Lighting power density
Identify the general lighting and calculate its nominal power per square metre (W/m²) for the areas being assessed.[2]
Tenancy Lighting Assessments
Office lighting, clearly assessed.
Tenancy Lighting Assessments (TLA) for office owners, landlords and agents. Work directly with an accredited assessor on a standalone assessment or as part of your BEEC engagement.
A focused assessment of office lighting.
A TLA assesses the energy efficiency of general office lighting expected to remain when a tenant leaves and removes their fit-out. It records installed lighting power density and the capacity of the lighting controls. Certification is managed by the Commercial Building Disclosure (CBD) Program.[1]
The assessment covers lighting energy efficiency; it does not measure light levels (lux), lighting quality or suitability for a particular use.[1]
What is assessed
The installation, the controls and the evidence.
Lighting control capacity
Review the installed controls, such as switching, timers and occupancy sensors, and grade their capacity under the TLA rules.[2]
Site inspection and records
Check plans against the premises and record lighting, controls and supporting photographs to substantiate the assessment.[2]
Preparing for your TLA
Clear requirements from the start.
We agree the office areas in scope, review the information available and arrange site access. The assessment can cover all or part of a building’s office space.[2]
Share any existing TLA and let us know about changes to the lighting or tenancy layout. We will confirm the evidence needed for the agreed assessment.
Useful starting information
- Available floor or survey plans and tenancy boundaries
- Lease information identifying lighting that stays with the space
- Lighting schedules, specifications and controls documentation
- A site contact and access to the areas being assessed
The final evidence list depends on the premises and assessment scope.[2]
How it works
From site review to certification.
- 1
Scope
Agree the areas to assess, review existing records and confirm access.
- 2
Inspect
Visit the site, identify lighting and controls, and gather supporting evidence.
- 3
Assess
Calculate lighting power density, grade control capacity and validate the results.
- 4
Submit & support
Submit the TLA for CBD certification and respond to assessment queries.[1]
How a TLA fits with your BEEC.
A certified TLA is valid for five years. An existing valid assessment covering the relevant area can be reused for a Building Energy Efficiency Certificate (BEEC) application. Modifying a TLA does not reset its original expiry date.[1]
A BEEC combines a TLA with a NABERS Energy for Offices rating. Its maximum validity is 12 months, ending sooner if either supporting assessment expires.[3] We can coordinate your BEEC assessment and application, including the NABERS Energy rating.
We provide the published CBD rules and links to official guidance for you to review. You are responsible for determining whether your building or area is disclosure affected. Taktet does not make that determination.[4]
Currency and citations
Rules and sources used.
Checked 9 September 2026.
This page uses the CBD Program’s published TLA and BEEC guidance and Tenancy Lighting Assessment for Offices Rules v4.1. Review the official sources for current requirements.
- CBD Program: Tenancy Lighting AssessmentsAssessment purpose, accredited assessors, certification, validity and modifications.
- CBD Tenancy Lighting Assessment for Offices Rules v4.1 (PDF)Scope, lighting power, controls, site inspection and supporting evidence.
- CBD Program: Building Energy Efficiency CertificateHow TLA and NABERS Energy assessments support a BEEC and its validity.
- CBD Program: Disclosure affected buildingsPublished rules for clients to review when determining their disclosure obligations.
Need a Tenancy Lighting Assessment?
Tell us about the office space, available records and your timing. We’ll help you plan the assessment.