Title 24 report pricing varies more than most homeowners expect, and the range isn't arbitrary — it reflects real differences in the complexity of the energy modeling involved.
For straightforward residential alterations — a room addition, a remodel touching HVAC or windows — expect to pay in the $195–$295 range. These projects typically use the prescriptive compliance path, which involves less modeling complexity than a full performance approach.
ADU and JADU projects tend to run somewhat higher, generally $225–$300, because accessory dwelling units often involve their own complete HVAC and envelope systems that need to be modeled independently from the main house, even when they share a structure.
New construction is the most involved category, typically starting around $245 and scaling up with square footage and complexity. A full CBECC-Res model for a new single-family home accounts for every energy-consuming system in the building, plus increasingly common requirements around solar PV sizing and battery storage provisions under the 2022 Energy Code.
Commercial projects follow a different fee structure entirely — Nonresidential Energy Compliance (NREC) reports typically start at $350 for small spaces and scale with conditioned square footage, system count, and occupancy type.
A few factors that can move the price in either direction: rush turnaround typically adds a flat fee (commonly $75–$150 for same-day service), revisions after plans change are usually billed separately at a reduced rate from the original report, and unusually complex projects — additions to non-conforming structures, mixed-use buildings, multiple HVAC zones — may carry a complexity premium.
What should make you cautious: extremely low quotes (under $150 for anything beyond the simplest project) sometimes indicate a consultant using outdated software versions, skipping HERS flag review, or not actually running full compliance calculations. A Title 24 report that gets rejected at plan check costs you more in time than you saved in fees. Ask any consultant which software they use (CBECC-Res/CBECC-Com are the current state-approved tools) and whether HERS verification requirements are clearly flagged in the deliverable.
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