OAK Builders LLC is a licensed Class A general contractor serving Washington DC, Maryland, and Northern Virginia — commercial waterproofing & building envelope work, tenant improvements, renovations, government construction, and construction management, led by a PMP-certified principal with $133M+ of projects behind him.
Before founding OAK Builders, our principal managed projects for GSA, the Department of Defense at the Pentagon, and the Library of Congress. That standard of planning, documentation, and delivery now works for you.
Twelve services, one accountable team: from leak investigation and owner's representation to full general contracting and specialized laboratory and historic work.
Full-service commercial general contracting for offices, retail, medical, and institutional facilities across the DMV.
Learn more →Our dedicated waterproofing division protects buildings from the ground up — below-grade systems, plaza decks, façade sealants, and building-envelope restoration across the DMV.
Learn more →An independent advocate for condo/HOA boards and commercial owners: budget checks, bid leveling, pay-app and change-order review, and closeout.
Learn more →Office, medical, and retail interior build-outs and renovations — delivered on schedule in occupied buildings.
Learn more →Targeted repairs and small capital projects — envelope, concrete, structural, and interior — executed quickly and documented properly.
Learn more →Registered, compliant federal, state, and local construction — SAM-active, SWaM- and SBR-certified small business.
Learn more →Find the leak before it finds your budget — systematic building-envelope water intrusion investigation and repair.
Learn more →One contract, one team, one point of accountability — from concept through occupancy.
Learn more →Professional construction management — planning, logistics, phasing, and execution controlled by a PMP-certified team.
Learn more →Licensed-engineer evaluation and self-performed repair of structural issues — safely, and with documentation.
Learn more →Specialized laboratory and cleanroom construction — containment, pressure regimes, and compliance built in.
Learn more →Renovation and restoration that preserves what makes a building historic — and passes review.
Learn more →Every OAK proposal is a line-item document with explicit inclusions, explicit exclusions, and a real schedule — because that's how disputes are prevented and budgets are kept.
OAK Builders is registered, certified, and structured to contract with public agencies:
Send us your drawings or scope — we'll return a clear, line-item proposal with honest inclusions and exclusions.
Practical guidance on waterproofing, tenant improvements, and public-sector construction in the DMV.
November 2, 2026
How condo boards in Virginia, Maryland and DC turn a reserve-study line item into a scoped, bid and finished capital project — and why…
Read more →October 26, 2026
CM-agency vs CM-at-risk vs a GC with preconstruction: what commercial construction management means in Washington DC, what it costs, and when you need it.
Read more →October 19, 2026
How Maryland's Small Business Reserve works on construction in 2026: the $1M designation rule, size standards, 15-day payment, and what buyers must verify.
Read more →