Window Replacement in Catonsville, MD

ENERGY STAR double-hung, casement, and bay windows with Low-E glass and argon fill for Catonsville homes — from the historic Victorians and Four-Squares off Frederick Road to the bungalows of Old Catonsville and colonials near UMBC.

Serving 21228 · 21229

5 ⭐⭐⭐⭐⭐· Google & Trustpilot reviews· MHIC #05-146983

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ENERGY STAR · Low-E + argon · historic sightlines matched · MHIC #05-146983

Energy-efficient replacement windows on a Catonsville, MD home by Apper Construction

5 ⭐⭐⭐⭐⭐· Google & Trustpilot reviews

Installed by our own local Maryland crew, MHIC #05-146983. Free written estimate.

Verified Google reviews

What Maryland homeowners say

⭐⭐⭐⭐⭐ Excellent Service, Professionalism, and Quality Work! I had an excellent experience with Apper Construction! From the very beginning, Leandro was professional, friendly, and attentive. He took the time to answer all my questions, explain the process, and provide clear information about the work and pricing. I contacted them regarding the installation of a roof vent for my bathroom exhaust fan, and I couldn’t be happier with the experience. I also want to recognize the technician who performed the installation. He did an excellent job, worked professionally, and made sure everything was properly completed. I truly appreciate his attention to detail and the quality of his work. What stood out to me the most was the excellent communication, honesty, professionalism, and dedication to customer satisfaction from start to finish. Thank you to Leandro and the technician for making this such a positive experience. I highly recommend Apper Construction to anyone looking for reliable service, quality workmanship, and a team that truly cares about its customers. I would definitely hire them again!

Niurka Yazmin Garcia Montesino

November 15, 2026

LeAndrue and his crew did exceptional work. I couldn't ask for a better experience. A + for a job well done. Highly recommended.

Preston Blake Jr

November 11, 2026

We were in need of a new roof and there was a time limit on it due to a horrible insurance company, you know the one that’s “on your side”, but they’re really not. I had at least four roofing companies come out and give me their speech like they do. For the fifth company, I dialed the wrong number that day and somehow by the grace of God a gentleman answered by the name of Leandro who owned a roofing and construction company. What are the chances? I Explained my situation and he came out the very same day to check out the roof which was 4,400 sq.ft. Mr. Leandro was so professional and answered all of our questions. Just listening to him speak about the procedure for a roof replacement was remarkable. Needless to say, he and his employees got the job! My roof was replaced even with new plywood, in one full working day. Mr. Leandro brought nine workers starting 7 AM and leaving around 6 PM. Once the Job was complete, you would’ve never known they had been there, which was so impressive. They had tarped everything, blew gutters out, and used a huge magnet to make sure there were no loose nails laying around. Throughout this whole ordeal, did I mention the price was very very fair! God Bless You Mr. Leandro and your hard-working employees!

Linda A

November 2, 2026

From first meeting until job completion Apper was responsive, punctual, and expertly professional: highly recommended for vinyl siding replacement. The company owner showed personal interest by doing the initial estimate, checking work progress, and asking my impressions as work progressed. The 5-man crew operated efficiently, with well orchestrated precision, completing the job with excellent results in 2-days. Apper Construction is the place to start for expert vinyl siding replacement at a fair price!

Thomas McDaniel

October 24, 2026

Strongly recommend Apper construction for any roof and exterior needs. Noticed a leak on Sunday, they were out on Monday to assess and give a quote. Leandro and his team were impressively thorough and they did a great job. Very thorough cleanup too!

Eric Taft

October 20, 2026

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Also in Catonsville:Gutters →Siding →All Catonsville services →

Few Baltimore County towns have a window challenge as varied as Catonsville's. The Victorians and Four-Squares along Frederick Road and through Old Catonsville still carry tall original wood sashes with divided-light grilles; the 1920s–1950s bungalows around Westview and Hilltop wear a mix of old wood and early aluminum; and the mid-century colonials near UMBC and Edmondson Heights run the single-pane and aluminum windows of their era. Across all of it, 21228 and 21229 homeowners feel the same problems — fogged glass from failed seals, sashes painted or swollen shut, drafts that make rooms cold in winter, and heating bills that climb because these older windows leak air at every joint. We install ENERGY STAR-rated windows built for the Maryland climate — double-hung, casement, and bay styles with Low-E coatings and argon gas fill that cut winter heat loss and block summer solar gain. On Catonsville's historic homes we take special care to preserve the look: we match sightlines, sash proportions, and grille patterns so a replacement window reads correctly on a Victorian or Four-Square rather than flattening its character. On the older homes full-frame replacement is often the right call because the aging wood frames have rotted, while sound openings on the mid-century colonials take a clean insert. We'll tell you honestly which your home needs and never push the more expensive route. Every window is installed by our own local crew and every opening is flashed and foam-sealed so air and water stay out for good, which is what actually delivers the lower BGE bills homeowners are after. We back the work with a written workmanship warranty on top of the manufacturer's glass and frame warranty, and on the historic homes we protect the surrounding trim and plaster during the swap. You get a line-itemed, per-window estimate before anything is scheduled, so the number you approve is the number you pay. As a family-owned company serving Catonsville and Baltimore County since 2016, we can phase a whole-home project across visits so owners in Old Catonsville, Hilltop, and Edmondson Heights spread the cost, and we're always glad to start with a single problem room to show you the difference before you commit to the rest. As a licensed window contractor in Catonsville, we handle full-frame window installation and replacement.

Most Catonsville window projects run about $650–$1,400 per window installed, with whole-home replacements typically $8,000–$26,000 depending on the number of windows, the style, whether historic grilles and custom sizing are needed, and full-frame versus insert installation. You get a written, line-itemed estimate before scheduling. Call 410-508-6141.

Windows in Catonsville — Common Questions

How much does window replacement cost in Catonsville, MD?

In Catonsville, replacement windows run about $650 to $1,400 each installed, and a whole-home project is typically $8,000 to $26,000. The number of windows, custom sizing and historic grilles on older homes, and full-frame versus insert installation drive the price. We put a line-itemed, per-window number in writing before scheduling.

Can you match windows on a historic Catonsville home?

Yes. On Catonsville's Victorians and Four-Squares we match sightlines, sash proportions, and grille patterns so a replacement window reads correctly on the home rather than flattening its character, while still giving you modern ENERGY STAR performance.

My old windows are foggy — what causes that?

That fog is a failed seal. On the aging aluminum and wood windows common across Catonsville's older housing stock, the seal between the panes breaks down and moisture gets trapped inside the glass. Once a seal fails it can't be repaired — the window has to be replaced.

Do I need full-frame replacement or inserts?

It depends on the frame. On Catonsville's older Victorians and bungalows the original wood frames have often rotted, which calls for full-frame replacement. Sound openings on the mid-century colonials take a clean, more affordable insert. We'll tell you honestly which your home needs.