Headquartered in New Castle County, Delaware, Landmark has offices located in New Castle and Dover and in Wayne, Pennsylvania to serve its clients throughout the mid-North Atlantic region.
Landmark takes pride in its excellent performance record in satisfying clients' needs for design quality, meeting schedules, and performing within both fee and desired construction budgets.
We can assemble and administer a multi-disciplinary team of specialist firms for projects requiring expertise outside of our area of practice, or provide services as part of a team of professionals assembled and led by an architectural firm or planning group.


