Market Insights  /  Wynnefield
Development Watch · Wynnefield

920 N 51st StDelivered

30-unit residential new construction, zoned RM2.

A 30-unit residential building is set to rise at 920 N 51st St in Wynnefield, the kind of by-right infill quietly reshaping the block. It was cleared to build in Aug 29, 2021.

The 25,329 sq ft site is zoned RM2, which supports a building on the order of 3 stories by right. The parcel last changed hands in 2022. The plans call for for the erection of a detached structure used as multi-family household living [30 dwelling units] with accessory parking spaces, community room, roof deck and utilities as per approved plans. building to be fully sprinklered. separate permits required for m.e.p.s work. separate approval from pa l&i required for elevator installation.

The owner of record is West Mill Place LP. The project's plan drawings are on file — worth a look for anyone underwriting the surrounding block.

It isn't rising in isolation. Within a half-mile, 2 other major projects have broken ground since 2022 — roughly 39 units of new supply — including the 31-unit project at 625 N 53rd St, the 8-unit project at 5137 Master St. That kind of concentration is exactly what pulls land values, and buyer attention, toward a block.

We'll update this page as the project progresses — leasing, retail tenants, renderings, and construction milestones as they surface. The relevant question for investors and agents: what are the surrounding parcels worth to a builder now that this is coming?

📄 View the project's plan drawings (PDF)
Schematic massing — illustrative of the ~3-story by-right envelope, not the developer's design.
Units
30
Zoning
RM2
By-right envelope
~3 stories
Lot
25,329 sq ft
Last sale
2022
Cleared to build
Aug 29, 2021
For developers & investors

Underpriced parcels near this project

As this density arrives, InvestPHL is tracking 134 under-built parcels within a half-mile that a developer could still acquire and build — each carrying a builder's max bid. Addresses and figures are members-only.

~208buildable units
████████ Street
CMX2 · 0.41 mi away
Max bid to a builder $3.3M · Opportunity Score 96
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~139buildable units
████████ Street
RM1 · 0.32 mi away
Max bid to a builder $2.0M · Opportunity Score 96
Unlock →
~207buildable units
████████ Street
ICMX · 0.41 mi away
Max bid to a builder $3.4M · Opportunity Score 95
Unlock →
~99buildable units
████████ Street
CMX2 · 0.39 mi away
Max bid to a builder $1.4M · Opportunity Score 91
Unlock →
~65buildable units
████████ Street
RM1 · 0.32 mi away
Max bid to a builder $935K · Opportunity Score 91
Unlock →
Unlock the 134 nearby opportunities →
The block

What else is rising nearby

Major (8+ unit) new-construction projects filed within a half-mile since 2022 — the density gathering around this site.

31u625 N 53rd St0.18 mi
8u5137 Master St0.40 mi
Progress

How this project is moving

Cleared for occupancy ~100% complete
Estimated from the construction permit sequence — an approximation of stage, not a precise schedule.
Every logged milestone appears here — highlighted ones are the headline stages; the rest track interim construction activity. Checked daily.
Compiled by InvestPHL. Unit counts, scope, and ownership are as recorded and subject to revision; the massing figure is a schematic illustration of the by-right envelope, not the developer's design or a marketing rendering. Verify zoning, status, and title with counsel before acting. InvestPHL does not list, market, or represent any property, buyer, or seller.