What we see on LaSalle-Peru homes
69.1% of the housing in LaSalle-Peru predates 1970, and the largest single band of it went up between 1940 and 1970. 29.7% of it predates 1940, so a lot of these openings are out of square and none of them are a catalog size. That is the whole reason we measure every opening instead of ordering to a chart.
The exterior on a house that age is often not the first one. Aluminum siding from the sixties, vinyl over the top of it in the nineties, and somewhere underneath the wood the house was built with. We look behind the old material before quoting, so the layer count and the state of the sheathing are known rather than guessed at. In these houses the original single-glazed windows are usually the biggest single draft in the place. On windows specifically the number that matters is how many openings are actually costing you. We will quote the worst room on its own if that is the sensible place to start.
Housing-age figures: U.S. Census Bureau, American Community Survey 5-year estimates (table B25034), retrieved 2026-08-18.
Permits and paperwork in LaSalle-Peru
In LaSalle-Peru, work like this is permitted through City of Peru Building and Zoning Department. Whether yours needs a permit is a question of scope, and it gets answered before anyone starts. Pulling it is our job. So is being on site when the inspector comes.
We are licensed and insured. Our Illinois Roofing Contractor License is #104016978, and it goes on the paperwork before you ask for it.
Where we work from, and what is nearby
LaSalle-Peru, IL sits in LaSalle County, and we serve it from our Central Illinois office at 402 S. Main St., Creve Coeur, IL 61610.
In LaSalle-Peru that is 61301 and 61354. If your ZIP is not on that list, call anyway. The list is where we work most, not a fence.
What we can put on a LaSalle-Peru house
Elite Pro and Elite Pro Plus+ windows: vinyl frames, energy-efficient glass, and the full range of shapes: double-hung, casement, awning, slider, bay and bow, picture, garden and geometric. Interior woodgrains and UV-resistant exterior colors, grids in colonial, prairie or perimeter prairie, and obscure or rain glass where a bathroom or a street-facing window needs it. Every unit is measured to your opening rather than ordered as a size.
There is a showroom at 402 S. Main St., Creve Coeur, IL 61610. Color on a screen is not color in daylight, and a sample chip is not a panel, so it is worth the drive before you commit to either.
Free consultation
Book a free consultation in LaSalle-Peru
Choose a day and our Central Illinois office calls to confirm the time.
- A free consultation at your home
- A quote with no obligation
- Our office calls to confirm the time
Two things people in LaSalle-Peru ask
Do I need a permit for this in LaSalle-Peru?
It depends on the scope, and City of Peru Building and Zoning Department is the office that decides. We check before the crew is booked and we pull the permit when one is needed, so it is never something you find out about halfway through.
How far are you from LaSalle-Peru?
Our Central Illinois office is at 402 S. Main St., Creve Coeur, IL 61610, about 1 and a half hours away, up I‑39 and US‑51. That is a drive time and nothing more: we do not publish arrival windows, so ask for a date and you will get a real one.

