Contractor serving St. Charles County, MO
St. Charles County is our home county — every city, village and unincorporated area in it is inside our service radius.
Building in St. Charles County
We work in St. Charles, St. Peters, O'Fallon, Cottleville, Wentzville, Lake Saint Louis, Dardenne Prairie, Weldon Spring, New Melle, Defiance, Augusta and the unincorporated areas between them.
Every St. Charles County project runs the same way: a free on-site walk, an itemized written scope, permits handled by us, one crew accountable from demo to final walk, and a schedule you have in hand before we start.
Call (314) 330-2750At a glance
- County
- St. Charles County
- State
- Missouri
- From our shop
- home county
- Estimates
- Free, on site
Our services in St. Charles County

Decks in St. Charles County
Composite and cedar decks, covered structures and railing.

Fences in St. Charles County
Vinyl, cedar and aluminum fencing set to line, plumb and grade.

Patios & Hardscape in St. Charles County
Stamped concrete, paver patios, walkways and retaining walls.

Bathroom Remodels in St. Charles County
Full gut bathroom renovations with waterproofed showers and tile.

Kitchen Remodels in St. Charles County
Cabinetry, counters, flooring, lighting and layout changes.

Egress Windows in St. Charles County
Code-compliant basement egress cuts, wells, covers and drainage.
Frequently asked questions
Do you work in unincorporated St. Charles County?+
Yes. Unincorporated parcels are permitted through the county rather than a city, and we handle that submittal.
Which St. Charles County cities do you cover?+
All of them within our radius, plus the surrounding unincorporated areas.
Does Benchmark Structures serve St. Charles County?+
Yes. St. Charles County sits inside our service radius, measured from our shop on Merryfield Circle in St. Charles, Missouri, and we build there regularly.
What does Benchmark Structures build in St. Charles County?+
Decks, fences, patios and hardscape, bathroom remodels, kitchen remodels and basement egress windows — the full list, with the same crews and standards everywhere we work.
Is the on-site estimate free in St. Charles County?+
Yes. We come out, measure, talk through options and send an itemized written price. There is no charge and no obligation.
Who pulls the permits for work in St. Charles County?+
We do. Depending on the address that is either the local building department or St. Charles County, and we handle the submittal and the inspection scheduling.
