[CANUFNET] Woodlot valuations

[Alex Satel]

Geri,

 

The quick and dirty answer: an ‘ISA plant appraisal’ doesn’t really exist.
The ISA PVAC (Plant Appraisal and Valuation Committee) was/is involved as
one of the contributors to the CTLA guides (among other groups such as
ASCA), but there is not an ISA method per se. Anyone asking probably just
doesn’t know that it should really be referred to as CTLA, and that’s what
they’re really asking for. 

 

Now, what CTLA method they are after is another story. There are several
appraisal methods outlined in the Guide, and it’s a matter of choosing the
most reasonable method for the situation. It’s true (IMO) that the Trunk
Formula Method (which is what I believe you’re generally referring to) is
not well-suited to many situations, so something like timber value may
actually be a reasonable choice. Alternately, when we’ve appraised or
reviewed appraisals of plantations that for whatever reason must be done
using the TFM, we would typically expect to use a fairly low (maybe 10-15%)
location rating, thus accounting for the fact that it’s not an appraisal of
an individual tree that might have a high contribution to the site. 

 

Another method (which was recently brought to my attention, as I had
overlooked it in the guide) is the Contributory Value – basically, how much
does the plantation contribute in terms of value to the property? It’s
outlined on Pg. 100 if you have the 9th edition of the guide handy. 

 

Like others have said, cost of cure or replacement cost could also work.

 

I’m sure this muddies the waters a bit, but appraisal can be tricky. I think
they key is to come up with something that seems reasonable and is
defensible. I’m sure others on the list will also have more to say on the
matter. 

 

Cheers,

 

Alex

 

 

Alex Satel, MFC
ISA Certified Arborist ON-1353A

Urban Forest Innovations Inc.

1248 Minnewaska Trail
Mississauga, ON  L5G 3S5

T: (905) 274-1022

 <mailto:asatel at ufis.ca> asatel at ufis.ca

 <http://www.urbanforestinnovations.com/> www.urbanforestinnovations.com

Description: UFI new logo very small

 

 

From: canufnet-bounces at list.web.net [mailto:canufnet-bounces at list.web.net]
On Behalf Of Geri Poisson
Sent: September-25-12 1:56 PM
To: canufnet at list.web.net
Subject: [CANUFNET] Woodlot valuations

 

Hello all,

A landowner/developer is looking to remove trees from their land and the
approval authority wants an ISA plant appraisal for the trees to be removed.

This is fine for individual trees,  but there are some hectares of conifer
plantations.  

I am looking for an accepted methodology for appraising these trees for the
town.  Is there a methodology for plantations that is similar to the CTLA
Plant Appraisal Guide.  I don’t believe an appraisal of the value of 

the timber is what they are looking for.  This would be in regards to
compensation purposes.

 

Thank you,

 

Geri Poisson, B.A. (Hon) / Certified Arborist, Terrestrial Ecologist

BEACON ENVIRONMENTAL

126 Kimberley Avenue, Bracebridge, ON P1L 1Z9

T)  705.645.1050 x22  F) 705.645.6639  C) 705.828.1196

 <http://www.beaconenviro.com/> www.beaconenviro.com

ü Please consider the environment before printing this email.

 

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