Brad Ellis
Senior Member
- Joined
- Feb 7, 2006
- Professional Status
- Certified Residential Appraiser
- State
- California
Guys,
I think that there are really two questions here- one is measuring the external obsolescence and the other is the broader question is whether or not it is attributable to either land or improvements or to both.
Staying away from the measurement part, I am of the opinon that the loss is attributable to the improvments most of the time.
Using the example of the home on the busy street that loses income from its location- what if the externality were a railroad station causing it- say right across the street? Under SFR use it may well have externalities present; however if it were being used for say an apartment building and rents from a unit in that location actually exceeded rents from other competing buildings, would there even be any present?
If not, then the assumption that the loss is attributable to the improvements hold true.
Now I have not read the AI's most recent publications but other texts did say, if I remember correctly, that land does not depreciate. And then they go on to defeine depreciation as the loss in value form all causes from the upper limit.
So, if the loss is depreciation, and if land cannot depreciate (no one is saying it cannot lose value), then how can the loss be attributable to the land?
And of course, I see the conundrum in this- how can it lose value without depreciating? I've never had a firm handle on that part!
Brad
I think that there are really two questions here- one is measuring the external obsolescence and the other is the broader question is whether or not it is attributable to either land or improvements or to both.
Staying away from the measurement part, I am of the opinon that the loss is attributable to the improvments most of the time.
Using the example of the home on the busy street that loses income from its location- what if the externality were a railroad station causing it- say right across the street? Under SFR use it may well have externalities present; however if it were being used for say an apartment building and rents from a unit in that location actually exceeded rents from other competing buildings, would there even be any present?
If not, then the assumption that the loss is attributable to the improvements hold true.
Now I have not read the AI's most recent publications but other texts did say, if I remember correctly, that land does not depreciate. And then they go on to defeine depreciation as the loss in value form all causes from the upper limit.
So, if the loss is depreciation, and if land cannot depreciate (no one is saying it cannot lose value), then how can the loss be attributable to the land?
And of course, I see the conundrum in this- how can it lose value without depreciating? I've never had a firm handle on that part!
Brad