Costen House
house museum in Pocomoke City
The Costen House is a historic U.S. home located at 206 Market Street, Pocomoke City, Maryland, United States. Dr. Isaac Thomas Costen built the house c. 1870s and members of his family lived there for over a century. Dr. Costen became the first Mayor of Pocomoke City. The house currently serves as The Isaac Costen House Museum.
The Costen House was listed on the National Register of Historic Places in 1975.
The Isaac Costen House Museum
The Isaac Costen House Museum provides information on the Costen family and how people in the area lived during 1870–1920. The grounds of the museum also includes The Hall-Walton Memorial Garden.
This brief starts where responsible research should: with the source description of “Costen House” as house museum in Pocomoke City. Everything that follows is an evidence route, not borrowed authority.
Why this record matters
The subject matters to the places & architecture register because the source frames it as house museum in Pocomoke City. Its deeper value depends on whether names, dates, institutions and citations support that framing.
Place names and jurisdictional language are key evidence: both can reveal earlier catalogue descriptions and overlooked record series. The source revision retrieved here is dated Aug 14, 2026. The linked authority identifier is Q5175098. Authority coordinates are 38.075, -75.568. 1 of 1 selected statements include explicit references; 0 carry qualifiers and 0 use preferred rank. The first chronological checks are 1975, 1870 and 1920.
Architectural summaries often privilege surviving fabric and can understate demolished phases, contested use or displaced communities. The lead is largely declarative, so disagreement and counter-evidence require a deliberate search beyond the opening account. Authority statements aid reconciliation but still require their own references, qualifiers and ranks to be checked.
How to read it
Treat names, boundaries and functions as historically changeable. Maps, plans, inventories and administrative records can clarify what the place meant at different dates.
- Historic place names
- Jurisdictional context
- Routes into maps and plans
Contemporary maps, plans, listed-building records, estate papers and the responsible local or national archive.
Three-step research path
- Establish the record: confirm the title “Costen House”, its source revision and the description used here.
- Expand the search: follow Costen House primary sources, Costen House archive and Costen research across catalogues and specialist indexes.
- Test the account: compare the strongest cited source with the responsible institution’s current record and note any disagreement.
Questions for further research
- Which source most directly establishes the central claim about “Costen House”?
- Which authority defined the place, boundary or structure at the relevant date?
- What physical evidence or contemporary plan supports the description?
Search terms from this dossier
This entry incorporates text from “Costen House” on English Wikipedia. Contributors are listed in the page history. Text is available under the Creative Commons Attribution-ShareAlike 4.0 License. Selected authority identifiers and statements are retrieved from Wikidata under CC0; their references and qualifiers remain part of the verification path.