Choosing a contractor is one of the most important decisions you'll make as a homeowner. Get it right and your project runs smoothly, on time, and on budget. Get it wrong and you could be dealing with shoddy work, unexpected costs, or a contractor who disappears mid-job.

Here's what you need to know before you sign anything.

Verify Licensing and Insurance Before Anything Else

This is non-negotiable. In Virginia, contractors performing work over $1,000 must hold a valid contractor's license issued by the Department of Professional and Occupational Regulation (DPOR). You can verify any license at the DPOR website in minutes.

Beyond licensing, make sure your contractor carries:

• General liability insurance — covers damage to your property during the project
• Workers' compensation insurance — protects you if a worker is injured on your property

Ask for certificates of insurance and call the insurer directly to confirm the policies are active. A legitimate contractor will hand these over without hesitation. If they push back or make excuses, walk away.

Look for a Class A Contractor License

Virginia issues three contractor license classes: A, B, and C. Class A is the highest tier, required for projects over $120,000 and demonstrating the greatest level of experience and financial responsibility.

For major exterior work — full roof replacements, whole-house siding, multiple windows — you want a Class A contractor. It signals that the company has the experience, staffing, and financial backing to handle large-scale projects correctly.

Check References and Online Reviews

Ask every contractor you're considering for at least three recent references — homeowners in your area who had similar work done within the last two years. Then actually call them. Ask:

• Did the crew show up on time and stay on schedule?
• Was the final cost close to the original estimate?
• Were there any surprises, and how were they handled?
• Would you hire this contractor again?

Beyond personal references, check Google reviews, the Better Business Bureau, and Angi. Look for patterns. One bad review in fifty is noise. Five complaints about the same issue — poor cleanup, surprise charges, unresponsive after payment — is a pattern worth taking seriously.

Get Multiple Written Estimates

Never accept a verbal quote. Get at least three written estimates for any significant project. A proper estimate should include:

• A detailed scope of work (materials, brands, quantities)
• Project timeline with start and completion dates
• Payment schedule
• Warranty terms for both labor and materials

When comparing estimates, the lowest price is rarely the best deal. If one bid is dramatically lower than the others, ask why. It often means cheaper materials, less experienced labor, or a contractor who plans to cut corners once work begins.

Understand the Contract Before You Sign

A solid contract protects both you and the contractor. Before signing, make sure it clearly spells out:

• Exact scope of work — what is and isn't included
• Material specifications — brand names, model numbers, colors
• Payment terms — never pay more than 10–30% upfront
• Change order process — how additional costs get approved
• Cleanup and disposal — who handles debris removal
• Warranty — what's covered and for how long

If a contractor asks for more than half the total cost upfront, that's a red flag. Reputable companies have the financial stability to purchase materials without requiring a large deposit.

Watch for These Red Flags

Even with all the right paperwork, some contractors aren't worth hiring. Be cautious if a contractor:

• Pressures you to decide immediately — a legitimate contractor won't disappear if you take a day to think it over
• Only accepts cash — this makes disputes nearly impossible to resolve
• Has no physical address or local presence — storm chasers often appear after severe weather and vanish just as quickly
• Can't provide proof of insurance on the spot — this is basic documentation every professional carries
• Asks you to pull your own permits — this shifts liability to you and is a sign the contractor may not be properly licensed

Ask About Warranties

Quality exterior work should come with a warranty — both from the manufacturer on materials and from the contractor on labor. For roofing, look for manufacturer warranties of 25 years or more on shingles. For siding and windows, ask about product warranties and what the contractor guarantees on their installation work.

Get all warranty terms in writing. A verbal promise means nothing if the contractor is unreachable two years from now.

Local Knowledge Matters

A contractor who works regularly in your area understands local building codes, permit requirements, and the specific weather conditions your home faces. In Northern Virginia, that means knowing how to handle humid summers, freeze-thaw cycles in winter, and the occasional severe storm.

Local contractors also have a reputation to protect in the community. They're more accountable than out-of-town crews who have no ongoing relationship with your neighborhood.

The Bottom Line

Hiring a contractor doesn't have to be stressful if you do your homework. Verify licensing and insurance, check references, get everything in writing, and trust your instincts. A contractor who is transparent, communicative, and willing to answer your questions is far more likely to deliver work you'll be proud of for years to come.

If you're in Northern Virginia and need exterior remodeling — roofing, siding, windows, doors, or gutters — Star Home Remodeling is a Class A licensed, fully insured contractor with over a decade of experience serving Fairfax, Arlington, Alexandria, and the surrounding communities. We're happy to answer any of these questions and provide a free, no-obligation estimate.