What Plans Are Needed for a Multi-Family Title 24 Report?
Send a floor plan for each unit type with a unit matrix, elevations, wall and roof sections, window and door schedules, mechanical, plumbing and lighting schedules, and a site plan showing north. The number of habitable stories decides whether those sheets feed the low-rise LMCC forms or the nonresidential NRCC forms.
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What each sheet feeds
- A plan for every unit type, with a unit matrix. Each distinct plan is modelled on its own, so say which type sits where, corner, middle, ground or top.
- Elevations and sections. They fix assemblies for the envelope form (LMCC-ENV-01-E) and show which floors count as stories.
- Window and door schedule. U-factor and SHGC must agree with the elevations.
- Mechanical and plumbing schedules. They carry dwelling-unit and central equipment for LMCC-MCH-01-E and LMCC-PLB-01-E.
- Lighting and electrical schedules. Corridors and lobbies feed LMCC-LTI-01-E; power distribution and solar-battery use LMCC-ELC-01-E and LMCC-SAB-01-E.
- Site plan with north. Orientation drives the glazing analysis.
Count the stories first
A habitable story holds habitable space and has at least 50 percent of its volume above grade. Mezzanines and minor spaces such as an enclosed entry stair do not count. Buildings of three or fewer habitable stories use the performance certificate LMCC-PRF-01-E, registered with an ECC-Provider when verification measures apply. Four or more use NRCC-PRF-01-E, which is not registered that way. Mark the stories on a section; the low-rise versus mid-rise page explains the split.
Shafts and central equipment
Central ventilation ducts that serve several dwelling units are leak tested by a certified mechanical acceptance technician on form NRCA-MCH-22-A (NA7.18.3). In buildings of four or more habitable stories, central heat or energy recovery ventilators are tested under NA7.18.4. Show them on the drawings.
The forms live in the drawing set
The manual requires the certificates to be integrated into the drawing set at permit application, agreeing with the plans. Features outside the performance run are shown prescriptively on separate certificates. In a low-rise mixed-use building where neither the residential nor the nonresidential use is under 20 percent of conditioned floor area, a separate submittal is prepared for each (Section 100.0(f)).
If something is missing
We ask rather than assume, and state any assumption in the report. Forms are explained on the multi-family forms page and what an LMCC is; timing is on the turnaround page. To order, see multi-family Title 24 reports.
Common Title 24 Questions
- Do apartments need Title 24?
- Does a duplex need Title 24?
- Do triplexes and fourplexes need Title 24?
- Which Title 24 forms does a multi-family project use?
- What is an LMCC certificate?
- How much does a multi-family Title 24 report cost?
Frequently Asked Questions
One for each distinct unit type, plus a matrix saying where each type sits and how many there are. Repeated plans are modelled once, so the count of types drives the work.
Yes. We can state clear assumptions in the report, but confirm them before the set goes to plan check so the drawings and the certificate agree.
Explore Permit-Ready Reports
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- Can a Building Department Waive the Title 24 Report? When "You Don't Need One" Is Allowed
- Can I Submit a Title 24 Report Electronically? Signatures, PDFs and Registered Copies
- Can Title 24 Be Done From Preliminary Plans?
View all Permit-Ready Reports guides → · Reports and Calculations · Title 24 guide