How Much Do Contractors Typically Overcharge?
Based on analysis of thousands of real contractor quotes across 28 service categories, here's what the average overcharge looks like when a quote is flagged as inflated:
| Category | Avg Overcharge % | On a $10,000 Quote | Common Culprit |
|---|---|---|---|
| 🔧 Plumbing | 35% | $3,500 | Flat-rate markups on simple repairs |
| 🏠 Roofing | 32% | $3,200 | Material markup + unnecessary extras |
| 🚗 Auto Repair | 31% | $3,100 | Parts markup + inflated labor hours |
| ❄️ HVAC | 28% | $2,800 | Equipment brand substitution + add-ons |
| 🔨 Remodeling | 29% | $2,900 | Vague scope + change orders |
| 🪟 Windows / Doors | 30% | $3,000 | Branded markup vs. OEM equivalent |
| 🌿 Landscaping | 27% | $2,700 | Plant material markup |
| 🪵 Deck / Fencing | 26% | $2,600 | Material substitution + labor padding |
| 🎨 Painting | 24% | $2,400 | Paint quality claims + labor rate |
| 🏗️ Flooring | 23% | $2,300 | Material markup |
| ⚡ Electrician | 22% | $2,200 | Flat-rate books vs. actual time |
| ☀️ Solar | 18% | $1,800 | System sizing + inverter brand |
Note: These are averages for quotes that ARE overpriced. Not all quotes are inflated — roughly 45% of quotes analyzed by QuoteScore are fairly priced or even a good deal. The point isn't to be suspicious of every contractor, but to verify before signing.
Why Are Some Categories Overcharged More Than Others?
Emergency and Urgency Services (Plumbing, HVAC)
When your pipe bursts or your AC goes out in July, you're not in a position to comparison shop. Plumbers and HVAC companies know this. The lack of competitive pressure on urgent jobs translates to higher average overcharges in these categories. Getting a second opinion — even if it's just uploading the quote to QuoteScore — can reveal whether you're paying urgency pricing for a non-emergency repair.
Complex Material Pricing (Roofing, Windows)
When consumers can't easily verify material costs — "architectural shingles" or "triple-pane low-E glass" could mean many different products at many different price points — contractors have more room to mark up aggressively. Specifying exact brands and models in the quote is the main defense against material-level overcharging.
Hourly Rate Variability (Auto Repair)
Auto repair is highly variable because labor hours (book time) and parts markups both have wide ranges. A dealer versus an independent shop can charge 40% more for identical work. Parts purchased at list price versus wholesale cost (which the shop pays) can triple the apparent "parts cost" on the invoice.
The Multiple Quote Effect
The single most effective way to reduce overcharging is getting multiple quotes. Studies consistently show:
- Homeowners with 1 quote overpay by an average of 23%
- Homeowners with 2 quotes overpay by an average of 12%
- Homeowners with 3+ quotes overpay by an average of 6%
But multiple quotes have a practical problem: they take time, require scheduling multiple contractors, and still don't tell you which quote is actually fair (cheap isn't always better). QuoteScore's analysis cuts through this — you get an objective line-item analysis of every quote against real market data, so you know which is genuinely the best value regardless of price.
How QuoteScore Calculates Overcharges
QuoteScore analyzes each line item in your quote against a database built from real contractor quotes, parts retail pricing, regional labor rate data, and industry benchmarks. Our AI identifies:
- Parts markup: Comparing quoted parts prices to retail and wholesale benchmarks
- Labor rate: Comparing quoted labor rates to regional median rates for that trade
- Scope creep: Line items that are unusual, unnecessary, or rarely required for this type of job
- Comparison to comparable jobs: How does this quote compare to the distribution of quotes we've seen for similar work?
The result is a 0–100 score plus specific line-item flags and negotiation guidance. If your quote is overpriced, you'll know exactly where — and by how much.
Is Your Quote Fair? Check It Now
The savings calculator above gives you a statistical estimate based on averages. But your specific quote might be perfectly fair — or it might be inflated in ways the average doesn't capture. The only way to know for sure is to check your actual quote against real data. QuoteScore makes this free, instant, and requires no account. Upload your quote below.