below 7 means walk away, no matter how good the price looks.
Materials and Tools: The Hiring Kit
You need no special software to hire well. Keep a folder, physical or digital, for each bidder: the scope sheet you sent, their bid, their license printout, their insurance certificate, reference notes, and every email. Keep a single bid-comparison spreadsheet with one column per bidder and one row per line item, so gaps jump out. Photograph each room before work starts and each wall once opened, so hidden-condition surprises are documented, not argued about. Bring a tape measure to every site walk, and write down every verbal promise the same day, then confirm it by email. If it is not in writing, it does not exist.
Mistakes That Cost Homeowners Thousands
Choosing the lowest bid without reading the lines. A bid thousands lower usually excludes scope, uses cheaper materials, or sets allowances so low that change orders will erase the saving. Compare lines, not totals.
Paying a large deposit upfront. A deposit of 10 to 30 percent is normal; anything over 50 percent before work starts is a red flag, and full payment upfront is a reason to walk away. Some states cap deposits by law, so check yours.
Skipping the license check because the contractor seemed nice. Licenses are verified on a website in minutes. A contractor who resists giving a license number has already given you the answer.
Approving verbal change orders. Every change gets a written price and a signature before work starts. Verbal approvals are the most common source of final-invoice disputes.
Skipping permits to save time. Unpermitted work surfaces at resale, at insurance claim time, and at inspection, and fixing it after the fact costs far more than the permit fee.
Paying the final payment before the punch list is done. Once the contractor is paid in full, your leverage for callbacks is gone. Hold the final 10 percent until every item is complete and inspections have passed.
Forgetting lien waivers. If a subcontractor or supplier is not paid by your contractor, they may file a lien against your home in some states, even though you paid the contractor in full. Collect a lien waiver with each progress payment and a final waiver at completion.
Permits and Safety
Most structural, electrical, plumbing, and gas work requires a permit and inspection under local codes based on the IRC and NEC. Your contractor should pull the permits and schedule the inspections; if they ask you to pull an owner permit so they can work under it, treat that as a red flag. Pre-1978 homes need EPA RRP lead-safe practices for work that disturbs paint, and pre-1980 homes should have suspect materials tested for asbestos before demo. Never let work proceed on a home with suspected asbestos until testing is back. Keep children and pets out of the work area, confirm the crew’s dust and debris controls, and never allow a contractor to work on live electrical or gas systems without the proper license and shutoff procedures.
Hiring a Contractor: 6 Questions, Red Flags, and License Checks
Question 1: Are you licensed for this type of work in my area, and can I have the license number? A good answer is the number itself, offered without hesitation. Verify it on your state or local licensing board’s website before the next meeting.
Question 2: Can your insurer send me a current certificate for general liability and workers’ compensation? A good answer is yes, with the certificate arriving from the insurer or agent, not as a photocopy from the contractor’s truck. Call the insurer to confirm the policy is active.
Question 3: Can I call three references, including one from a project at least a year old? A good answer is three names and numbers on the spot. Refusal, or only very recent references, is a warning sign.
Question 4: Will you give me an itemized bid on my written scope, and will you pull the permits? A good answer is yes to both, with allowances priced at realistic levels for the finishes you actually want.
Question 5: What is your payment schedule, and what does your warranty cover? A good answer ties payments to completed milestones, keeps the final payment after sign-off, and offers at least a one-year written workmanship warranty.
Question 6: Who will be on site every day, and how do you handle change orders? A good answer names a site supervisor, gives a communication routine, and requires every change in writing with a price before work starts.
Red flags that should make you walk away: no license number or one that will not verify; no proof of insurance; a demand for cash only or full payment upfront; pressure to sign today for a special price; refusal to put scope, price, or changes in writing; an offer to skip permits; no physical business address; a bid far below the others with little detail; and a contractor who asks you to sign a blank document or to pull the permit yourself. Any one of these is enough to end the conversation.
State license-board lookup: search for your state contractor licensing board or your city building department, enter the license number or business name, and confirm the license is current, covers the trade you need, and shows no unresolved disciplinary action. Also check your state consumer protection agency and the Better Business Bureau for complaints. This check takes minutes and is the single most valuable step in the whole process.
If a contractor disappears mid-job: stop payments immediately, document the site with dated photos, contact your licensing board and consumer protection agency, and check whether the contractor’s bond covers your loss. Do not hire a replacement to redo undocumented work until you have photos and a written record of what was left unfinished, because that record is what a claim or a new contractor’s bid will be built on.
Financing the Job: General Information
Most homeowners pay for a remodel from savings, a home equity line of credit (HELOC), a home equity loan, a cash-out refinance, or a personal loan. A HELOC works like a credit line you draw on during the project, a home equity loan gives a lump sum with fixed payments, a cash-out refinance replaces your mortgage with a larger one and takes the difference in cash, and a personal loan needs no home equity but usually carries a shorter term. This is general information only, not financial advice, and no specific rates are quoted here because rates depend on credit, equity, and market conditions at the time you apply. One hiring rule applies to every option: never let a contractor arrange your financing or pressure you into a loan, and never sign a financing document at the same table as the construction contract without time to review it separately.
FAQs
How many bids should I get before hiring a contractor? Get three written, itemized bids on the identical scope sheet. Three bids reveal the real price range and expose a bid that is missing scope. One bid tells you nothing about the market, and five or more bids waste everyone’s time.
How much should I pay upfront? A deposit of 10 to 30 percent is normal, with the rest tied to completed milestones and the final 10 percent held until sign-off. Never pay in full before work starts, never pay cash, and check whether your state caps deposits by law.
How do I check a contractor’s license? Get the license number, then look it up on your state or local licensing board’s website. Confirm it is current, covers the trade you need, matches the business name on the bid, and shows no unresolved disciplinary action.
What should a contractor’s bid include? Labor, materials, allowances priced at realistic levels, permit fees, disposal, a timeline with start and completion dates, and a payment schedule. A single lump-sum number with no breakdown is not a bid you can compare.
Should I hire the cheapest contractor? Not automatically. The Federal Trade Commission advises against automatically choosing the lowest bidder and recommends asking for an explanation of price differences. A low bid often means missing scope, low allowances, or uninsured labor.
What if my contractor does poor work or walks off the job? Document everything with dated photos, stop further payments, contact your licensing board and consumer protection agency, and check the contractor’s bond. Keep every contract, change order, payment receipt, and lien waiver, because that paper trail is what any claim will rest on.
Bottom Line
Hiring well is mostly paperwork done before the fun starts: a written scope, a verified license, real insurance, three itemized bids, and a milestone contract. Do that work and the project itself gets simpler, because the contractor you hire is the one who passed the checks, not the one who gave the smoothest sales pitch. This guide links up to our planning hub: start with The Home Renovation Budget Planner to set your number, then use the checklist above to hire the right person to spend it. When you are ready to compare contractors, get three quotes through our contact page and bring this guide’s checklist to every site visit.