The $4,800 quote ends up at $7,200. Not because the painter cheated — because the bid didn't include line items that any thorough job requires. Here's what to look for so the final invoice matches the estimate.
1. Drywall and plaster patching
Most rooms have at least one nail hole, anchor cavity, or stress crack. A quote that doesn't mention "drywall patching included" or "up to N hours of patching included" will bill it as extras at $60–$95/hour.
2. Caulking refresh on trim joints
Interior trim joints crack over time. Replacing failing caulk before painting is a 1–3 hour job per room — billed extra if not in scope. The paint over fresh caulk lasts longer than paint over cracked caulk.
3. Switch-plate, outlet-cover, and curtain-rod removal
Painting around hardware is faster but ugly close-up. Removal-and-reinstall adds 15–30 minutes per room. Most premium painters include it; most low-bid quotes don't.
4. EPA RRP lead-safe practices (pre-1978 homes)
Federal law requires lead-safe practices (containment, HEPA vacuums, documented cleanup) on any home built before 1978. EPA RRP-certified crews charge for the containment time and disposal. Quotes that don't mention it on a pre-1978 home are either skipping it (illegal) or planning to charge later.
5. Color sampling and consultation
Many painters charge $50–$150 per sample board after the first 2–3. Premium operators include 6–12 sample boards in the base bid because color choice is the longest stage of the project.
6. Daily floor + furniture protection
Plastic, drop cloths, and blue tape applied daily and removed daily. The materials are cheap; the labor is real. Quotes that don't mention it sometimes use one set of drops for the whole job — which gets paint on your wood floor after week one.
7. Final walk-through and touch-up
The last day is touch-up only — every cut-line, every spot the brush missed. A quote without a final walk-through line is a quote that ends when the painter says they're done, not when you do.
8. Disposal of paint cans and protective materials
MA hazardous waste rules on dried-but-not-empty paint cans add disposal cost. Some contractors leave half-full cans on your curb; insured operators dispose properly and include it.
How to ask
One question handles all eight: "Can I see your written, line-itemized scope before signing?" A real quote breaks these out. A vague "painting included" quote does not. See typical inclusions in our Massachusetts painting cost guide, or try the cost calculator for a rough $ range based on standard MA contractor scoping.