This is the cheapest square footage you can add — if it is finished legally. We are a licensed contractor in Maryland (MHIC #111971) — we pull the permits through the Montgomery County Department of Permitting Services, coordinate the licensed trades, and hand you a written line-item scope before demolition starts.
A finished basement needs a building permit and, in almost every case, electrical, plumbing and mechanical permits alongside it. Two code requirements decide whether the space is legal: any room used for sleeping needs proper emergency egress, and habitable space needs a minimum finished ceiling height. The framing and rough-in inspection has to pass before insulation and drywall — get that wrong and the drywall comes back off.
Your Olney permit goes through the Montgomery County Department of Permitting Services. We pull it under our license and we hold the inspection schedule — you do not chase inspectors and you do not sign the application.
Olney sits at the edge of Montgomery County's water and sewer envelope, and properties beyond it are on well and septic. If your project adds a bedroom — a basement bedroom or an addition — septic capacity can govern whether it is permittable at all, since systems are sized by bedroom count. Parcels bordering the county's Agricultural Reserve also carry their own zoning constraints on what can be built.
Olney is mostly later-20th-century subdivision housing on generous lots, and most of those neighborhoods have an HOA with architectural review for exterior work.
What's includedA planning range, not a quote. Your written line-item price comes after a free on-site walkthrough. HVAC, electrical and plumbing are performed by licensed trade partners.
A written, line-item scope for your basement finishing project. No design fee, no obligation.
By submitting you agree United Developers may call or text you about your request, including by autodialed/automated means and AI voice, at the number provided. Consent is not a condition of purchase. Msg/data rates may apply. Reply STOP to opt out.
Our Olney crews cover Brookeville, Sandy Spring, Ashton, Rockville and every ZIP in the area — 20832, 20833.
Yes. United Developers is a licensed contractor in Maryland (MHIC #111971) and works throughout Olney and Montgomery County, including 20832, 20833 and nearby Brookeville, Sandy Spring, Ashton.
We do, under our license, through the Montgomery County Department of Permitting Services. A finished basement needs a building permit and, in almost every case, electrical, plumbing and mechanical permits alongside it. Two code requirements decide whether the space is legal: any room used for sleeping needs proper emergency egress, and habitable space needs a minimum finished ceiling height. The framing and rough-in inspection has to pass before insulation and drywall — get that wrong and the drywall comes back off.
Olney sits at the edge of Montgomery County's water and sewer envelope, and properties beyond it are on well and septic. If your project adds a bedroom — a basement bedroom or an addition — septic capacity can govern whether it is permittable at all, since systems are sized by bedroom count. Parcels bordering the county's Agricultural Reserve also carry their own zoning constraints on what can be built.
Most Olney projects land in the $32k – $100k range. That is a planning range for Montgomery County, not a quote — your written price comes after a free on-site walkthrough.
Yes. The walkthrough and the written scope are free and yours to keep whether or not you hire us. There is no design fee and no consultation invoice.
Only with proper emergency egress — that means a code-compliant egress window and window well, or a walkout. It is the single most common reason a basement bedroom fails inspection or gets flagged at resale. We settle it during design, before framing, because retrofitting egress into finished walls is expensive.