How to Get Contractor Quotes: Compare Bids & Avoid Overpaying

Step 1: Write Your Scope of Work First

The single biggest mistake homeowners make when getting contractor quotes is calling contractors before they know what they want. “We want to redo our bathroom” generates wildly different estimates because every contractor imagines a different project. “We want to replace the tub with a 36x48 walk-in shower, install a new single-sink vanity, replace the floor with 12x24 porcelain tile, install a new exhaust fan vented to exterior, and repaint” generates comparable estimates.

Your scope of work document should include: the exact work to be done, the materials you want (by type and grade if not brand), what is excluded from the contractor's work, your timeline, and whether permits are required. For anything over $10,000, include floor plans or sketches. Attach specification sheets for fixtures you have already selected. The more detail you provide, the more competitive your bids will be — and the less room contractors have to pad contingency budgets for unknowns you left unspecified.

Per a 2025 Angi survey of 2,400 homeowners, those who provided a written scope of work to contractors received estimates that averaged 18 percent lower than those who described their project verbally — simply because contractors padded less for scope uncertainty. Use our construction cost calculator to develop a realistic budget range before reaching out, so you can evaluate whether bids are in the right ballpark.

Step 2: Find Qualified Contractors to Bid

Not all bids are worth getting. Three bids from unqualified contractors is worse than one bid from a well-vetted professional. Vet before you invite.

The primary verification checklist before inviting a contractor to bid:

• ✓Valid state contractor license — Verify directly on your state contractor licensing board website, not just on the contractor's business card. 43 states require general contractors to be licensed; 7 do not have state-level licensing requirements. Requirements vary by project type and dollar threshold.
• ✓General liability insurance — Minimum $1 million per occurrence for residential work. Ask for a certificate of insurance naming you as additionally insured. This protects you if a worker damages your property.
• ✓Workers' compensation coverage — Mandatory in most states for any contractor with employees. Without it, you may be liable for medical bills if a worker is injured on your property.
• ✓Relevant experience — A contractor who builds commercial buildings may not be the right choice for a bathroom tile job. Ask specifically about their last 3 to 5 projects similar to yours.
• ✓Verifiable references — Not testimonials on their own website. Actual phone calls or site visits to clients from the past 12 months. Ask specifically about timeline adherence and how disputes were resolved.

Best sources for finding qualified contractors: referrals from friends or neighbors who have had similar work done are still the most reliable. The NAHB (National Association of Home Builders) member directory and NARI (National Association of the Remodeling Industry) contractor finder are useful for credentialed professionals. Read our full guide on how to find a good contractor for the complete vetting process.

Step 3: Run a Parallel Bid Process

Contact 3 to 5 pre-vetted contractors simultaneously, send them your written scope document, and give them the same deadline to respond. This is important: do not stagger your bid requests, and do not share bid numbers from other contractors with bidders still in process. You want independent assessments, not a reverse auction.

Give contractors enough time to visit the site and prepare a real estimate. For a small project under $10,000, two weeks is reasonable. For a project over $50,000, three to four weeks gives contractors time to get sub-bids on specialty trades and prepare an accurate proposal. Contractors who turn around bids in 24 to 48 hours for complex projects are usually using ballpark numbers rather than real cost estimates — treat those numbers with skepticism.

When bids come in, read them completely before communicating with any of the bidders. Note what each contractor has included and excluded. Note material specs. Note payment terms. Note timeline. You are not ready to compare prices until you understand what each bid actually covers.

How to Read a Contractor Bid: What to Look For

A professional bid should be a document, not a number on a sticky note. Here is what a real bid includes versus what a weak bid looks like:

Pay particular attention to the exclusions list. This is where contractors legally limit what they are responsible for. Common exclusions that create cost surprises: hidden water damage discovered during demolition, HVAC modifications if project affects ductwork, painting adjacent spaces disturbed during work, and haul-away for existing materials. Ask each bidder to make their exclusions list as comprehensive as possible — it protects both of you.

Step 4: Build a Bid Comparison Matrix

Once bids are in, put them in a spreadsheet side by side. Row by row, compare what each contractor includes for each line item. This exercise almost always reveals that you are not comparing equal bids — one contractor is including a permit that another excluded, one is using 3/4-inch plywood where another specified 1/2-inch OSB.

For each discrepancy, either ask the lower-cost bidder to clarify whether they included that item or ask the higher-cost bidder for their pricing on that specific element. You are trying to level the playing field so you can make an honest comparison. Once bids are normalized to the same scope, you can evaluate price difference as a function of contractor overhead, margin, or efficiency — not hidden scope differences.

According to data from the McKinley Construction Management Group, homeowners who performed this side-by-side normalization before choosing a contractor saved an average of $4,200 on projects in the $20,000 to $60,000 range — not by going with the lowest bid, but by identifying and eliminating unnecessary cost items across the mid-range bids.

Understanding Labor vs. Material Cost Splits

Most homeowners are surprised by how much of a project cost is labor. Across residential construction, labor typically runs 40 to 60 percent of total project cost, per RSMeans 2026 labor data. On finish work like tile installation, painting, or trim carpentry, labor can reach 60 to 70 percent. On material-heavy projects like roofing or concrete, materials run higher at 50 to 60 percent.

