Ok i have formulas for 4 different methods.
- The Helliwell System
- Melbourne City Council
- The Burnley Method
- Aust Std - Draft
Generally, they all start with a base value. This comes from timber (not that relevent IMO) or advanced tree prices.
Then a range of modifiers are applied eg. species, location, volume, form, vigour, ULE,
The results vary wildly. I'll reproduce an example i made.
Cuppressus Eucalyptus Brachychiton Poplar
Helliwell $167,500 $50,000 $270,000 $255,000
MCC $38,236 $14,000 $3,145 $10,096
Burnley $3,350 $9,335 $2,650 $6,125
Aus Std $13,650 $6,813 $60,843 $15,000
Wheres Boa with a PDF! Tommorow i might be able to scan the formulas