Understanding Contractor Estimates
Quick Answer
A low bid is rarely a good bid. Learn how to decode the fine print and recognize what contractors are leaving out of their quotes to appear cheaper.
The Anatomy of a Legitimate Estimate
When you receive a quote for a major exterior remodeling project in Central Iowa, it should never be a single number scribbled on the back of a business card. A professional, binding estimate is a detailed legal document that protects both you and the contractor.
Every Quote Must Include:
- Line-Item Materials: Exact brands, product lines, and colors (e.g., "Owens Corning Duration in Onyx Black," not just "Architectural Shingles").
- Labor Breakdown: Details on tear-off, disposal fees, and installation labor.
- Permit Fees: Clear indication of who is acquiring and paying for city permits.
- Timeline: Proposed start dates and estimated duration of the project.
- Warranty Information: Both the manufacturer's product warranty and the contractor's workmanship warranty.
The "Allowances" Trap
The most common tactic contractors use to artificially lower a bid is the use of "Allowances." An allowance is a placeholder budget for a material that hasn't been precisely selected yet.
Example: A bad contractor might include a "$2,500 Allowance for Windows" in a siding bid. This makes their total estimate look $3,000 cheaper than a competitor. But when it comes time to order the windows, you realize that $2,500 only covers bottom-tier, builder-grade vinyl. To get the high-quality Pella windows you actually want, you suddenly have to pay a massive "Change Order" fee, ballooning the final invoice past the honest competitor's quote.
Estimate vs. Bid vs. Quote
Estimate: A rough, educated guess based on average industry pricing. It is not legally binding. The final cost can fluctuate wildly.
Quote / Bid: A firm, legally binding offer. Once you sign a Quote, the contractor cannot arbitrarily charge you more unless they discover hidden structural damage (like rotting decking) that requires an official, signed "Change Order."