This matters because it tells you where you can negotiate. Materials are often negotiable — contractors have supplier relationships and can frequently source materials at 15 to 25 percent below retail prices you would pay at a big-box store. If you supply your own materials, you remove that flexibility and potentially the contractor's warranty on installed materials. Labor is less negotiable because it is directly tied to crew costs, insurance, and overhead.

General contractors typically mark up subcontractor costs by 10 to 25 percent, per NAHB data on contractor overhead structures. This is their coordination fee for scheduling, supervising, and being liable for subcontractor work quality. When you see large projects with multiple trades, this markup adds up — which is why some homeowners on large renovations hire an owner's rep or construction manager instead of a general contractor. For smaller single-trade projects, you are often better served hiring the specialty trade directly. See our home renovation cost guide for trade-by-trade cost breakdowns.

Red Flags That Should End a Bid Conversation

Some red flags are worth clarifying. Others mean you walk away immediately. Here is the difference:

Walk Away Immediately If:

• ●Contractor cannot provide a valid state license number or certificate of insurance
• ●They ask for more than 30 to 50 percent upfront, especially for materials they claim to need to order (legitimate contractors have supplier credit accounts)
• ●They insist on cash payment only and offer a “discount” for cash
• ●They cannot provide a list of 3 recent references willing to be contacted by phone
• ●They pressure you to sign immediately with limited-time pricing offers

Ask for Clarification Before Deciding If:

• ●Their bid is significantly lower than others — ask specifically what they have excluded and what grade materials they priced
• ●Their bid is significantly higher — ask for a line-item breakdown to understand where the premium is coming from
• ●Payment terms are unusual — not necessarily wrong, but understand why
• ●Their timeline is shorter than others — could be efficiency, could be they plan to rush

Payment Schedule: What Is Fair and What Is Not

Payment structure is one of the most consequential terms in a contractor agreement and one of the least-discussed. A payment schedule that is too front-loaded leaves you with little leverage if work stalls or quality problems emerge. A schedule too back-loaded creates cash flow problems for the contractor and may cause them to deprioritize your project in favor of clients who pay more upfront.

Standard payment schedules by project type, based on NAHB member survey data:

Always tie payment to verified milestones, not calendar dates. “Frame complete and inspected” is a verifiable milestone. “End of week three” is not. If a contractor misses a milestone, your payment obligation should pause accordingly — this creates a natural incentive to stay on schedule.

Permit Costs: Who Is Responsible

Building permits should almost always be pulled by the contractor, not the homeowner. When a contractor pulls a permit, they are taking legal responsibility for the work meeting code. If you pull the permit yourself (acting as owner-builder), you assume that liability — and in most states, you forfeit the ability to sue for defective workmanship because you were the responsible party on the permit.

Permit costs should appear as a line item in every bid for projects that require them. Per our building permit cost guide, permit fees for residential projects range from $150 for minor electrical work to $5,000+ for major additions. Any contractor who does not mention permits for a project that clearly requires them — structural work, new electrical circuits, plumbing changes, additions — is a contractor who may be planning to skip the inspection process. That is your liability, not theirs.

Negotiating Effectively Without Burning Bridges

Contractors expect some negotiation, but how you negotiate matters as much as what you negotiate. Asking a contractor to simply “sharpen their pencil” without providing any basis signals that you are selecting on price alone — which is not a relationship most quality contractors want to pursue.

Effective negotiation strategies that work:

• 1.Adjust material grades, not labor — Ask what the cost difference is if you use standard-grade fixtures versus premium. Often a $2,000 to $5,000 savings with minimal visual impact.
• 2.Stage the project — If a contractor can schedule your project during a slow period (typically January to March in most markets), they may reduce the bid by 5 to 15 percent in exchange for fill-in scheduling flexibility.
• 3.Offer to handle demo yourself — Demolition is straightforward for most homeowners on interior projects. A GC typically charges $50 to $85 per hour for demo labor; doing it yourself can save $500 to $3,000 on a bathroom or kitchen project.
• 4.Supply your own fixtures — If you can source your own tile, fixtures, or cabinets at a price below the contractor's material cost, ask for a materials-only exclusion with the contractor's agreement on installation.
• 5.Reduce scope rather than price — Phase the project. Do the bathroom tile now and the vanity upgrade next year. Smaller projects are easier for contractors to fit into their schedule and often priced more competitively per scope unit.

Change Orders: The Hidden Cost of Vague Bids

The cheapest bid has a dirty secret: change orders. A change order is a written amendment to the original contract scope, typically adding cost. Some change orders are inevitable — hidden damage behind walls, discontinued materials, code upgrades triggered by adjacent work. But many change orders are contractors' way of recovering margin on a bid they sharpened too aggressively to win the job.

Per a 2024 survey by the National Association of the Remodeling Industry, homeowners who reported significant cost overruns attributed 68 percent of the overage to change orders. Projects that went over budget by 20 percent or more almost always involved change orders covering scope items the homeowner assumed were included but the contractor had not priced.

Protect yourself: require that all change orders be submitted in writing with cost breakdown before work proceeds. Require a 48-hour review period for any change order over $500. Your contract should state that no change order is valid unless signed by both parties. Verbal approvals during construction are legally enforceable in some states — but in practice, they create disputes at final payment time.

Frequently Asked Questions