Estimating the costs and the amount of scaffolding that you need to rent is fairly straightforward. Rates will vary depending on whether the scaffolding is constructed for you or you construct it yourself.
You will need to start by measuring the length of the area that you wish to cover in scaffolding. If the scaffolding is being constructed on the exterior of the house, remember that scaffolding commonly wraps round corners and include this in your measurements. Then measure the maximum height that you will need to cover with the scaffolding.
Commonly scaffolding is supplied in units that are 8ft long and 6ft high, but this does vary from manufacturer to manufacturer, so it is important to speak to the supplier that is supplying the scaffolding from to confirm the size and cost of their units before calculating how many you will require. Once you know how many units you will need to do the job, multiply that number by the daily hire rate to produce a daily rate.
So long as you know how long the job is going to take to complete, you can use these numbers to produce a total rental cost.