The fastest mistake is signing with the lowest quote before you understand what it does not include. If you are comparing options, our guide on window replacement costs in Austin breaks down the real price drivers. Custom measurement or stock sizing? Who backs the warranty, the contractor or the manufacturer? How many windows per day does the crew actually install? These are answerable questions, and asking them separates solid contractors from the ones who get sloppy at installation.
Check Insurance First, Not Credentials
Ask for a certificate of general liability insurance before the first meeting. You can verify a contractor's license status through the Texas Department of Licensing and Regulation. A contractor installing windows without proper coverage leaves you holding the bag if something goes wrong on your property. Framed opening damage, a cracked sill, a worker injury, all of that becomes your problem without proper coverage. Most legitimate window contractors in Austin carry at least $1 million in general liability. If they cannot produce a certificate quickly, move on.
Custom Measurement vs. Stock Sizing
This question reveals the most about how a contractor operates. Stock window sizing rounds your opening to the nearest standard dimension, which means gap-filling with caulk or backer material instead of a tight frame fit. A custom measured window is ordered to your exact rough opening. The seal is better. The look is cleaner. David Adams measures every window opening himself before ordering. That is the standard worth asking about.
Ask About the Installation Crew
Some companies use a two-person crew for efficiency. Others send one person and take twice as long, which matters on a full-house replacement where weather exposure is a real factor. Ask who specifically will be doing the installation. Is it the company's own employees or a subcontracted crew? The answer tells you a lot about accountability when something needs to be fixed after the job is done.
Understand the Warranty
A manufacturer warranty covers the window unit itself, the glass seal, the hardware, the frame. It does not cover installation errors, which is where most post-installation problems originate. Ask whether the contractor provides a separate workmanship warranty on the installation. A company confident in its work offers one. Austin Window Pros backs the installation alongside the manufacturer warranty on every window replacement project.
Red Flags to Watch For
A quote significantly below every other estimate is not good luck. It usually means something is different, lower-grade window units, no custom measuring, a subcontracted crew with limited accountability, or a warranty with exclusions in the fine print. Pressure to sign the same day is another flag. Legitimate contractors in Austin give you time to compare.
What a Good First Meeting Looks Like
The contractor should come to your home, not ask you to a showroom. They should measure the windows themselves. They should give you material options with honest trade-offs, not steer you toward whatever margin is best for them. David Adams has been running exactly this kind of in-home consultation since 1992. Schedule yours today or call (512) 422-1907.
David Adams
Founder & Owner, Austin Window Pros
David Adams started in the home improvement business in 1979 and founded Austin Window Pros in 1992. He personally handles every consultation and has installed thousands of windows and doors across Austin and Central Texas.
About Austin Window Pros →
Ready for a Free Consultation?
No pressure, no obligation. We will assess your home and provide an honest quote for any window, door, or siding project.