Philadelphia · Mantua · #CP-2025-006525
3725 Mount Vernon St
3725 Mount Vernon St, Mantua, PA · 19 homes, apartments
About this project
Three-story attached building with a roof deck at this Mantua address, to be used as 19 dwelling units and fully sprinklered.
Official description: FOR THE ERECTION OF A THREE (3) STORY ATTACHED STRUCTURE WITH ROOF DECK AS PER APPROVED PLANS. FOR USE AS NINETEEN (19) DWELLING UNITS. STRUCTURE TO BE FULLY SPRINKLERED IN ACCORDANCE WITH NFPA 13R MINIMUM. **SEPARATE PERMITS REQUIRED FOR MEP AND FIRE SUPPRESSION WORK.** **2018 IBC**
- Applicant
- 42ND MARKET ASSOCIATES LLC
- Contractor
- YONA CONSTRUCTION LLC
- Plan type
- Building permit (new construction)
- Land use
- R-2 Residential (>2 Dwellings)
- Status
- Permit issued
Filing history
- 2026-10-26 · #CP-2025-006525 · Building permit (new construction) · 19 lots/units
The full picture AI research · Nov 1, 2026
County records show a proposed three-story attached apartment building at 3725 Mount Vernon St in the Mantua neighborhood of Philadelphia. It would hold 19 dwelling units and have a roof deck. The records say the building would be fully sprinklered, meaning it would have a fire-suppression system throughout.
The filing lists two companies: 42nd Market Associates LLC and Yona Construction LLC. The most recent county filing is dated October 26, 2026.
No news coverage, hearing notices, meeting minutes or developer project page specific to this address were found. No public information turned up on opposition, approvals, or who would live there. The county records don't say what is on the site now.
What it could mean nearby
- The building would add 19 homes to Mantua, which could expand the local housing supply.
- A roof deck gives residents private outdoor space. The records don't mention any public open space.
- Traffic, parking, school and utility effects are not described in the available records.
Where it stands
A county filing was made on 2026-10-26, which suggests the project is in the permit or review stage. Next steps usually include plan review, any needed zoning approval, and then a building permit before construction starts.
- Oct 26, 2026 Latest county filing for the 19-unit apartment building
Want to weigh in? Philadelphia's Department of Licenses and Inspections reviews permits, and the Zoning Board of Adjustment hears any variance requests. Residents can also contact the local registered community organization for the area.
Who's behind it
42nd Market Associates LLC (with Yona Construction LLC) · Yona Construction LLC is named as the contractor on several small apartment projects in West Philadelphia, and no information was found on 42nd Market Associates LLC.
Planning terms explained
- Fully sprinklered
- The building has an automatic sprinkler system covering all areas to control fires.
- Attached building
- A building that shares one or more walls with its neighbors, like a rowhouse.
- Dwelling unit
- A single home or apartment with its own living, sleeping, cooking and bathroom space.
- Roof deck
- An outdoor seating or recreation area built on top of a building's roof.
- Variance
- Special permission from the zoning board to depart from a rule in the zoning code.
We searched the web for this project but found nothing beyond the county record, so this explanation is based on the filing alone. 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: $4.6M
- ~114 roofing squares
- ~19 HVAC systems
- ~19 kitchens / 38+ bathrooms
- ~19,000 sq ft of finished living space