Does a medical office fit-out count as a healthcare facility?

Not automatically. Section 100.1 ties the definition to health facilities licensed under Health and Safety Code Section 1250 and clinics inside them, so confirm with the building department.

Does an old office need to be upgraded just because a clinic moves in?

No. The Commission manual says a change of occupancy alone requires no action. Altered components are assessed against the medical occupancy.

Change of Use Title 24: Office to Medical

Turning office space into a medical suite triggers nothing by the change alone; the alteration rules for the new occupancy apply to the lighting, ventilation or conditioning work that follows. Settle three points early: whether the tenant is a healthcare facility under the Part 6 definition, how small rooms and corridors are sensed, and how waiting-room occupancy sets the outdoor air.

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The occupancy changes, but the work is the trigger

The Energy Commission manual says a change of occupancy alone needs no action under the Energy Code. When alterations are made, Section 141.0(b) applies to the occupancy after the alterations (Note 1 to Section 141.0), so a relight or a reworked ventilation system is assessed as medical-office work. The general rule is on the change of use page, and the building type is under medical offices.

Is the tenant a healthcare facility?

Part 6 excepts healthcare facilities from several rules, including all of Section 141.0 for alterations, the multilevel lighting rule (130.1(b) Exception 3) and the shutoff rule (130.1(c) Exception 1). Section 100.1 defines a healthcare facility as a health facility under Health and Safety Code Section 1250, or a clinic under Section 1204 located within a health facility. That is tied to licensed facilities, so confirm with the building department before assuming the exceptions.

Small rooms, corridors and the lighting table

Offices of 250 square feet or less, conference rooms and restrooms need occupant sensing that shuts all lighting off within 20 minutes (130.1(c)5). Corridors need sensors that cut power by at least 50 percent, and offices over 250 square feet need zones of 600 square feet or less. Table 140.6-C lists exam and treatment rooms at 1.15 watts per square foot under Healthcare Facility and Hospitals, and office areas at 0.60 or 0.65. Where a use is not listed, Section 140.6(c)2A allows a reasonably equivalent type, so agree the row with the plan checker.

Waiting rooms, not office defaults

Office space in Table 120.1-A is 5 people per 1,000 square feet. The airflow equation uses the designer's expected occupancy or the table default, whichever is greater, at 15 cfm per person (120.1(c)3), so a full reception area is a designer input, not an office number. See commercial ventilation. Lighting goes on NRCC-LTI-E; for the office starting point, see office tenant improvements, or send plans from the commercial page.

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