Philadelphia · Belmont · #CP-2024-000045
644-46 N 40th St, 10-unit building
644-46 N 40Th St, Belmont, PA · 10 homes, apartments
About this project
A new three-story attached building with ten dwelling units, fully sprinklered, in Belmont. The permit was amended to change the foundation to helical piers with a grade beam.
Official description: NEW CONSTRUCTION OF A THREE (3) STORY ATTACHED STRUCTURE FOR USE AS TEN (10) FAMILY DWELLING AS PER APPROVED PLANS. BUILDING TO BE FULLY SPRINKLERED PER NFPA 13. SEPARATE PERMITS REQUIRED FOR MEP & FIRE SUPPRESSION WORK. *2018 IBC REVIEW* *AMENDMENT 9/20/24 TO CHANGE FOUNDATION TYPE HELICAL PIER AND GRADE BEAM DESIGN.
- Applicant
- NORTH 40TH STREET LP
- Contractor
- Costanza Builders Inc
- Plan type
- Building permit (new construction)
- Land use
- R-2 Residential (>2 Dwellings)
- Status
- Permit completed
Filing history
- 2024-03-21 · #CP-2024-000045 · Building permit (new construction) · 10 lots/units
The full picture AI research · Nov 1, 2026
A new three-story apartment building with ten homes is planned at 644-46 N 40th St in Belmont, West Philadelphia. The county record says it is attached to its neighbors and fully sprinklered. A local news report puts it at roughly 12,800 square feet and 38 feet tall, at a cost of about $4 million.
The site was a vacant mid-block lot of about 5,700 square feet. The news report says no parking is proposed. Permits were issued in March 2024. A later change to the permit switched the foundation to helical piers (steel screw-like posts driven into the ground) with a grade beam (a concrete beam that ties the posts together).
No opposition, hearing or tenant information turned up online. The news report did not name an owner. It listed a different contractor from the one on the county filing.
What it could mean nearby
- Ten new homes would be added on a lot that was vacant.
- No off-street parking is proposed, so residents may park on the street or go without cars. Transit options are nearby.
- Construction activity on the block is likely while the building goes up.
Where it stands
Building permits have been issued, and the foundation change was filed in March 2024. Construction normally follows, with inspections and then a final certificate before people can move in. No public source shows how far the work has progressed.
- Mar 28, 2024 A local news outlet reported that building permits were issued for the 10-unit building.
- Mar 21, 2024 Latest county filing: the permit was amended to use helical piers with a grade beam.
Want to weigh in? Permits are already issued, so no public vote is expected. Residents can contact the City of Philadelphia Department of Licenses and Inspections about construction concerns, or their district council office.
Who's behind it
North 40th Street LP
Around the web
- Permits Issued for 644-46 North 40th Street in Belmont, West PhiladelphiaYIMBY · Mar 28, 2024Reports the three-story, 10-unit building, its size, its roughly $4 million cost, the lack of parking and the vacant lot it replaces.
Planning terms explained
- Helical piers
- Steel shafts with screw-like blades that are twisted into the ground to hold up a building's foundation.
- Grade beam
- A concrete beam at ground level that rests on piers or footings and carries the weight of the walls above.
- Attached building
- A building that shares one or more walls with its neighbors, like a row house.
- Sprinklered
- Fitted with automatic fire sprinklers throughout.
- Permit amendment
- A change to an already-issued permit, such as a different foundation method.
Researched by AI from public sources on Nov 1, 2026. It can make mistakes, so check the linked sources and the municipality before relying on it.
Scope estimate for contractors
Estimated construction value: $2.4M
- ~60 roofing squares
- ~10 HVAC systems
- ~10 kitchens / 20+ bathrooms
- ~10,000 sq ft of finished living space