How Much Does Title 24 Compliance Cost and How Long Does It Take?

I do not treat Title 24 as a flat form-filling charge. A small alteration with settled assemblies and equipment is different from a new commercial building with multiple space types, complex glazing, lighting controls, HVAC systems, and performance tradeoffs. The proposal should state the code cycle, building scope, compliance method, required certificates, drawing coordination, included model iterations, plan-check responses, and construction-phase services.

• Building type, conditioned area, occupancy, and alteration scope
• Envelope, lighting, HVAC, controls, service water heating, and covered processes
• Prescriptive documentation versus whole-building performance modeling
• Number of alternatives, revisions, submissions, and construction changes

A useful schedule starts only after the necessary inputs are available. Focused prescriptive documentation can take less effort than a whole-building performance model, but neither should be promised before reviewing the project. Modeling may require geometry setup, zoning, schedules, assemblies, system definitions, proposed-versus-standard comparison, and design revisions. I separate that production period from the jurisdiction's intake and plan-check queue, which the consultant does not control.

• Set an input-complete milestone before starting the production clock
• Identify who supplies envelope, lighting, mechanical, and controls data
• Reserve time for internal quality control and drawing coordination
• Track agency review and consultant response as separate schedule periods

A plan-check comment can require clarification, corrected inputs, revised forms, or changes across drawings and calculations. During procurement, a substituted rooftop unit, glazing product, water heater, luminaire, or control sequence can affect the compliance basis. Residential HERS measures and nonresidential acceptance tests also depend on installed systems and qualified field participants. Late scheduling or failed tests can delay closeout even when the original permit analysis was timely.

• Budget for at least the review cycles expressly included in the proposal
• Require energy-impacting substitutions to be reviewed before installation
• Schedule raters and acceptance-test technicians early
• Distinguish permit issuance from final compliance closeout

For an estimate, I ask for the address, jurisdiction, permit date target, occupancy, floor area, project narrative, architectural drawings, envelope assemblies, lighting plans and controls, mechanical schedules, service-water-heating information, and any prior compliance files or comments. A proposal based on actual inputs can identify exclusions and decision dates; a generic price cannot reveal whether the design is ready to model.

• Current architectural and engineering backgrounds
• Window, wall, roof, lighting, HVAC, and water-heating selections
• Owner performance goals and alternatives requiring study
• Permit milestones, procurement dates, and known agency comments