Building services compliance: what you need to know

What building services means for your business

Building services are the mechanical and electrical systems that make a building usable. They include the electrical installation, gas supply, heating, ventilation, air conditioning, plumbing and water systems, lighting, and passenger lifts. Every business premises relies on several of these systems, and each carries its own compliance obligations.

Building services compliance matters because these systems can cause serious harm when they fail. Faulty electrics cause fires. Poorly maintained gas appliances produce carbon monoxide. Neglected water systems breed legionella. Unmaintained lifts can trap or injure people. Getting compliance right protects your staff, your customers, and your business.

The challenge for building owners and occupiers is that no single regulation covers everything. Different systems fall under different legislation, enforced by different bodies. This guide maps the landscape so you know which obligations apply to you and where to find detailed guidance.

How regulations overlap

Building services compliance involves two distinct regulatory layers:

• Building Regulations govern how systems are designed, installed, and modified. They apply at the point of construction, alteration, or replacement. Approved Documents (Parts A through S) set the technical standards. Building control must approve the work, either through a local authority or a Registered Building Control Approver, or through a competent person scheme.
• Workplace and safety regulations govern how systems are maintained and operated throughout their life. The Health and Safety at Work etc. Act 1974 places a general duty on employers and building controllers to ensure systems remain safe. Specific regulations (EAWR, LOLER, Gas Safety Regulations, Workplace Regulations) add detailed requirements for each system.

As a building owner or occupier, you are typically responsible for both layers. If you are a tenant, your lease should specify whether the landlord or tenant is responsible for each system. Ambiguity in the lease does not remove the duty - check your responsibilities before a problem arises.

Your building services obligations at a glance

The table below summarises the key compliance requirements for each building service. Use the links to each detailed guide for the full requirements.

Electrical installations

Your fixed electrical installation must be inspected and tested periodically through an Electrical Installation Condition Report (EICR). The Electricity at Work Regulations 1989 require all electrical systems to be maintained in a safe condition. Portable equipment must be managed through a risk-based approach.

For detailed guidance, see Electrical safety in your business premises and Electrical installations and Part P compliance.

Gas installations

All gas work must be carried out by a Gas Safe registered engineer. If you are a landlord, you must arrange an annual gas safety check. Commercial premises have a duty to maintain gas appliances in a safe condition. Carbon monoxide alarms are mandatory in rented properties with fixed combustion appliances.

For detailed guidance, see Gas safety compliance for commercial premises.

Heating systems

Replacement boilers must meet minimum efficiency standards under Part L. Part J governs combustion appliances, flues, and fuel storage. Heat pump installations may qualify for permitted development rights subject to noise and distance conditions.

For detailed guidance, see Heating system compliance for business premises.

Ventilation and air quality

The Workplace (Health, Safety and Welfare) Regulations 1992 require effective and suitable provision for ventilation, with a guideline of 5 to 8 litres per second per occupant of fresh air. Part F of the Building Regulations sets ventilation requirements for new and refurbished buildings.

For detailed guidance, see Ventilation and indoor air quality requirements.

Air conditioning and refrigeration

Air conditioning systems with an effective rated output of 12 kilowatts or more must be inspected every 5 years by an accredited energy assessor. Equipment containing fluorinated greenhouse gases is subject to mandatory leak checking at intervals determined by the CO2 equivalent charge. The F-gas phase-down restricts the use of high-GWP refrigerants in new installations.

For detailed guidance, see Air conditioning and F-gas compliance.

Water systems and legionella

Every business premises with a water system needs a legionella risk assessment. You must manage hot and cold water temperatures, flush little-used outlets weekly, and maintain records of all water safety activity.

For detailed guidance, see Water systems and legionella compliance.

Lighting

Workplace lighting must be suitable and sufficient, with natural light where reasonably practicable. Emergency escape lighting is required under the Fire Safety Order. Part L sets minimum energy efficiency standards for lighting in non-domestic buildings.

For detailed guidance, see Lighting requirements for business premises.

Passenger lifts

Passenger lifts must be thoroughly examined every 6 months under LOLER. New installations must meet the Lifts Regulations 2016. Part M sets accessibility standards. Higher-risk residential buildings require monthly firefighting lift checks.

For detailed guidance, see Passenger lift compliance for building owners.

Who enforces what

Different bodies enforce different aspects of building services compliance:

• Health and Safety Executive (HSE) - enforces workplace safety regulations including EAWR 1989, LOLER 1998, Gas Safety Regulations, and the Workplace (Health, Safety and Welfare) Regulations 1992. Powers include improvement notices, prohibition notices, and prosecution with unlimited fines.
• Building Safety Regulator (BSR) - part of HSE, oversees building control for higher-risk buildings under the Building Safety Act 2022. Regulates the registration of Building Control Approvers.
• Local Authority Building Control (LABC) - approves building work and enforces Building Regulations at local level. Can issue enforcement notices for non-compliant building work.
• Environment Agency - enforces F-gas regulations in England, including the refrigerant leak checking regime and the F-gas phase-down. Maintains the F-gas register.
• Gas Safe Register - not a regulator but the official registration body for gas engineers. HSE enforces Gas Safety Regulations; Gas Safe Register verifies engineer competence.
• Fire and Rescue Authority - enforces the Regulatory Reform (Fire Safety) Order 2005, including emergency lighting and firefighting lift duties in higher-risk buildings.

How this connects to your wider compliance

Building services compliance overlaps with several other areas:

• Fire safety - emergency lighting, fire alarm systems, smoke control ventilation, and firefighting lifts all fall within both fire safety and building services compliance
• Building safety - the Building Safety Act 2022 adds gateway requirements and golden thread duties for higher-risk buildings that affect building services installation and modification
• Energy performance - EPC requirements and MEES minimum standards are closely linked to Part L compliance for heating, lighting, and insulation
• Construction - CDM 2015 applies when building services are being installed or significantly modified

Start with the areas most relevant to your premises and work through the detailed guides for each system. If you are unsure where your obligations lie, a competent building services consultant can carry out a compliance review across all systems.