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BidFlow Auto-Capture wearable device — capture voice, organize instantly, update your project

Hire the AI that will manage your projects for you.

Auto-Capture is an upcoming BidFlow feature that turns voice notes into organized project updates.

Just speak what happened, and BidFlow will turn it into tasks, context, and clear next steps.

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Home Addition Cost Calculator

Estimate what it costs to add square footage to your home - by room type, size, and finish level

The AI Wearable for Construction

Contractors, your projects now document themselves.

The AI wearable captures your site walks, logs your scope changes, and gives you your evenings back.

Join the waitlist. Get the $179 hardware free at launch.

Live estimate

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Framing & Roofing--
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Cost per Sq Ft--
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Free Bid-Ready Kit

Get your full cost breakdown, scope checklist, and price ranges sent to your inbox. Bid the job without second-guessing the numbers.

  • Client-ready estimate PDF
  • Cost breakdown - labor, materials, permits
  • Price range: low, mid, high scenarios

How to Estimate Home Addition Costs Per Square Foot

Home additions are the highest-cost residential projects per square foot because they require foundation work, structural integration with the existing building, and full mechanical system extensions. The cost per square foot varies wildly - a simple bump-out over an existing foundation runs $150–$250/sf, while a two-story addition with a new foundation can hit $300–$500/sf or more depending on finishes and structural complexity. The gap between those ranges is not finish level - it's what happens below grade and at the structural connection point. Estimators who only price the above-grade work are setting up a budget failure before the first shovel goes in.

Read the full 5-minute guide