Regulatory intelligence for the built environment
AI Research for Building Codes, Zoning, and Local Regulations
Find answers across California building codes, municipal ordinances, county regulations, and local amendments — with citations you can verify.
Built for Architects, Builders, Contractors, Permit consultants, Development professionals.
See GoCodebook in action
13
parts of the California Building Standards Code (Title 24) covered
475
California municipalities with local ordinance coverage — and growing
12.6 million
of zoning and parcel information you can trust in California
The problem
Regulatory Research Is Fragmented
A single building or permitting question can span the state building code, county rules, municipal ordinances, local amendments, zoning, and planning documents — each in its own PDF, website, or code book. Most tools only search one of them at a time, so professionals spend hours cross-checking sources just to confirm one requirement.
The deeper problem
You Can't Trust Generic AI Answers
General AI tools confidently invent code sections and rarely cite a verifiable source. To be safe, you end up re-checking every claim against the original code — which erases the time the tool was supposed to save.
Research Across Every Layer of Regulation
GoCodebook searches across the California Building Standards Code / Title 24, municipal ordinances, county regulations, local amendments, and planning requirements to return a single reconciled answer.
- Ask code and ordinance questions in plain English
- Search across state and local regulatory layers
- Connect building code, zoning, and amendment requirements
- Reduce manual cross-checking across multiple documents
Every Answer Includes Verifiable Citations
Every response includes the exact code section, ordinance reference, adopted edition, and jurisdiction used to generate the answer, so professionals can verify the source before relying on it.
- Exact section references
- Jurisdiction and edition details
- Source-backed responses
- Useful for plan check, RFIs, permit review, and design coordination
Generic AI search
GoCodebook
Illustrative example — verify the exact figure against the current CBC text for your project.
Share Answers With Your Entire Project Team
Without a shared source, answers get screenshotted into email threads and lose their citations. With GoCodebook, share any cited answer with a link — recipients do not need a login or account to open it. Architects, builders, contractors, inspectors, attorneys, city staff, and clients all review the same question, answer, and source together.
- Share cited answers by link
- No account required for recipients
- Keep project teams aligned
- Reduce repeated research and miscommunication
Try it on your next code question.
Start Free TrialBuilt for Development Professionals
Architects
Find applicable code and ordinance requirements before design decisions become expensive to change.
Builders & Contractors
Resolve code and permitting questions faster during preconstruction, construction, and inspection.
Permit Consultants
Research requirements efficiently and prepare stronger permit submissions.
Land Use Professionals
Find local regulatory requirements and cited authority across municipal ordinances and planning rules.
Current Coverage
Check coverageCoverage is deepest in California today and expands jurisdiction by jurisdiction. Local ordinance coverage grows continuously.
Local ordinance coverage is currently live for 475 California municipalities, concentrated in the San Francisco Bay Area, Silicon Valley, and the Los Angeles metro. Coverage expands continuously.
Building Codes
- California Building Standards Code / Title 24
- California-focused state code research
Local Regulations
- 475 California municipalities — and growing
- Municipal ordinances
- Local amendments
- Zoning and planning regulations where available
GoCodebook is expanding its jurisdiction library to additional states and municipalities, including New York, Texas, and Florida.
A Single Source of Truth for Development Regulations
We're building a unified research platform that connects building codes, municipal ordinances, planning requirements, and local amendments into one searchable system.
Cross-layer regulatory search
AI-assisted ordinance collection
Growing municipal coverage
Long-term regulatory intelligence database
A modern alternative
One answer instead of a dozen tabs
Today, professionals stitch answers together from code libraries and municipal code hosts — the International Code Council (ICC), UpCodes (up.codes), Municode (municode.com), American Legal Publishing (amlegal.com), eCode360 (ecode360.com), and General Code (generalcode.com) — alongside parcel and GIS data from Regrid and ArcGIS, and permitting tools like PermitFlow. GoCodebook is the AI research layer that reconciles those sources into a single, source-cited answer — so instead of opening six tabs and cross-checking by hand, you ask one question.
See how GoCodebook comparesWhy GoCodebook Is Different
| Traditional Research | Generic AI | GoCodebook |
|---|---|---|
| Multiple websites and PDFs | Fast but unverifiable | Cross-layer research with citations |
| Manual cross-checking | Hallucinations possible | Source-backed answers |
| Hours of work | No jurisdiction awareness | Jurisdiction-aware search |
| Difficult to share | No audit trail | Shareable cited answers |
Frequently Asked Questions
I already use ChatGPT. Why GoCodebook?
ChatGPT describes code in general terms, but it will not tell you which edition your jurisdiction adopted, and it sometimes invents section numbers. GoCodebook answers from the adopted code text and shows the exact source behind every answer.
How are citations verified?
Each answer references the specific provision in the controlling code or ordinance, labeled with its edition and jurisdiction, so you can read the original language yourself before relying on it.
Is my city covered?
GoCodebook covers the full California Building Standards Code (Title 24) statewide, plus local ordinances for 475 California municipalities today. The jurisdiction library expands continuously, with New York, Texas, and Florida coming next.
Is GoCodebook an alternative to UpCodes, Municode, or eCode360?
GoCodebook works differently from code libraries and municipal code hosts like UpCodes (up.codes), Municode (municode.com), American Legal Publishing (amlegal.com), eCode360 (ecode360.com) and General Code (generalcode.com), or publishers like the International Code Council (ICC). Those let you read one document at a time; GoCodebook reads across the adopted state code, local ordinances and amendments and returns one reconciled, source-cited answer — paired with the parcel and zoning data tools like Regrid and ArcGIS surface, and the permitting context of tools like PermitFlow.
Is this legal advice?
No. GoCodebook surfaces and cites the governing code so professionals can make informed decisions; it does not replace a licensed design professional, an AHJ ruling, or an attorney.
California regulatory research
Plain-English guides to the codes and regulations that decide what you can build.
Title 24 Building Codes
All 13 parts — CBC, CRC, Energy, Fire, CALGreen and more.
Housing & Tenant Laws
Rent control, AB 1482, evictions, the rent cap and ADU laws.
Zoning by City
Local zoning & building codes for 480+ California cities.
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GoCodebook vs ChatGPT, UpCodes, Municode, ArcGIS and more.
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