• Input benchmark – plastering

    The main activities for businesses in this industry are installation of solid or wet plastering and decorative plaster finishing for buildings.

    These benchmarks do not apply to cement rendering or the installation of plasterboard sheets and cornices for buildings and other structures.

    Input benchmarks

    You may find the input benchmarks useful in calculating the expected income based on the labour and materials used. They apply to plasterers who work directly with household customers and who are responsible for purchasing their own materials.

    The input benchmarks have been developed with advice from the West Australian Solid Plastering Association and trade participants.

    They represent the industry norm. You should consider your own personal circumstances when using the benchmarks to assess your situation.

    Note: These benchmarks are current as at April 2015.

    Input benchmark guide

    The table below sets out input benchmarks for plasterers.

    You can use this benchmark to compare and check your business performance to the plastering industry average.

    Cost of materials – sand, cement, lime, plaster
    as percentage of price charged to customer*

    10 – 20

    Hard plastering – sand for 100 square metres (10mm depth, 2 coats) and white plaster finish coat
    – tonnes

    2

    Hard plastering – sand for 100 square metres (10mm depth, 2 coats) and white plaster finish coat
    – cubic metres

    1.3

    Cement for 100 square metres (20kg bags)

    10

    Average job size (internal residential) – square metres

    300

    Days to complete average job** – two tradespeople

    6

    Days to complete average job** – three tradespeople

    4

    Days to complete average job** – four tradespeople

    3

    Price charged per square metre (mid-range)

    $25 – $50

    *Varies on price charged per square metre.

    **Includes extras such as set out, clean up and manual wash down.

    Note:

    • All dollar amounts are GST-inclusive.
    • Prices charged may vary between states and regions.
    • Add extra charges for cost of scaffolding if required.

    Input benchmark – sales turnover

    You can use this benchmark to:

    • estimate your income
    • compare your income against the plastering industry average
    • check that your records accurately reflect your income.
    Sales turnover – income guide for tradespeople

    Income guide – plastering

    Two tradespeople

    Three Tradespeople

    Four tradespeople

    Amount of sand purchased/used in year (tonnes)

    216

    330

    438

    Amount of cement purchased in year (20kg bags)

    1,080

    1,650

    2,190

    Square metres of hard plastering installed per year

    10,800

    16,500

    21,900

    Average price charged per square metre – materials and labour

    $25 – $50

    $25 – $50

    $25 – $50

    Sales turnover range – labour only

    $88,000 – $154,000

    $132,000 – $231,000

    $176,000 – $308,000

    Sales turnover range – materials and labour

    $270,000 – $540,000

    $412,500 – $825,000

    $547,500 – $1,095,000

    Average labour charge per day per person

    $200 – $350

    $200 – $350

    $200 – $350

    Average job size – square metres

    300

    300

    300

    Jobs completed per year

    36

    55

    73

    Days to complete average job

    6

    4

    3

    Days worked per year

    220

    220

    220

    Note:

    • All dollar amounts are GST-inclusive.
    • Prices charged may vary between states and regions.

    Input benchmark plastering examples

    Example 1

    Jim runs a plastering business and has two subcontractors working regularly with him. They work on household jobs only and charge an average of $35 per square metre (excluding scaffolding charges).

    Jim reviews the statements from his supplier which show he has purchased 320 tonnes of sand during the year. On average, Jim allows two tonnes of sand per 100 square metres and estimates he has completed approximately 16,000 square metres of plastering for the year.

    As his supply and installation charges are consistent with the benchmarks, he uses the benchmark guide to calculate that his total sales should have been $560,000.

    As Jim's records show reported income of $555,000, which is within the benchmarks and close to his estimate, he is confident with his record keeping.

    Example 2

    Sebastian has a plastering business and has a team of four people working on each job. On average, Sebastian charges $40 per square metre (excluding scaffolding charges, which are paid by the customer). Sebastian estimates his team can plaster an average of 100 square metres per day, totalling sales of $4,000 per day.

    Checking his business records, Sebastian finds his recorded income is $800,000 for the year. Using his benchmark earnings of $4,000 per day, he estimates he would have worked 200 days to earn this yearly income. Sebastian however has had a busy year and is sure he has worked more than that.

    Sebastian reviews his quote books and finds seven jobs where he received cash payments of $80,000, which had not been recorded as income. With these additional jobs Sebastian calculates that he worked for approximately 220 days and recalculates his yearly income as $880,000. This is consistent with the benchmarks and his business practices.

    Sebastian contacts his bookkeeper for advice on better record keeping practices.

    End of example
      Last modified: 28 Mar 2017QC 43693