Washington, DC
NEW ADDITIONS ESTIMATING.

## Additions in Washington, DC Move Slow Until You Win the Bid Fast DC homeowners don't have room to build out. They build up — rear additions, pop-ups, and bump-outs in Capitol Hill rowhouses, Petworth bungalows, and Cleveland Park colonials. The demand is real. The permit process is not forgiving. Addition contractors here deal with Historic Preservation Review Board approval, DC Zoning Regulations Title 11, and DCRA building permits before a single footing is dug. That layered approval stack means your scope-of-work document needs to be airtight the first time you submit — and your estimate needs to reflect real DC costs, not national averages. Estimate.Pro is built for that reality. ## From Walkthrough to Bid in 8 Minutes When you finish a site visit, open Estimate.Pro on your phone. The AR measurement tool — ONNX-assisted live AR on supported devices — captures the addition footprint, ceiling height, and wall runs directly. On older devices or photo imports, measurements are flagged as estimates so you never send a bid built on a number you can't defend. The AI scope generator reads your measurements and builds a line-item scope of work: demo, foundation, framing, insulation, MEP rough-ins, drywall, exterior cladding, and finish work. Every line is editable. You set the labor rates and material costs in your saved workspace. The system prices against what you actually pay, not a generic database. Median time from walkthrough to sendable bid: 8 minutes. ## DC-Specific Scope Items That Catch Contractors Off Guard Additions in DC carry costs that don't show up in national estimating guides: **HPRB and historic district review.** More than 30 percent of DC's residential stock sits inside a historic district. If you're working in Georgetown, Capitol Hill Historic District, or Anacostia Historic District, your addition design needs HPRB sign-off. Factor in architectural drawing costs, review timelines, and potential redesign rounds before you commit to a project schedule in your bid. **DC Zoning pop-up restrictions.** ZR Title 11 limits matter-of-right addition height in many RF zones to 40 feet or three stories, whichever is less. Rear addition lot occupancy rules vary by zone. A bid that doesn't account for a Board of Zoning Adjustment hearing is a bid that will lose money. **Geotechnical conditions.** Much of Ward 6 and Ward 7 sits on fill and river sediment. Foundation scopes for additions in those areas often require soil borings and engineered footings. Build that into your estimate as a conditional line item, not an afterthought. **Energy code.** DC enforces the DC Energy Conservation Code, currently aligned with IECC 2021. Additions trigger envelope compliance: R-49 attic insulation minimums, continuous exterior insulation requirements on new walls, and blower door testing on the new assembly. Your insulation and air-sealing line items need to reflect those numbers, not standard mid-Atlantic assumptions. ## How Estimate.Pro Handles the Multi-Trade Scope Additions span every trade. Estimate.Pro supports 25 trades in a single platform. When your addition scope includes an electrical panel upgrade, a bathroom rough-in, and HVAC extension, you build all three into the same estimate. No copying numbers between spreadsheets. No version-control problems when the client changes the bathroom location. For mechanical extensions, the app references Manual J load calculation methodology so your HVAC line items are defensible, not guessed. For electrical, NEC 2020 (adopted in DC) informs the panel and circuit scope logic. ## Sending the Bid and Getting Paid Estimate.Pro's Free tier lets you build and send bids with no platform fee on invoices and no credit card required to start. When you're ready to process payments through Stripe Connect, the Pro plan ($39/seat/month) applies a 3% platform fee. Elite ($79/seat/month) drops that to 0% and adds invoice exports and full Stripe Connect workflows — useful when you're running multiple addition projects with staggered draws. For crews running multiple estimators, the Crew plan covers your whole team at $399/month flat. ## DC Addition Contractors Win More Work When the Bid Comes First In a market where homeowners get three bids and historic district projects can stall for months, the contractor who delivers a clean, professional, fully-scoped estimate the same day as the walkthrough creates a real advantage. Estimate.Pro is how you do that.