Maryland’s Trusted Window Replacement Company
Upgrade Your View With Energy Savings and Everyday Comfort
5-Star Reputation
10+ Years Experience
1,000+ Clients Served
Enhance Comfort, Efficiency, and Curb Appeal
Replacing outdated windows is one of the smartest ways to improve your home’s comfort and performance. At DZ Renovation, we install energy-efficient windows that look beautiful, reduce noise, and help regulate indoor temperatures all year long. Every window is measured, fit, and sealed with precision for maximum longevity and impact.
As a family and veteran-owned business, we’ve worked with more than a thousand Maryland homeowners to improve their homes with care and attention to detail. Our team makes the window replacement process simple — clear communication, clean installation, and results you’ll notice from the inside out.
What Makes Every DZ Window Project Exceptional
Style & Selection Guidance
Find Windows That Fit Your Home and Lifestyle
Replacing your windows is an investment in how your home looks, feels, and performs. Our team helps you compare styles, frame materials, and glass options to find what works best for your space and your goals — no confusing jargon, just clear advice and beautiful results.
- Guidance on the best window styles for your home’s design
- Easy comparisons between energy-efficient materials and finishes
- Honest recommendations to fit your budget and long-term plans
Energy Efficiency & Comfort
Enjoy a Quieter, More Comfortable Home
The right windows do more than update your look — they improve your daily life. Our energy-efficient installations help regulate temperature, reduce outside noise, and lower energy bills. You’ll feel the difference in comfort the very first day.
- Energy-saving glass that keeps your home cool in summer and warm in winter
- Airtight installation to prevent drafts and heat loss
- Insulated designs that make your home quieter and more efficient
“We got our Windows and Patio door in our townhome replaced…
about a year ago by DZ Renovations. New Windows and Patio door look great and has greatly improved the HVAC efficiency in our house. Look of the Windows and townhouse has changed completely for good.
[…] The whole project to replace about 14 windows and patio door in our townhouse was completed in shortest possible time. Their attention to detail and commitment to customer satisfaction is impressive. We would highly recommend DZ Renovations for any Windows/Doors replacement project.”
-Devesh S.
(via Google Review)
Custom Fit & Function
Designed to Look Great and Work Seamlessly
Every window we install is custom-measured and precision-fit to your home. From sliding and double-hung to picture and casement windows, we make sure every piece opens smoothly, seals tightly, and enhances the character of your space.
- Custom sizing for a clean, professional fit
- Smooth operation and secure locking systems
- Balanced design that complements your home’s aesthetic
Quality Craftsmanship
Installed by Experts Who Care About the Details
Our window installations are handled by experienced professionals who treat your home with the same care they give their own. We focus on precision, cleanliness, and respect — so when the job’s done, all you’ll notice are beautiful new windows that perform flawlessly.
- Local crews trained for detailed, careful installation
- Hands-on oversight from a family- and veteran-owned company
- Clean, respectful worksites and lasting results you can trust
More Ways We Can Help
See how we can help you improve every part of your home’s exterior.
Siding
Roofing
Windows
Exterior Doors
Gutters
A 4-Step Process, Tailored to Your Project
Request Your Estimate
Share a few details about your project, and our team will quickly review your information. We’ll make sure we understand your goals before taking the next step.
Connect With Our Team
We’ll give you a quick call to discuss your project in more detail and schedule your walkthrough. No pushy sales talk — just honest, helpful communication.
On-Site Walkthrough
An estimator meets you at your home to take measurements, review materials, and answer your questions. You’ll get expert recommendations and see what’s possible for your home.
Review Your Proposal
You’ll receive a clear, detailed proposal outlining the work, materials, and pricing. Once approved, our crew gets to work delivering results you’ll love for years to come.
Read What our Customers Have to Say
“It was a great experience having DZ renovation replacing my roofs, like most of us I don't know a thing about Roofing so from day one I could say thy took me by the hand and explained it all to me and at the end I have a beautiful new Roofs and a couple of new friends, thank you guys for everything.”
-Joel L.
(via Google Review)
“Very good experience from start to finish. Our sales person Anthony was very thorough and provided a great price for roof replacement that met our budget. On the day of install, the crew worked very efficiently. We had to contact the owner regarding a concern we had and someone come out the very next day to relieve our concern. We are very satisfied with our new roof.”
-Nadine L.
(via Google Review)
“DZ Renovation did an excellent job replacing my roof. They worked within my budget and were able to move up the installation date when I told them I was on a tight time-line. They may not be able to do that for everybody but I was pleased that they even tried to accommodate. They showed up on schedule and left my lawn free from debris. Would definitely use them for my next project.”
-Bobby F.
