Market Insights  /  Northern Liberties
Development Watch · Northern Liberties

1238 Buttonwood StUnder construction

20-unit residential new construction, zoned RMX3.

A 20-unit residential building is set to rise at 1238 Buttonwood St in Northern Liberties, the kind of by-right infill quietly reshaping the block. It was cleared to build in Dec 9, 2021.

The 3,618 sq ft site is zoned RMX3, which supports a building on the order of 6 stories by right. Records show the parcel last traded in 2023 for $700K. The plans call for amendment 5:for the amendment of previously approved permit cp-2021-006862 to document panic hardware in electrical room as shown per approved plans. if field conditions vary contact design professional prior to the start of any work. separate permits to be obtained for all other work. amendment 4: for the amendment of previously approved permit cp-2021-006862 to document change in alleyway confguration for emergency escape and rescue for adjacent properties approved per bbs variance case no. mi-2023-001879 with the following provisos "corridor and exterior passageway under building as emergency egress with 2 hour fire rated walls and 3 hour rated ceiling. provide exit signs in corridor and passageway for exit to buttonwood street." all work to be done per approved plans. if field conditions vary contact design professional prior to the start of any work. separate permits to be obtained for all other work. amended 3 as of 11.3.2022: for revision of the foundation solution to a mat foundation system. amendment 2: for the amendment of previously approved permit cp-2021-006862 to document horizontal exit within the building with changes to layout as shown per approved plans. all work to be done per approved plans. if field conditions vary contact design professional prior to the start of any work. separate permits to be obtained for all other work. amendment 1: amend new construction permit no. cp-2021-006862 to include underpinning plans and details as per approved plans. original: for the erection of an attached six story building for use as the following: multi-family household living for 20 dwelling units with seven class 1a bicycle spaces, and six accessory parking spaces in underground private residence garage (one parking space is van accessible). structure to contain a common roof deck above the 6th floor level accessed by two roof deck access structures. building composed of two different construction types (type ia(basement-first floor lev.

The owner of record is Buttonwood Estate LLC. 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, 7 other major projects have broken ground since 2022 — roughly 349 units of new supply — including the 23-unit project at 1314-32 Spring Garden St, the 31-unit project at 326 N 12th St, the 119-unit project at 619-29 N Broad 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 ~6-story by-right envelope, not the developer's design.
Units
20
Zoning
RMX3
By-right envelope
~6 stories
Lot
3,618 sq ft
Last sale
$700K · 2023
Cleared to build
Dec 9, 2021
For developers & investors

Underpriced parcels near this project

As this density arrives, InvestPHL is tracking 186 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.

~86buildable units
████████ Street
CMX4 · 0.47 mi away
Max bid to a builder $5.9M · Opportunity Score 100
Unlock →
~114buildable units
████████ Street
CMX4 · 0.12 mi away
Max bid to a builder $8.0M · Opportunity Score 100
Unlock →
~98buildable units
████████ Street
CMX4 · 0.10 mi away
Max bid to a builder $6.7M · Opportunity Score 100
Unlock →
~79buildable units
████████ Street
ICMX · 0.47 mi away
Max bid to a builder $5.4M · Opportunity Score 100
Unlock →
~77buildable units
████████ Street
ICMX · 0.35 mi away
Max bid to a builder $5.3M · Opportunity Score 100
Unlock →
Unlock the 186 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.

23u1314-32 Spring Garden St0.08 mi
31u326 N 12th St0.17 mi
119u619-29 N Broad St0.23 mi
24u1315 Ridge Ave0.24 mi
81u225 N 13th St0.29 mi
20u689-95 N Broad St0.36 mi
51u217 N 9th St0.44 mi
Progress

How this project is moving

Life-safety systems ⚠ Status unclear — no recent activity
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.