Breathing New Life into Aging Facilities:

A passion that drives all of our projects
from start to finish.

Offering extensive experience and talent in master-planning and design, Cornerstone Design-Architects specializes in creative and adaptive architectural designs for new construction, renovations, historical preservation, redesign, remodeling, and additions.


Proudly Designing in Pennsylvania, New York, Virginia, Ohio, North Carolina, New Jersey, Delaware, Maryland, and West Virginia.


Cornerstone Design Architects provides customized drawings, renderings, fund raising campaign materials and 3D walk through animations for churches, worship spaces, private schools, colleges, Christian educational facilities, auditoriums, classrooms, gymnasiums and fitness centers, dormitories, theaters, performing arts centers, healthcare facilities and medical office buildings, commercial and industrial buildings.


Cornerstone Design-Architects began as W.N. Marsh Associates Ltd. Architects in January of 1990, in affiliation with the Horst Group. In February of 1995, the company name was changed to Cornerstone Design Ltd. Architects. In January 1997, Dale R. Yoder, AIA, was named President.

In May 2007, a new chapter was started as Cornerstone Design-Architects underwent an ownership restructuring, with a goal of providing even more dedicated levels of client commitment. In November 2007, the firm moved its corporate offices to 48-50 West Chestnut Street, Lancaster PA. Today the story continues to grow. Cornerstone Design-Architects invites you to join us on our journey.



Dale Yoder
President & Principal Architect


Jeffrey Bohlen
Senior Associate Architect




Nick Martin
Project Architect


Ryan Griffith
Project Architect


Associates & Staff


Adam Todd
Draftsperson II


Ben Yoder
Business Manager / IT


Celesta Stauffer
Senior Draftsperson / Assistant Project Manager

Christy Yoder Web Design HR Cornerstone Design Architects Lancaster Pennsylvania Architect Firm

Christy Yoder
Web Design / Licensing / HR

Josh Yoder HR Business Development Manager Cornerstone Design Architects Lancaster Pennsylvania Architect Firm

Josh Yoder
HR & BD Manager


Karis Learn
Draftsperson I / Interior Design Assistant

Paige Jimenez Draftsperson Document Management Cornerstone Design Architects Lancaster Pennsylvania Architecture Firm

Paige Jimenez
Draftsperson II / Document Management


Michael Smith
Draftsperson I


Sherri Ross
Interior Design

Tim Yon Project Manager Cornerstone Design Architects Lancaster Pennsylvania Architect Firm

Timothy Yon
Project Manager

Zak Polett Project Manager Cornerstone Design Architects Lancaster Pennsylvania Architect Firm

Zachary Polett
Project Manager




Jarod Pletcher

College Intern