Window & patio door replacement Denver
Window Replacement in Denver, CO
Velazquez Windows provides professional window replacement in Denver CO, helping homeowners upgrade outdated windows with energy-efficient replacement windows designed for Colorado weather. Our experienced team also specializes in window installation and patio door replacement with honest pricing and quality workmanship.

Free
In-home estimate
Owner on every job
Free in-home measure
Manufacturer-backed glass
We haul the old units away
What we do
Window & Door Services in Denver: Four Jobs, Done Properly
Windows and doors are all we do — so the measuring, the flashing and the finish work are the parts we have practised most.

Window Replacement
Tired, drafty or fogged-up windows swapped for new insulated units that actually seal.

Patio & Sliding Doors
Sticking sliders and worn French doors replaced with smooth-running, weather-tight doors.

Window Installation
Full-frame or insert installs, properly flashed, insulated and trimmed — inside and out.

Home Window Upgrades
Low-E glass, argon fill, new grids, obscure or tempered glass and basement egress windows.

Why homeowners call us back
Why Denver Homeowners Choose a Small, Owner-Run Crew
You will not be handed to a call centre or a rotating sub-crew. Juan C. Velazquez quotes the job, works the job and is the person you call if anything needs a second look.
- One price per opening, in writing — units, labour, trim, disposal
- Every opening measured on site, never estimated from a photo
- Full-frame or insert install, whichever the frame actually needs
- Floors covered, site vacuumed, old glass hauled away the same day
- Straight advice — if a window only needs hardware, we say so
12+
Years in the trade
750+
Openings replaced
4.9
Average review score
1-2
Days for a typical home
How it works
From first call to clean-up.
Four steps, no surprises in between.
Step 01
Call or send the form
Tell us how many openings you are thinking about and what is bothering you about the current windows.
Step 02
Free in-home measure
Juan C. Velazquez comes out, measures every opening, checks the frames and talks through the options.
Step 03
A written quote
One clear price per opening — units, labour, trim, disposal. No pressure and no expiring discounts.
Step 04
Install day
Old units out, new ones in, insulated, sealed and trimmed. Floors covered, site swept, old glass hauled off.
Reviews
Reviews from Denver Window Replacement Customers
★★★★★
“Juan C. Velazquez measured everything himself and the quote was the price we paid. The crew covered the floors, worked two full days and you would not know anyone had been in the house. The difference in road noise alone was worth it.”
Marisol R.
Full house, 11 windows
★★★★★
“Our old slider took two hands and a shoulder to move. The new one glides with a finger. They were on time both days and cleaned up the old track properly instead of just covering it.”
Dan K.
Sliding patio door
★★★★★
“Straight answers, no upselling. He told us two of the windows were fine and only needed new hardware, which saved us money. That is why we called him back for the rest of the house.”
Priya S.
Kitchen and bath windows
Questions
The things people ask first.
Next step
Ready for a number you can trust?
Send a few details and we will arrange a free in-home measure at a time that suits you.


