Modern Pennsylvania mixed-use development at twilight — blackened steel, natural stone, cedar
Est. MMXXV · Pennsylvania

Building Communities
That Last.

Stone Development Group develops innovative residential, mixed-use, and commercial real estate — with a focus on affordability, quality craftsmanship, and long-term investment.

Workforce HousingMixed-UseCommercialHospitalityAdaptive ReuseInstitutional Capital
Workforce HousingMixed-UseCommercialHospitalityAdaptive ReuseInstitutional Capital
The Mark
Stone Development Group LLC

Strong Foundations. Lasting Communities.

Our Mission

We develop communities — not just buildings. Every project must leave the neighborhood stronger than we found it, deliver enduring returns to those who capitalize it, and be worth owning for generations.

Ryan Stone — Founder & Principal
In Development

Current Developments

Full Pipeline
01

Stone & Steel Community — Phase II

Pennsylvania

Design Development
125,000 - 200,000 GSF
Q3 2027
02

Millwright Row

Pennsylvania

PRE-DEVELOPMENT
150,000 - 180,000 GSF
Q2 2027
03

Foundry District

Pennsylvania

CONCEPT
250,000 - 300,000 GSF
Q4 2028
04

Basalt Yards

Pennsylvania

CONCEPT
265,000 - 315,000 GSF
Q1 2029
Why Stone Development Group

Institutional discipline.
Regional conviction.

We combine the underwriting rigor of a Fortune 500 developer with the relationships, speed, and local knowledge of a Pennsylvania operator. The result: assets that outperform, and communities that endure.

Collaborative

We build strong relationships and work together to achieve exceptional results.

Integrity

We do what's right, every time. Always.

Development Excellence

Thoughtful planning. Quality construction. Lasting value.

Community Focused

We create spaces that strengthen communities for generations.

The Process

A Repeatable System for Enduring Assets.

01

Sourcing

We identify overlooked parcels and mispriced opportunities across Pennsylvania — off-market, entitled, and adaptive-reuse.

02

Underwriting

Disciplined feasibility. Conservative rent, cost, and exit assumptions stress-tested against multiple market cycles.

03

Design

Architect-led design in steel, stone, and cedar — durable materials that hold their value for the life of the asset.

04

Construction

Fixed-scope GMP contracts with vetted regional builders. Weekly transparency to LPs and municipal partners.

05

Stewardship

We build to own. Long-hold operations, resident-first management, and reinvestment into the community.

Stone & Steel Community — flagship workforce housing
Featured Project

Stone & Steel Community

Our signature workforce housing community — 142,000 GSF of steel, natural stone, and cedar organized around a shared courtyard. A modern answer to Pennsylvania's most persistent housing challenge.

GSF
142K
Homes
184
Delivery
Q4 2026
Explore the Project
Investment Philosophy

We invest capital the way we would want ours invested.

Sponsor co-invest on every deal. Underwriting built on conservatism. Long-hold assets in submarkets we know by name. This is how institutional capital is meant to be stewarded.

Request Offering Memo
Capital Preservation

Downside first. Every deal must survive a recession before we discuss upside.

Long-Term Ownership

We build assets we intend to own for 20+ years. Materials, systems, and reserves reflect it.

Aligned Interests

Sponsor co-invest on every offering. We win when our partners win — never before.

Transparent Reporting

Quarterly LP letters, open books, and a direct line to the principal on every project.

Residents at a Stone Development Group community at dusk
Community Impact

Will this community be better because this project exists?

It is the first question we ask on every deal. If the answer is not a clear yes, we rethink the project until it is.

1,200+
Homes in Pipeline
$340M
Aggregate Development Cost
6
Pennsylvania Communities
100%
Locally Sourced Labor
Signature Work

Selected Portfolio

All Projects
Stone & Steel Community
Signature Workforce Housing

Stone & Steel Community

Pennsylvania

Foundry Square
Mixed-Use Development

Foundry Square

Pennsylvania

Ironworks Commons
Mixed-Use Community

Ironworks Commons

Pennsylvania

Contact

Let's build something
worth owning.

Whether you are a municipality with an opportunity, an operator with a site, or an investor seeking access to institutional-quality Pennsylvania development — we would like to hear from you.

Founder & Principal
Ryan Stone
123 Development Way
Reading, PA 19601