Ask Donnie.
The Oracle of building.
The construction consultant that knows the code for your city, county, and state — cites the exact section, estimates the job, and reads your plans. Built on Claude.
- Free to start
- No credit card
- $5 free credit
- Pay only for what you use
I'm a contractor / builder
Cited code research, jurisdiction-scoped, plus fast itemized estimates for the bid.
I'm a homeowner / DIY
Plain-language answers, cited to the source, and what to confirm with your AHJ.
7 feet (2,134 mm). Texas is on the 2012 IRC. Habitable spaces, hallways, bathrooms, toilet rooms, and laundry rooms must have a ceiling height of not less than 7 ft.
📑 2012 IRC §R305.1 — “…ceiling height of not less than 7 feet (2134 mm).”From a plan to a priced estimate — in seconds.
Drop in a floor plan or build the line items by hand. Confirm the quantities, set your region and contingency, and Donnie's deterministic engine returns a branded estimate — or invoice — as Excel or PDF. Same numbers every time.
Illustrative pricing · reproducible fingerprint · verify before quoting a client.
One expert. The whole job.
Donnie pairs Claude's reasoning with the real, adopted building code and a deterministic estimating engine — so the words are expert and the numbers are exact.
Knows your jurisdiction
Every state's adopted code edition — Alabama is on the 2015 IRC, Texas the 2012, California the 2021. Answers scoped to where you actually build.
Cites the exact section
Grounded in the public-domain code. Donnie quotes the verbatim section and links the source — not a guess, the actual rule.
Runs the numbers
Itemized cost estimates with regional pricing and exact arithmetic — material + labor, line by line, reproducible.
Reads your blueprint
Upload a plan or a site photo. Donnie reads the dimensions, applies the right code, and ties it to the estimate.
How it works
Three steps from a plain question to a cited answer.
Tell Donnie where + what
“Houston, TX — minimum ceiling height for a habitable room?”
Donnie pulls your adopted code
Resolves Texas → the 2012 IRC, finds the governing section, reads the verbatim text.
Get the cited answer — and the numbers
The rule quoted to the exact §, with a source link — plus an itemized estimate if you ask.
Start free. No card. $5 on the house.
Ask a building-code question or rough out an estimate right now. New accounts get $5 in free credit — no credit card — and you only pay for what you use after that.
Grounded in the public-domain IRC · cites the exact section· it's AI — verify before you build.