(via Google Review)
“We found DZ Renovations at the Frederick Home Show. Joe came to the house and provided us with samples and we found what we had been looking for that would provide us with a stable product that would provide is with additional insulation and a lifetime of ware. [...] We highly recommend DZ Renovations for your next project as I know we will be returning.”
-Barry T.
(via Google Review)
“DZ Renovation did an awesome job on the roof replacement for our home! Our roof sustained some hail damage and they provided a reasonable estimate. After doing some research and comparisons, we decided to go with DZ Renovation over the other two companies that provided higher estimates. The DZ team arrived as scheduled and was very professional. My husband and I are very pleased with the work performed and the results.”
-Tanya B.
(via Google Review)
“Our entire experience with DZ Renovations was stellar. We had a very bad experience with a prior contractor so we are very wary/picky but Nick impressed us right away with his professional and easy going demeanor. He takes the "sales" out of salesman- felt more like a conversation with a friend and he was beyond wonderful to work with, returning calls and msg right away, keeping us informed and answering TONS of questions, which I def had, and accommodated last minute changes.”
-Cynda S.
(via Google Review)
Our Commitment to Excellence
Dedicated to Quality and Customer Satisfaction
At DZ Renovation, excellence is at the core of everything we do. We take pride in delivering superior craftsmanship and outstanding customer service with every project, ensuring your complete satisfaction. Our commitment to quality means using the best materials, employing skilled professionals, and maintaining open communication throughout the entire process.
- Superior Craftsmanship: Skilled professionals delivering exceptional results.
- Quality Materials: Only the best materials used for lasting durability.
- Customer Focused: Open communication and personalized service for your peace of mind.
- Satisfaction Guaranteed: We stand behind our work and ensure your complete satisfaction.
Why DZ Renovation?
100% Satisfaction Guarantee
We back every project with a 100% satisfaction guarantee, including a one-year workmanship guarantee, ensuring peace of mind and long-term quality.
Fully Licensed & Insured
As a fully licensed and insured contractor, we provide reliable and professional services, safeguarding your home and investment.
Dependable & Trustworthy
Our team is known for being dependable and trustworthy, consistently delivering on promises and exceeding expectations.
Honest & Fair Pricing
We’re proud to offer competitive pricing and excellent value, respecting your budget as much as our craftsmanship.
Proudly Serving Homeowners Across Maryland
Our Service Area
DZ Renovation works with homeowners all across Maryland. Chances are, we’ve completed siding, roofing, window, or other exterior renovation work right in your neighborhood.
We frequently work in:
- Anne Arundel County
- Baltimore County
- Calvert County
- Carroll County
- Charles County
- Frederick County
- Harford County
- Howard County
- Montgomery County
- Prince George’s County
- St. Mary’s County
Don’t see your area listed? Give us a call at (301) 479-0459 to discuss your project and find out if we service your community.
FAQ
What types of replacement windows do you install?
We install a wide selection of replacement windows designed to fit any style or budget. Our team offers high quality windows in popular options like double-hung, casement, picture, and bow window designs. Every product we use is chosen for its durability, energy efficiency, and lasting beauty. Whether you’re upgrading a single room or your entire home, DZ Renovation makes it easy to find the right windows for comfort, style, and performance.
How do professionally installed windows improve my home?
When your new windows are professionally installed, you’ll notice the difference right away — tighter seals, smoother operation, and better insulation. Our professional installers ensure every frame is level, secure, and properly sealed to prevent drafts. The result is improved comfort, quieter rooms, and lower utility bills thanks to better energy efficiency. Proper installation also protects your manufacturer warranty and ensures your windows and doors perform at their best for years to come.
Do you replace doors along with new windows?
Yes — many homeowners choose to update front doors or patio doors at the same time as their new windows for a cohesive look and better performance. Coordinating your windows and doors together improves curb appeal and boosts your home’s insulation. Whether you’re interested in sliding glass doors or elegant entry systems, we’ll help you find designs that fit your home’s architecture and budget perfectly.
How long does it take to install replacement windows?
Most replacement window projects take just one or two days, depending on how many openings you’re upgrading. Because DZ Renovation is a locally owned company, we plan every step carefully — from the first measurement to final cleanup — to minimize disruption. Our crews work efficiently, treating your home with respect and ensuring each window is finished to perfection. You’ll enjoy improved comfort, natural light, and peace of mind that comes with expert installation.
How can I get design ideas or see examples of your work?
If you’re exploring design ideas or want to see our craftsmanship up close, check out our photo gallery for inspiration. You’ll find real projects featuring windows and doors we’ve installed across Maryland homes — from classic styles to modern upgrades. We also offer helpful resources to guide you through choosing new windows, front doors, and patio doors that suit your space. Every project is planned with precision, installed by pros, and backed by results that elevate your home inside and out.
Let’s Discuss Your Project