Expert window and door replacement that transforms your home — sealed, secure, and stunning.
Build your estimate in seconds. All final quotes are confirmed on-site and include labour, materials, and cleanup.
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From a single window to a whole-home transformation, KO Carpentry delivers with precision and care.
Single-hung, double-hung, casement, bay, and picture windows. We remove the old and install the new with a clean, airtight finish that lasts decades.
Steel, fiberglass, and wood entry doors installed plumb and level every time. We handle the framing, weatherstripping, hardware, and finishing trim.
Smooth-gliding, properly sealed patio doors that bring light in and keep drafts out. French doors and sliding systems available in a range of styles.
Triple-pane glass, low-E coatings, and argon-filled units that cut your heating and cooling bills — and qualify for energy tax credits.
Add an extra layer of protection against harsh weather. Storm doors and windows installed over your existing units for year-round durability.
We install only trusted, high-quality brands — built for Kansas City weather and backed by strong warranties.
Fiberglass and steel entry doors available in hundreds of styles, finishes, and glass options. ENERGY STAR certified with lifetime warranty.
Smooth-gliding patio doors with superior weatherstripping, multi-point locking, and optional blinds between the glass.
Premium vinyl replacement windows with Low-E insulated glass, 45 color combinations, and a lifetime glass breakage warranty.
High-performance patio doors in two-lite and three-lite configurations with side lite and transom options. Available in dozens of color combinations.
Your home is protected at every step. We carry full liability insurance and all required trade licenses.
We quote the job up front — no surprise add-ons, no hidden labour charges. What we quote is what you pay.
We respect your schedule. Most jobs are booked and completed within the same week with minimal disruption.
Our work is backed by a lifetime craftsmanship guarantee — not just the manufacturer's warranty.
Four easy steps from first contact to finished installation.
We come to you, assess your windows and doors, and discuss your goals — no obligation, no pressure.
You receive a detailed written quote covering materials, labour, and timeline — all in plain language.
Our crew arrives on time, protects your home, and completes the installation to exacting standards.
We review every detail with you before we leave. No surprises, no mess — just a beautiful finished result.
Over 500 happy homeowners — and counting.
"KO Carpentry replaced all twelve windows in our colonial. The crew was professional, fast, and left the place spotless. Our heating bill dropped noticeably the very next month."
"I got three quotes and KO was the most honest — no upselling, no nonsense. The front door they installed is beautiful and fits perfectly. I'll use them again without hesitation."
"The sliding patio door they installed glides like silk. They finished in half a day and caulked everything immaculately. KO Carpentry genuinely takes pride in their work."
Everything you need to know before getting started.
Window replacement with KO Carpentry typically starts around $900 per window, installed. The final price depends on window size, style, and any upgrades like triple-pane glass or custom frame colors. We provide a free, no-obligation in-home estimate so you know the exact cost before committing.
Doors typically start around $2,500 installed, depending on the door style, material, and any glass or hardware upgrades. We install ProVia entry and patio doors and Alliance Hawthorne patio doors, both backed by strong manufacturer warranties.
Window replacement typically takes 2–4 weeks from order to install, while doors usually take 3–6 weeks depending on customization options chosen. Most installation appointments themselves are completed in a single day.
Yes! We offer financing through Acorn Finance. You can get pre-qualified online in seconds with no impact to your credit score, and choose a monthly payment plan that fits your budget.
KO Carpentry proudly serves Kansas City and the entire surrounding metro area, including Overland Park, Lee's Summit, Blue Springs, Independence, Olathe, and all nearby suburbs on both the Missouri and Kansas sides.
Yes, KO Carpentry LLC is fully licensed (Lic. # KO-2024-9821) and carries full liability insurance, so your home is protected throughout the entire installation process.
As a solo operator with 15+ years of experience — including past work for two of the major window and door companies in Kansas City — KO Carpentry has significantly lower overhead than large companies. That savings is passed directly to you without sacrificing quality, craftsmanship, or warranty coverage.
Yes, every installation is backed by a lifetime workmanship warranty from KO Carpentry, in addition to the manufacturer warranties on the windows and doors themselves.
Request your free, no-obligation quote today.