Quote from @Michael Plaks:
@Justin Brin
You are asking the wrong question. The correct question is - how much could you sell the land for if there was no house?
You are not buying a house for $800k. You're buying land and the house, and some part of the $800k is for the house, and the other part is for the land. Need to find out what it is.
The replacement value of the house is irrelevant. What matters is - how much of your $800k went towards the house in its current condition.
Since in many areas it's very hard to find someone that is selling just the land without the house this means there is no comparables for just land.
I think it will be easier in those cases to find the fair value of the house at the time of the purchase. Since replacement costs are easier to get. Can they reflect the structure value?
If we have a fair structure value then we can calculate the land value?
I'm assuming in a very desirable areas "Land fair value" + "Structure fair value" will be much greater than the purchase price.
The county will choose to favor land value to be higher for property tax purpose (Since they will get more taxes on vacant lands).
Tax payers will prefer to favor the structure value since they can get higher depredations. None of them are wrong. Not the county and not the tax payer.
There are areas in Los Angeles that a house can cost $800k and the county will write the structure value is 20% ($200k) but there is no way that this is true. If a replacement cost is 600k there is no way a remodeled house in good condition will be 30% value of new construction.
I believe in this case the IRS can't come and claim allocating 80% of the purchase price to the structure is wrong.
What do you think?