DC Historic District
Notable Project — Embassy of Portugal, DC
Window Planning & Specifications
We manage every phase of historic window replacement: sourcing compliant products, navigating HPO and HPRB approvals, and coordinating expert installation. Zero bureaucratic headache.
DC's historic preservation process is one of the most exacting in the country. Homeowners face a labyrinth of HPO staff reviews, HPRB board hearings, product specification requirements, and installation standards that most contractors simply don't understand.
Capital Historic Windows has been assisting homeowners facing these exact challenges. We handle the entire project, from identifying compliant windows to filing permits to overseeing installations so you never navigate that process alone.
We evaluate your existing windows, identify your historic district classification, and determine the exact HPO or HPRB pathway required.
We source windows meeting DC's preservation standards, with products pre-vetted for HPO approval to avoid costly rejections.
We prepare and file your complete permit package and liaise with the preservation office through approval.
Our project managers coordinate installations, conduct compliance inspection, and close out all permits.
We specialize in DC's historic preservation process, from HPO administrative approvals to full HPRB board review. If your property is in a protected district, we know exactly what it takes to get your windows approved and installed correctly.
HPO · HPRB · All DC Historic DistrictsMHIC licensed for full project management across the DC metro area and Baltimore. We serve historic communities and high-end residential properties throughout Montgomery County, Prince George's County, and the Baltimore area.
MHIC Licensed · Montgomery · PG County · BaltimoreGeneral contractors take on window jobs. We are built exclusively for the intersection of historic compliance and premium window replacement. That focus is the difference between a smooth approval and months of back-and-forth with the preservation office.
We know DC's historic preservation process from the inside: the documentation required, the products they approve, and how to move your application through efficiently.
Our portfolio includes the Embassy of Portugal in Washington, DC, a project requiring the highest level of historic compliance and precision.
Our supplier relationships give us access to windows already familiar to DC's review process, dramatically reducing rejection risk.
DC Home Improvement Contractor licensed. Fully insured. Every installation contractor in our network is independently licensed and carries their own liability coverage.
From initial assessment to final permit closeout, you work with one project manager who owns every detail and keeps you informed at every stage.
A straightforward project management fee. No markups buried in contractor invoices, no surprise costs. All pass-through expenses shown clearly upfront.
Full wood, wood with aluminum cladding, aluminum, and vinyl. Every product matched to your district's preservation requirements and your property's architectural character.
Reach out directly or submit a full project intake and we'll follow up within one business day.
Submit your project details using our intake form. Include photos of your existing windows and we'll come back to you with a clear plan and timeline.
Submit Project Intake →