Hartford, CT
NEW ADDITIONS ESTIMATING.

## Addition Estimating Built for Hartford Contractors Hartford's housing stock is old. Most of it was built before 1960, and a significant share predates 1940. When a homeowner calls you about adding a family room, a master suite, or an in-law apartment, you're rarely starting with a clean slate. You're tying into balloon-frame walls, aging foundations, and mechanical systems that need to be brought up to current Connecticut State Building Code (2022 CTBC, based on IBC 2018) before the inspector will sign off. That complexity makes accurate scoping harder — and faster bidding more valuable. ### Why Addition Bids Go Wrong in Hartford The common failure points are not unique to Hartford, but the local versions of them are specific: - **Permit timelines.** Hartford's building department handles permitting for all trades under one roof, but plan review for additions with structural work routinely runs 4–6 weeks for residential projects. If your bid doesn't price carrying costs and a realistic start date, your number becomes inaccurate before the contract is signed. - **Existing condition unknowns.** Older homes in Frog Hollow, Blue Hills, and the North End frequently reveal knob-and-tube wiring, galvanized supply lines, and undersized electrical panels once walls open up. Your scope-of-work needs allowance line items, not assumptions. - **Subcontractor pricing pressure.** Hartford sits between two major metros. Trade subs — electricians, HVAC crews, and framers — price work against Boston and New York demand. You need real labor cost data, not national averages. ### What Estimate.Pro Does for Addition Contractors You start with a walkthrough. The app guides you through a structured site survey — existing footprint, proposed addition dimensions, structural tie-in points, mechanical scope. On supported devices, ONNX-assisted live AR measurement captures room dimensions. On any device, photo measurements give you calibrated estimates flagged as such. That walkthrough feeds directly into an AI-generated scope-of-work document. Line items include: - Demolition and existing wall removal - Foundation type (slab, crawl, full basement extension) - Framing labor and material by square foot - Rough mechanical — electrical, plumbing, HVAC - Insulation to meet CT Energy Code (2021 IECC as adopted) - Drywall, finish carpentry, paint - Permit allowance line item From walkthrough to a sendable bid: the median time is 8 minutes. Your material costs live in a saved workspace you control. Update framing lumber when prices shift at your local Builders FirstSource or ProBuild. The system does not hard-code costs you can't edit. ### Connecticut-Specific Scope Items You Should Not Miss **Energy code compliance.** Connecticut adopted the 2021 IECC. Additions over a certain conditioned square footage trigger whole-house compliance checks. Your bid should reflect blower-door testing if required and insulation upgrades beyond the addition footprint. **Zoning setbacks.** Hartford zoning varies by district. Rear and side setbacks in residential zones affect what you can actually build. A scope-of-work that doesn't note the zoning district and setback confirmation creates change-order exposure before the shovel hits the ground. **Radon mitigation.** Connecticut is a Zone 1 radon state under EPA mapping. If the addition includes below-grade space or a new slab, radon mitigation system rough-in is a line item worth including proactively. **Historic district review.** Portions of Hartford — including parts of West End — fall under historic district guidelines. Exterior changes require additional review. Build that into your schedule and note it in the scope. ### Pricing Tiers Estimate.Pro is free to start. No credit card required. The Free tier lets you run the full walkthrough-to-bid workflow. Pro is $39 per seat per month and removes platform limits. Elite at $79 per seat per month adds Stripe Connect invoicing with 0% platform fee and invoice export. Crew at $399 per month flat covers your entire field team. For addition contractors who run 2–5 jobs concurrently, the Crew tier typically pays for itself in the first bid cycle. ### Start Without Risk Create a free account, run your next addition walkthrough, and see the scope-of-work before you commit to anything. The bid is yours to edit, brand, and send. No locked formats, no surprise fees on the free tier.