When a commercial building is leased based on the floor area, there is often a requirement for the Lettable area to be determined. This can prevent arguments between lessor and lessee and resolve arguments on what is included in the lease area. The Property Council of Australia publishes a document known as the Method of Measurement for Lettable Area which sets out guidelines for measuring floor space in leased premises.
It is recommended that the lettable area of a premises should be determined as a part of negotiations for a lease. The parties should decide which method should be used to determine the floor area. There are methods of measurement for three types of premises:
- Gross Lettable Area (Retail).
The Gross Lettable Area (Retail), abbreviated as GLAR, is used for calculating retail tenancy areas in shopping centres, commercial buildings, or strip shops, free-standing shops, semi detached or terrace type shops in suburban streets.
- Gross Lettable Area
The Gross Lettable Area (GLA) is used for calculating tenancy areas in warehouses, industrial buildings, free standing supermarkets and showrooms.
- NettLettable Area
The NettLettable Area (NLA) is used for calculating tenancy areas in office buildings and office and business parks.
Each method of measurement is slightly different in terms of the way the area is measured – whether it is to inside face of wall, mall line and so on. It is important to use the correct method of measurement for the appropriate type of tenancy.
The Method of Measurement provides rules for single and multiple tenancies with a building, as well as mixed uses within a building.
When determining the lettable area of a building, a surveyor measures the floor area according to the appropriate PCA Method of Measurement. Doherty Smith & Associates use a laser measuring tool for most PCA surveys, inputting the data to Civilcad software for calculations then to AutoCAD for drafting the plan.
It is best to have the floor plans for a building on hand when measuring for a PCA survey, as this can indicate whether any hidden voids within the building which may affect the outcome of the survey. Where floor plans are not available, the surveyor must make a professional judgement and note in the report that the floor plans were not available.
If you have any queries regarding the lettable area of a commercial premises, please contact Doherty Smith & Associates. We are happy to provide advice and surveying services to assist with your project.
Field Data Capture
Doherty Smith & Associates are experienced in field data capture for school and TAFE buildings. Field Data Capture requires changes and additions to school and TAFE buildings to be measured according to a comprehensive Specification, then the data processed to be in a format suitable for NSW Public Works.
NSW Public Works has a database on which is stored maps of every school and TAFE in NSW. Operators can zoom in on a particular school, then zoom in to a building, and rooms within the building. Each room has data stored relating to it, with information such as the window area, type of floor covering, whether the room is air conditioned and much more.
The job of the Field Data Capture consultant is to capture new buildings and features, or changes to existing buildings or features. The new or changed buildings are measured inside and out, and the data captured for each room. The data is then processed and sent to NSW Public Works for them to amend their database. Once NSW Public Works have entered the data in to their database, the results are returned to the consultant for quality assurance checks, with final verification sent to Public Works upon completion.
Eric Smith had several years of experience in Field Data Capture before joining Doherty Smith & Associates. Doherty Smith & Associates have been accredited consultants for Field Data Capture since 2007.