Market Insights  /  Fishtown
Development Watch · Fishtown

439-45 W Berks StCleared to build

18-unit residential new construction, zoned CMX2.

A four-story, 18-unit residential building is cleared to build at 439-45 W Berks Street in Fishtown, where Acc Bulders LLC has assembled a 5,233-square-foot site. The structure will sit on CMX2 zoning and include four affordable units, ground-floor commercial space fronting the street, and a roof deck accessed by a pilothouse. The project will be fully sprinklered and requires separate mechanical, electrical, plumbing, and fire-protection permits before construction can advance.

Acc Bulders picked up the parcel in 2021, and the by-right CMX2 envelope allows the four-story configuration without variance. The ground-floor retail—requiring its own use registration—adds a mixed-use element uncommon in some of the smaller apartment projects dotting the neighborhood. The rooftop amenity and modest scale suggest this is aimed at renters looking for newer stock in an area still transitioning from light industrial and commercial uses.

This project joins roughly 450 units planned or underway within a half-mile, including an 89-unit building at 1832 Germantown Avenue and a 33-unit development at 300 W Norris Street. Smaller infill projects—eight units at 1850 N Leithgow, nine at 1941 N Marshall—round out the pipeline, confirming that developers see demand for a range of scales along Fishtown's western edge. The density here remains uneven, with older single-story commercial and vacant lots still holding on between newer mid-rises.

For owners of similar CMX2 parcels nearby, 439-45 W Berks offers a clear template: four stories, ground-floor activation, and a mix of market-rate and affordable units all achievable by-right. As the neighborhood's residential base thickens, these underused industrial strips are likely to see more of the same, particularly where lot dimensions and zoning align as cleanly as they do here.

📄 View the project's plan drawings (PDF)
Schematic massing — illustrative of the ~4-story by-right envelope, not the developer's design.
Units
18
Zoning
CMX2
By-right envelope
~4 stories
Lot
5,233 sq ft
Last sale
$75K · 2021
Cleared to build
Mar 10, 2026
For developers & investors

Underpriced parcels near this project

As this density arrives, InvestPHL is tracking 138 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.

~338buildable units
████████ Street
ICMX · 0.38 mi away
Max bid to a builder $7.1M · Opportunity Score 98
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~239buildable units
████████ Street
CMX2.5 · 0.38 mi away
Max bid to a builder $4.6M · Opportunity Score 98
Unlock →
~190buildable units
████████ Street
ICMX · 0.19 mi away
Max bid to a builder $4.0M · Opportunity Score 94
Unlock →
~179buildable units
████████ Street
ICMX · 0.46 mi away
Max bid to a builder $3.4M · Opportunity Score 94
Unlock →
~122buildable units
████████ Street
IRMX · 0.38 mi away
Max bid to a builder $2.5M · Opportunity Score 93
Unlock →
Unlock the 138 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.

8u1850 N Leithgow St0.06 mi
89u1832 Germantown Ave0.09 mi
33u300 W Norris St0.15 mi
9u1941 N Marshall St0.16 mi
8u2059 Germantown Ave0.21 mi
285u1901 N American St0.23 mi
200u1635 N 5th St0.28 mi
13u1935 N 2nd St0.29 mi
Progress

How this project is moving

In permitting ~18% 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.