St. Louis, MO
NEW ADDITIONS ESTIMATING.

## Estimating Additions in St. Louis Takes More Than a Spreadsheet St. Louis sits on expanding clay and glacial till. That soil moves. Every addition you bid in Maplewood, Kirkwood, or Webster Groves has to account for foundation continuity, lateral loads, and the likelihood that the existing slab or footing wasn't poured to current IRC standards. If your estimate doesn't price that uncertainty in, you eat it. The region also spans two counties — St. Louis City and St. Louis County — plus satellite jurisdictions like Florissant, Chesterfield, and Ballwin, each running its own permit desk. Fees vary. Timelines vary. An addition that gets a permit in 10 business days in Chesterfield can sit six weeks in the City. Knowing that going in changes what you charge for carrying costs. Estimate.Pro is built for contractors who work in exactly this kind of fragmented market. ## From Walkthrough to Sendable Bid in 8 Minutes You walk the site. You open Estimate.Pro on your phone or tablet. The AR measurement tool — powered by ONNX-assisted live detection on supported devices — captures room dimensions as you move through the space. On older devices or photo submissions, measurements are flagged as estimates so you know the confidence level before you commit to a number. The app then generates a scope-of-work draft based on what you recorded. You review it, adjust line items, and apply your saved material cost workspace — your actual supplier pricing from Friedman's, 84 Lumber, or wherever you source locally. The bid goes out in one step. Median time from first measurement to a client-ready estimate: 8 minutes. ## What the Addition Scope-of-Work Covers For a standard room addition in St. Louis, Estimate.Pro walks you through: - **Foundation work** — footing depth to Missouri frost line (minimum 30 inches), pier vs. continuous footing selection, drainage slope away from existing structure - **Structural framing** — header sizing per IRC Table R602.7, load path continuity to existing bearing walls - **Mechanical tie-ins** — HVAC load calculation notes keyed to Manual J methodology, electrical panel capacity review per NEC 2020 as adopted by Missouri - **Envelope** — insulation R-values per Missouri's Climate Zone 4 requirements under IECC 2021 - **Finish schedule** — line items for drywall, trim, flooring, and paint that you can price against your own cost data Nothing in the scope is locked. Every line is editable. You know your subs and your market better than any software does. ## Permit Fees and Carrying Costs Matter Here St. Louis City calculates residential addition permits as a percentage of declared project value — typically around 1.5% to 2% of construction cost for projects over $10,000, plus plan review. St. Louis County municipalities set their own schedules; many charge a base fee plus a per-square-foot rate. When you build your estimate in Estimate.Pro, you can add permit fees as a direct line item and adjust markup independently. That means the permit cost doesn't silently compress your margin. ## Pricing That Doesn't Penalize Growth Estimate.Pro runs on three paid tiers and a free-forever tier that requires no credit card. - **Pro** — $39 per seat per month. Core estimating, AR measurement, scope-of-work generation. - **Elite** — $79 per seat per month. Adds Stripe Connect invoicing with 0% platform fee, invoice exports, and advanced workflows. - **Crew** — $399 per month flat. All seats, all features, one price. Built for shops running multiple crews across City and County jurisdictions. On the Free tier, Stripe Connect payments carry a 3% platform fee. On Pro and above, that fee drops to 0%. ## Built for 25 Trades, Calibrated for Addition Work Estimate.Pro supports 25 trades. Addition contracting sits at the intersection of several — framing, concrete, HVAC, electrical, roofing. The app lets you build a multi-trade estimate in a single document rather than stitching together bids from separate tools. If you GC the whole addition, that matters. ## Start Without Committing Create a free account, run a real estimate on a real job, and see the output before you put in a card number. If the numbers look right and the time savings are real, you'll know. If not, you're out nothing. St. Louis has enough variables on every addition job. Your estimating software shouldn't add more.