The One Window the Previous Owner Skipped
The listing said new windows. The inspection found the one in the back bedroom, or behind the garage, or over the stairs that never got done.
Reply within one business day. Or call / text 763-250-3621.
When the previous owner replaced all the windows but one, that last original window is a normal one-window job for JMB Builders. We find the brand and color of the newer windows, order the match or the closest current line, pull the old window, repair a soft sill, and trim it to read like the others. Twin Cities metro, priced per window with the window included. Photo reply within one business day, or a free in-home estimate.
- One leftover window is a welcome job
- Matched to the newer windows around it
- Priced per window, window included

It happens in a lot of houses. The last owner did the windows people see and skipped the hard one: the window over the stairs that needs a ladder inside, the one behind the shrubs, the odd size in the basement, the one in a room that was full of furniture that week. You bought the house, the inspector flagged it, and now it is the coldest spot in the house.
The job is the same as any single window with one extra step. We look at the newer windows first so the replacement matches them, not the old one. That means brand, color, glass and grille pattern, plus how the trim was done inside and out. If the newer windows are a line our supplier still orders, the new one goes in to match. If not, we pick the closest current window and show you where it differs before you sign.
The skipped window is often the one with the most rot, because it is the oldest and it was skipped for a reason. We check the sill and the framing under it at the measure. If the frame is sound, an insert works. If it is soft, the window comes out to the rough opening, the rot is cut out and replaced, and the new window goes in with a sill pan and flashing.
Get a written quote for this job
Three photos and a sentence is enough: a reply within one business day, or ask for a free in-home estimate. Or text the photos to 763-250-3621.
What you supply
- Photos of the old window inside and out, and of a few of the newer windows for the match
- Any paperwork or labels from the previous owner's window job, if the seller left them
- A photo of any brand sticker on the newer windows or their glass spacers
- Paint or stain color for new trim, or leave it primed
What JMB supplies
- A match check against the newer windows: brand, color, glass, grilles and trim style
- The window, custom ordered to match or in stock when a plain white size fits, through ABC Supply
- Removal of the old window and any old storm or combination unit on it
- Repair of a rotted sill or rough opening, shown in photos first
- Sill pan or flashing tape, shims, foam, sealant and exterior capping or trim
- Interior stops or casing cut to match the newer windows, primed and caulked
- Painting quoted as a separate line, or leave it primed and paint it yourself
- Photos of the finished window in your job folder
How it is priced: per window
Quoted in writing from your photos, with a reply within one business day. What moves the number:
- Whether the newer windows' line is still made or a close match is ordered
- In stock white vs. a custom ordered color, glass or grille pattern
- Rot in the sill or framing of the oldest window in the house
- Insert into the old frame vs. full frame to the rough opening
- Access: a stairwell, a second story or a window behind landscaping
- Trim matched to how the previous job was finished inside and out
If the seller left any window paperwork, send a photo of it. The brand and line name make the match firm and the quote quicker.
How long it takes
Half a day to a day on site, more if the sill is rotted. A matched window is usually custom ordered with the lead time written on the quote; a plain white in-stock size can go in sooner.
How your project works
- 1
Send photos, get a written quote
Send three photos of the space and a sentence about what you want. You get a clear, itemized reply within one business day. Prefer a look in person? A free in-home estimate is always an option.
- 2
Pick materials, or bring your own
We help you choose profiles and materials that fit the house and the budget, or match your existing millwork exactly — or you buy the door or trim yourself and we install it. Everything is confirmed before the crew is scheduled.
- 3
Clean, precise installation
The crew shows up on time, protects floors and furniture, and installs with tight joints and consistent reveals. Photos of the finished work go in your job folder.
- 4
Walkthrough and invoice
We walk the finished work with you. If anything is not right, we fix it before we call the job done. Then one invoice, paid by check or direct deposit — no card fees, no payment links.
Situations and options
Match the newer windows
The previous job's brand and line are still sold. The last window is custom ordered in the same color, glass and grilles, and trimmed the way the others were.
Closest current match
The previous job's line is gone or unknown. We pick the current window with the nearest frame width and color and show you where it will differ before ordering.
Full frame, rot repaired
The skipped window has a soft sill. It comes out to the rough opening, the rot is cut out and replaced, and the new window goes in with a sill pan and flashing.
The One Window the Previous Owner Skipped: questions, answered
Can you replace the one old window the previous owner did not do?
Yes. One window is a welcome job for JMB Builders, and this is one of the most common versions of it. We match the new window to the newer ones around it, not to the old one, and trim it to read the same. Send photos and we reply within one business day, or book a free in-home estimate.
How do I find out what windows the previous owner installed?
Check for a label on the frame or sash edge of one of the newer windows, or on the metal spacer between the panes. Permit records at the city often list the contractor and brand. Any paperwork the seller left in a drawer helps too. Send us a photo and we take it from there.
Why was one window skipped in the first place?
Usually access or size. Stairwell windows, windows behind a deck roof, odd basement sizes and windows in a room that was in use are the ones that get left. That also means the skipped one is often the oldest and the most rotted, so we check the sill at the measure.
Will the new window match the ones already replaced?
If the line is still made, closely: same color, glass and grille pattern, custom ordered to the opening. If the line is gone, we pick the nearest current match and tell you where it will differ, such as frame width or the shade of white, before you sign.
Is the last window in stock or custom ordered?
Matched windows are usually custom ordered, because the color, glass and grilles have to match a specific line, and the lead time for that is written on the quote. If the newer windows are plain white in a common size, an in-stock window may fit and go in sooner.
Should I fix the one window or wait and redo them all later?
Fix the one. If the other windows are recent and sound, there is no reason to replace them, and one soft sill lets water into the wall under it no matter how good the rest are. Matching the one window to the set costs far less than starting over.
Recent JMB work, from our job log
59 installs recorded across 30 Twin Cities communities since Dec 2025. Window and door installs for homeowners and the builders we work with. Counts come straight from our job log; no customer names.
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Read morePage reviewed October 25, 2026 · JMB Builders LLC, MN license BC809005 · All windows pages
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