California SB 655 and Indoor Heat in 2027: What Landlords and Renters Should Know
California SB 655 establishes a state policy that dwelling units should be able to maintain a safe maximum indoor temperature. Learn what changes in 2027—and what the law does not yet require.
The short answer
California SB 655 is enacted law, but it is easy to overstate what it does. Health and Safety Code section 17914 establishes state policy that dwelling units should be able to attain and maintain a safe maximum indoor temperature. It does not itself publish one statewide maximum-temperature number, and it does not say that every existing rental must install air conditioning on January 1, 2027.
The 2027 milestone is regulatory: beginning January 1, 2027, relevant state agencies must consider the state policy when they revise, adopt or establish regulations relevant to achieving it. Property owners, managers and renters should therefore watch HCD, the Building Standards Commission and other responsible agencies for later rules rather than treating SB 655 as a finished equipment mandate.
What SB 655 actually says
SB 655 was approved by the Governor on October 10, 2025 and added Health and Safety Code section 17914. The statute declares that all dwelling units, as defined in Civil Code section 1940, shall be able to attain and maintain a safe maximum indoor temperature.
The law then directs relevant state agencies to consider that policy when developing applicable policies, programs and criteria, and—beginning January 1, 2027—when revising, adopting or establishing relevant regulations. That wording matters because the statute sets policy and a regulatory direction without itself supplying a universal numeric indoor-temperature limit.
January 1, 2027 is not a universal AC-installation deadline
A search result or social post may summarize SB 655 as 'California requires AC in rentals in 2027.' The chaptered text does not say that. It does not name air conditioning as the required solution, establish a statewide retrofit deadline for every existing dwelling, or set one temperature threshold that a landlord can simply plug into a compliance checklist today.
Cooling can involve multiple strategies, and later agency rules may address different building types, climates, feasibility constraints or compliance paths. Until a controlling rule is adopted for the property and circumstance at issue, do not invent a statewide 2027 equipment requirement from the policy statement alone.
HCD's earlier AB 209 work is important context
Before SB 655, California directed the Department of Housing and Community Development through AB 209 to develop policy recommendations aimed at ensuring residential dwelling units can maintain a recommended maximum safe indoor air temperature. HCD's work considers climate goals, regional temperature differences, technical feasibility, electrical limitations, cost barriers and utility capacity.
Those recommendations help explain the policy work behind the issue, but a policy recommendation is not automatically a binding landlord standard. For a compliance decision, distinguish research and recommendations from an adopted statute, regulation, building standard, local ordinance or enforceable order.
What property managers should do now
Build a heat-response record before the rules become more specific. Track resident heat complaints, indoor-temperature observations when lawfully collected, HVAC or ventilation work orders, equipment failures, electrical-capacity issues, shade or envelope measures, vendor recommendations and any accommodation or health-related escalation through the property's established process.
Also identify which agencies and local jurisdictions regulate the property. A local code, subsidized-housing requirement, lease obligation, disability accommodation issue or existing habitability duty can matter independently of SB 655. Do not postpone an existing repair obligation merely because future statewide heat regulations are still developing.
What renters should document during dangerous heat
If a rental becomes dangerously hot, document the actual condition and communicate the problem through a method that creates a record. Note dates and times, whether installed cooling or ventilation equipment is working, any repair requests and the landlord or manager's responses. Keep health and safety concerns separate from unsupported claims about a statewide numerical SB 655 limit that has not been established in the statute itself.
For an immediate medical or heat emergency, use appropriate emergency and public-health resources. This guide explains the housing-law policy framework; it is not a substitute for emergency guidance or property-specific legal advice.
How Max Rental Tools should handle a 2027 heat-rule update
Keep one canonical page for the statewide SB 655 policy and update it when a responsible California agency adopts a material regulation, building standard, compliance date or numeric threshold. If a local jurisdiction later adopts a distinct enforceable indoor-temperature rule, a separate local page is justified only when the legal answer materially differs.
For documentation, Max Rental Tools can support repair requests, condition records and property-management workflows, but the governing statute, regulation and official agency guidance control. If a renter is comparing a move because indoor comfort is a major concern, Open House Rentals can be a separate housing-discovery resource rather than a substitute for the current property's legal analysis.
Common questions
Does California SB 655 require every landlord to install air conditioning by January 1, 2027?
No. The chaptered statute establishes a state safe-indoor-temperature policy and requires relevant agencies to consider it in applicable regulatory work beginning January 1, 2027. It does not itself impose a universal AC-installation deadline on every existing rental.
What maximum indoor temperature does SB 655 require?
SB 655 itself does not state one numeric statewide maximum indoor temperature. Later agency regulations or other applicable local or program rules must be checked for a property-specific standard.
What changes on January 1, 2027?
Beginning January 1, 2027, relevant state agencies must consider the safe-maximum-indoor-temperature policy when revising, adopting or establishing regulations relevant to achieving that policy.
Can a landlord ignore a broken cooling system until California adopts new SB 655 regulations?
Not necessarily. Existing lease duties, building or housing codes, local rules, subsidized-housing requirements, habitability obligations and other laws can apply independently of SB 655. The current controlling rules for the property should be checked.
Official sources
California Legislative Information — SB 655 Chaptered Text / Health & Safety Code § 17914California HCD — Maximum Safe Indoor Air Temperature Policy Recommendation (AB 209)Continue your check
Use the state directory for current jurisdiction-specific rules, calculate the proposed increase, then prepare the appropriate rental document only after the legal-rule checks are complete.