The DMV contains some of the most desirable pre-war housing stock in the country. The 1920s and 1930s Colonials and Tudors in Chevy Chase and Cleveland Park, the Federal row houses on Capitol Hill, the craftsman bungalows in Takoma Park, the 1940s brick colonials throughout Arlington and Alexandria — these homes were built with materials and craftsmanship that are genuinely difficult to replicate today. They're also expensive, complicated, and sometimes legally constrained when it comes to renovation. Here's how to navigate it without making costly mistakes.
Historic Districts vs. Historic Designation: Know Which You're In
Not all old homes are subject to preservation oversight, and not all preservation oversight is the same. In the DMV, there are two distinct situations. A home in a locally designated historic district — like Old Town Alexandria, Chevy Chase Village, or Capitol Hill in DC — may require approval from a Historic Preservation Review Board (HPRB) for exterior changes, including window replacements, additions, new siding, and sometimes even paint colors on street-facing facades. A home that's individually listed on the National Register of Historic Places may qualify for federal historic tax credits for income-producing properties, but does not typically restrict what you can do on your own home. Knowing which situation you're in before you plan anything is step one.
What Typically Requires Review — and What Doesn't
Interior renovations in most historic districts are not reviewed at all — you can gut and reconfigure the interior of a Capitol Hill row house without any historic review, as long as the exterior remains compliant. Exterior changes that typically require review include: replacing windows (especially with different materials or profiles), adding dormers or rear additions visible from a public street, changing roofing materials, and altering the front façade. The review process varies by jurisdiction — DC's HPRB, Montgomery County's Historic Preservation Commission, and Alexandria's Board of Architectural Review all have different procedures, timelines, and standards. Factor 60–90 days for review into your project schedule if you need approval.
Old Materials: What to Match, What to Upgrade
Original wood windows in pre-war DMV homes are often beautiful, well-proportioned, and worth repairing rather than replacing. A skilled carpenter can repair deteriorated wood sashes, add weatherstripping, and fit interior or exterior storm windows that dramatically improve thermal performance while preserving the original profile. Replacing original wood windows with vinyl replicas is almost always a downgrade in historic districts — both aesthetically and in terms of what reviewers will approve. For plaster walls, the decision depends on condition: original plaster with good bond is worth keeping; extensively cracked or bulging plaster is typically more cost-effective to replace with drywall in non-character spaces. Original hardwood floors almost always merit refinishing rather than replacement — the grain and character of old-growth oak is not available in new lumber.
Planning Additions on Historic Properties
Rear additions are generally the most feasible approach for adding square footage to a historic home — they're out of view from the street in most cases and thus easier to approve. The design standard most reviewers apply is "compatible but distinguishable": the addition should be consistent in scale and character with the original home but should also be readable as a later addition, not a seamless extension. That often means matching brick or siding color and material but using slightly different detailing. We work regularly in historic neighborhoods throughout DC, Maryland, and Virginia and know what the review boards in each jurisdiction are looking for.
The Hidden Infrastructure Problems to Budget For
Renovating a pre-war home almost always surfaces infrastructure issues that a newer home wouldn't have: knob-and-tube wiring that needs replacement, cast iron drain lines that have deteriorated, galvanized supply pipes with reduced flow, undersized electrical service, and in homes from the 1950s and 1960s, asbestos-containing materials in floor tiles, insulation, or pipe wrap. A thorough pre-renovation inspection by a qualified contractor is essential — not a standard home inspection, but a contractor walkthrough specifically assessing what the renovation will uncover. Budget a contingency of 15–20% of your project cost for a historic home, not the 10% that works fine on a newer house.
If you're planning a renovation on a historic property in Maryland, DC, or Virginia, we're glad to walk the home with you and give you a realistic picture of what's involved — including the review process if you're in a district. Reach out for a free, no-obligation consultation.