Official standard
CERTAFI+ Enhanced Building Standard
Tiny homes on wheels (THOW) · Version 1.0 · Effective January 1, 2026
This document defines how CERTAFI certifies THOWs: the plans gate, five inspection stages, required photos and live video, and CERTAFI+ technical requirements. It references NFPA 1192 (2015), ANSI A119.5, and NEC Articles 551 and 552; it does not replace local, state, or federal codes or permits.
What's in the PDF
- Introduction, scope, and limitations of CERTAFI+ certification
- Pre-step (plans) gate and required uploads
- Stages 1–5: purpose, checklist concepts, photo/video expectations
- Technical requirements (framing, mechanical, insulation, final, loft, wind)
- Certification rules: sequencing, locking, live video, outcomes
- Contact and referenced standards list
Stage overview
The app mirrors this workflow: approve Plans first, then complete each stage in order. Live video is required for stages 1, 2, 3, and 5; stage 4 is photo-based.
| Step | Name | Typical media |
|---|---|---|
| Pre-step | Plans submission | Documents + specifications |
| Stage 1 | Trailer and chassis | 7 photos + live video |
| Stage 2 | Framing and dry-in | 8 photos + live video |
| Stage 3 | Mechanical rough-in | 6 photos + live video |
| Stage 4 | Insulation and thermal | 4 photos |
| Stage 5 | Final inspection | 15 photos + live video |
Referenced standards & resources
CERTAFI+ points to these documents for baseline principles. Use the links for official publishers and background reading; CERTAFI+ may add stricter project-specific requirements.
Standard on Recreational Vehicles
https://www.nfpa.org/codes-and-standards/all-codes-and-standards/list-of-codes-and-standards/detail?code=1192
Park Model RV Standard
https://shop.iccsafe.org/
National Electrical Code — RV and park trailer articles
https://www.nfpa.org/codes-and-standards/all-codes-and-standards/list-of-codes-and-standards/nfpa-70
International Residential Code (reference where RV standards are silent)
https://codes.iccsafe.org/content/IRC2024P2
American Wood Council — wood framing guidance
https://awc.org/
APA — The Engineered Wood Association
https://www.apawood.org/
Questions
Inspection and submission questions: inspectors@getcertafi.com
General inquiries: hello@getcertafi.com