Products and Services


Change is coming

Welcome to PreserveList, Preservation Maryland’s online preservation services directory. This website is currently under construction, but listings are still accessible.

PreserveList was developed to connect preservation service providers with customers that are looking to care for their historic structures.  After the site’s full relaunch on January 1, 2023, PreserveList will be a free service to all, both those looking for preservation services and those interested in listing their relevant services.

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Citadel DCA

Architectural History, Architecture & Planning, Strategic Planning

Citadel DCA is an award winning heritage architecture firm that specializes in preservation planning, oversight, peer review and adaptive reuse design. We are known for our ground breaking Historic Structure Reports, Building Preservation Plans and condition assessment reports. Citadel works with the country’s foremost architectural historians, conservators and craftsman to deliver clients appropriate and practical preservation solutions. Located in Washington DC, with a studio in Madrid, Spain, Citadel has consulted on projects in the US, Europe, the Caribbean and South America.

Locust Grove Plantation, Haldeman Mansion, Bainbridge, PA.