Building ADUs in St. Charles
St. Charles is one of the largest planned communities in Maryland, and that planning cuts both ways for ADUs. The neighborhoods are well kept and the housing stock is consistent — but the HOA covenants in each village can restrict accessory structures, exterior changes, and even rentals.
The HOA-first approach
For St. Charles projects, we start with your HOA documents, not the county code. We read the covenants, flag anything that affects an ADU, and tell you honestly whether your plan is viable before you spend a dollar. If the HOA allows it, we then handle the county permits the same as anywhere else.
What works best here
- Garage conversions — interior work that barely changes the home's exterior is the easiest sell to an HOA board.
- In-law suites — attached additions that match the home's existing architecture tend to clear design review.
- Basement apartments — fully interior, invisible from the street, and often the path of least resistance.