The CF1R and LMCC are both Title 24 Part 6 energy compliance documents, but they apply to different building types and occupancies.
CF1R — Certificate of Compliance for Residential
Required for single-family homes, ADUs (detached, attached, and garage conversions), and most other single-unit residential projects. Generated using CEC-approved compliance software. Covers insulation, windows, HVAC, water heating, and lighting for single-family residential occupancies.
LMCC — Low-Rise Multifamily Compliance Certificate
Required for multi-unit residential buildings up to three stories — duplexes, triplexes, fourplexes, and small apartment buildings. Covers the same energy systems as the CF1R but accounts for shared walls, multiple units, and multi-zone HVAC configurations common in multifamily construction.
Quick rule of thumb
- 1 unit → CF1R
- 2 or more units, up to 3 stories → LMCC
If you are unsure which report your project requires, contact us before ordering — we will confirm the correct report type based on your project description at no charge. Title24Comply offers both CF1R and LMCC reports, with transparent fixed-rate pricing and 2–3 day turnaround.