Montgomery County · Lower Gwynedd · MCPC #24-0218-005
BT 309 Development
321 NORRISTOWN RD, Lower Gwynedd, PA · 264 homes, 117,520 sq ft non-residential, mixed use · 24.1 acres
About this project
A mixed-use development on 24.1 acres in Lower Gwynedd along Norristown Road is proposed with 264 apartments in a 4-story building, a grocery store, retail shops, a restaurant, and an office building. The site will include a 412-space parking garage and surface parking, with native gardens, a bird sanctuary, trail networks, and preservation of an existing historic barn.
County planning commission: Supports, with comments
Issues raised: parking design does not incorporate green infrastructure or landscaping goals, circulation prioritizes vehicles over pedestrian movement, insufficient pedestrian connections to Norristown Road and surrounding properties, limited external linkages to broader township transportation networks
- Applicant
- BT 309, LLC
- Zoning
- MF-3
- Approvals needed
- conditional use
Filing history
- 2026-08-03 · MCPC #24-0218-005 · Prelim Plan, Conditional Use, Resubmission · 264 homes · 117,520 sq ft
County review letters
2026-08-03 · LGWYN 24-0218-005r.pdf
Scope estimate for contractors
Estimated construction value: $178.4M
- ~8,448 roofing squares
- ~264 HVAC systems
- ~264 kitchens / 528+ bathrooms
- ~739,200 sq ft of finished living space
- ~293 roofing squares (assumes 4 stories)
- ~293 tons of cooling (rule of thumb 400 sq ft/ton)
- ~24.1 acres of site work (grading, stormwater, landscaping)
- Integrated 4-story parking garage with 412 spaces
- Underground stormwater management facilities beneath parking
- Native plantings and bird sanctuary
- Historic barn preservation
- Internal walking trail network