Multi-Family Title 24 Energy Reports
Compliance documentation for duplexes, triplexes, fourplexes and larger multi-family buildings anywhere in California.
- Choose your report
- Upload your plans
- Pay securely
- Permit-ready report by email
Multi-family work adds a dimension that single-family projects do not have: repetition. Unit types repeat, but orientation, adjacency and exposure do not. A corner unit with two exterior walls and a middle unit with one behave differently, and the documentation has to reflect that rather than modelling one unit and multiplying.
Project types
Duplex, triplex and fourplex — two to four dwelling units on one lot
Does a duplex need Title 24? →Triplex and fourplex Title 24 →
Townhomes and rowhouses — attached homes, each with its own entrance
Larger multi-family developments — apartment buildings, low-rise and mid-rise
Do apartments need Title 24? →Low-rise vs mid-rise multifamily →
Multi-family additions and alterations — remodels, new systems and added units in existing buildings
Mixed-use buildings — residential above commercial space
Which code applies
Multi-family buildings do not automatically follow the single-family rules. Depending on the building, multi-family projects may fall under the multifamily provisions rather than the low-rise residential ones, and taller or mixed-use buildings can involve nonresidential requirements for the commercial portion. Establishing which applies is the first step, and it is worth getting right — it determines the entire document set.
Mixed-use
A building with retail at grade and apartments above may need both residential and nonresidential documentation. We identify that at quoting rather than after delivery, so you are not surprised by a second scope halfway through plan check.
Pricing
From $345, including up to 4,000 sq ft and 4 units. Additional square footage is +$25 per 500 sq ft and each additional unit is +$95, both itemised in the order form before payment. Larger developments are quoted individually.
Common multi-family 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?
- How long does a multi-family Title 24 report take?
- Does a multi-family remodel need Title 24?
- Does multi-family HVAC work need Title 24?
- What if plan check returns energy corrections on a multi-family project?
- Multifamily ventilation requirements
- What is dwelling unit compartmentalization?
- Multifamily water heating requirements
- Low-rise or high-rise multifamily: which applies?
- What does Title 24 require for multifamily temperature control?
- Adaptive Reuse and Title 24
- Title 24 for an ADU on a Multifamily Property
- Multifamily Solar and Battery Requirements
- Apartment Window Replacement Under Title 24
- Multifamily Lighting Under Title 24
- Duplex Title 24: One Report or Two?
- Triplex Title 24 Requirements
- Fourplex Title 24 Requirements
- Multifamily Addition Title 24 Requirements
- Apartment Unit Remodel Title 24 Requirements
- Multifamily Common Area Lighting Title 24 Requirements
- Multifamily Common Area HVAC Title 24 Requirements
- Multifamily Water Heater Replacement Title 24 Requirements
- Multifamily Roof Replacement Title 24 Requirements
- Multifamily Acceptance Testing Before Final Inspection
- What Plans Are Needed for a Multi-Family Title 24 Report?
Frequently Asked Questions
Not necessarily. Depending on the building, multi-family projects may fall under the multifamily provisions rather than the low-rise residential ones. We confirm which applies before starting.
Yes. A building with commercial at grade and residential above may require both residential and nonresidential documentation, which we identify at quoting.
Each unit beyond the included four is +$95, itemised in the order form before you pay.
