[CANUFNET] Woodlot valuations

Wed Sep 26 19:04:25 EDT 2012

Just toadd to Alex's answer. The CTLA Guide for Plant Appraisal is authored
by more orgs than just ISA. Others include ANLA,ASCA, ASLA, ALCA, ACF, and
the NAA (now TCIA). Each ISA chapter has its own RPAC .(Regional Plant
Appraisal Committee) The PVAC including ISA is now working on a 10th edition
to the guide. The way we valuate trees may change including use of the Trunk
Formula Method (TFM). However read the guide as Alex says but most important
define the assignment first and decide which method: TFM, RCM or Cost of
Cure.  The Contributory Value to Real Estate can be an option but but of
course this involves realtors and cannot be done by arborists etc. alone.
This may be a better fit in the 10th edition. Having said this if the
assignment calls for the TFM please vist the ISAO web site
(www.isaontario.com) and key in Tree Appraisal. In my long experience the
TFM has applied to most appraisal situations and is always used for guidance
in municipal tree security deposits.

Woodlot valuations  it depends but here for CTLA the Cost of Cure could be
used if the size of trees lost is larger than what is available from
nurseries. For value of timber, I would suggest that your first step would
be to speak to an RPF and contact the Ontario Forestry Association  and
Ontario Woodlot Association.

regards Jack Radecki ISAO RPAC Chair

From: canufnet-bounces at list.web.net [mailto:canufnet-bounces at list.web.net]
On Behalf Of Alex Satel
Sent: September-26-12 12:31 PM
To: 'Canadian Urban Forest Network'
Subject: Re: [CANUFNET] Woodlot valuations

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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