If you've received several estimates for new windows or doors, you've probably noticed something surprising—the prices can vary by thousands of dollars for what appears to be the exact same project.
One contractor may quote $18,000 while another quotes $28,000.
So why such a huge difference?
The answer is simple: not all quotes include the same products, materials, installation methods, or level of protection for the homeowner.
Unfortunately, many homeowners don't realize these differences until long after the installation is complete.
The Lowest Price Isn't Always the Best Value
At ALL Dwelling Solutions, we sometime meet homeowners who tell us:
"Another company is much cheaper."
Instead of immediately trying to lower our price, we ask one question:
"Can we take a look at the other estimate?"
Many times, the differences become obvious within a few minutes.
1. Is the Contractor Licensed and Insured?
One of the first things we check is whether the contractor is properly licensed and insured.
In Maryland, legitimate home improvement contractors should hold an active MHIC (Maryland Home Improvement Commission) license.
Working with an unlicensed contractor may leave homeowners with:
No state oversight
Limited legal protection
No verification of qualifications
Greater financial risk if something goes wrong
Insurance is equally important. If someone gets injured on your property and the contractor isn't properly insured, the homeowner may face unexpected liability.
2. What Window Brand Are You Actually Buying?
Believe it or not, some estimates don't even specify the manufacturer.
Instead, they simply say:
Vinyl window
Double-hung window
Replacement window
Without a brand name, homeowners have no way to compare:
Energy performance
Warranty coverage
Glass package
Frame construction
Hardware quality
Long-term durability
You should always know exactly what product you're purchasing before signing a contract.
3. Does the Estimate Explain the Installation Process?
This is one of the biggest differences we see.
Many estimates include only one line:
"Replace existing windows."
That's it.
But proper window installation involves much more than simply removing the old window and installing a new one.
A professional installation should clearly describe items such as:
Removal of existing windows
Inspection of the rough opening
Laser leveling for accurate installation
Structural shimming
Professional-grade fasteners
Low-expansion insulation foam
Self-adhesive flashing for water management
Exterior caulking
Interior and exterior finishing
Cleanup and disposal
If these items aren't listed, ask the contractor how they will be performed.
4. What Happens If Rotten Wood Is Found?
Hidden wood rot is common, especially around older windows and doors.
Professional contractors should explain exactly how they handle hidden damage.
Will they:
Replace the damaged wood?
Use PVC where appropriate?
Rebuild the opening correctly?
Or will they simply cover the damage with aluminum trim or wood filler?
The answer can affect the life of your new windows for decades.
5. Who Will Actually Install Your Windows?
Many homeowners assume the salesperson they meet is part of the installation company.
Sometimes that's true.
Sometimes it isn't.
Some companies subcontract nearly every installation to crews the homeowner has never met.
Always ask:
Who performs the installation?
Are they employees or subcontractors?
How much experience do they have?
Who is responsible if problems arise?
6. The Cost of Improper Installation
Unfortunately, we receive calls every year from homeowners whose recently installed windows are already causing problems.
Common issues include:
Water leaks
Air drafts
Windows that won't operate properly
Poor insulation
Rot developing around the frame
Premature seal failure
In many cases, the windows themselves aren't the problem.
The installation is.
Repairing a poorly installed window often costs significantly more than installing it correctly the first time.
Look Beyond the Bottom Line
When comparing quotes, don't compare only the final number.
Compare:
✓ Licensing and insurance
✓ Window manufacturer
✓ Warranty
✓ Installation methods
✓ Materials used
✓ Flashing and waterproofing
✓ Insulation methods
✓ Finish work
✓ Who performs the installation
✓ Company's reputation and reviews
A detailed proposal may cost more initially, but it often saves thousands of dollars in repairs, callbacks, and premature replacements.
We believe homeowners deserve complete transparency.
That's why our proposals clearly explain:
The exact products being installed
The installation methods we use
The materials included
Our contingency process if hidden damage is discovered
What is and isn't included before work begins
We don't believe in surprises after the contract is signed.
Our goal isn't simply to install new windows or doors.
Our goal is to install them correctly, protect your home from future problems, and provide workmanship that lasts for decades.
Because in the end, the true value of a window replacement isn't measured by the lowest quote—it's measured by how well the installation performs for years to come.
Get a Second Opinion Quote You Can Actually Compare
