What you said makes sense, I understand your POV, I'll address it below. terming it a "sale" since the SCA in appraisal creates a hypothetical sale
You could produce a residential URAR 'subject to'! Combining the two sites Legally. You will still have excess land. at this point and the HBU would be its present use. In this situation there would be no problem completing this on a 1004. Determining the contributory value of the excess land would not be easy, but it can be done and the results in all probability will be less than the MV of the 2nd site as a stand alone sale.
The sale of the two properties does NOT combine the two sites into one! That is why I asked people to answer my post 132. question The subject property consists of a house along with an adjacent vacant site, conveyed i sale that way. It does not become a house on one big combined site.
Another way is to complete a second report within the URAR as a stand alone appraisal. That ain't gonna fly with them! because the two values ca not be combined and stated at the bottom of page two.
I would if my assignment provide a second market value opinion of the vacant site. Whether it's contributory value to the whole is same as its sep market value to be determined, it can be the same ( see post 138 , dictionary of RE, I posted it separate below ) What "rule" exist, in USPAP that the two values can not be combined and stated at the bottom of page two?
There is another problem that gets injected into valuation Problem. Intended Use of the Appraisal. With this situation of combined sites in excess of what is typical in a Specific Market creates an issue with Exposure Time. You'r potential buyer pool shrinks. The only way to sell the Property in a normal residential market is to lower the Price sufficiently enough to attract a larger set of potential buyers or be just willing to wait and wait and wait for that buyer who thinks like this seller did when they bought the place. Don't underestimate what I just said as it relates to mortgage lending. The intended USER.
Once again, it is not combined sites, it is a house and an adjacent vacant site. I agree, and stated in prior posts, it is a niche market, and would have a limited buyer pool. Many of us appraise niche market properties with limited buyer pools. They do not always sell for lower $ ( though they can). The typically motivated buyer is the buyer pool for a subject property. I appraise 20 $million oceanfront properties. They sell for high $, indeed have a a limited buyer pool, with a long marketing time-of avg 2 years plus. We address market exposure and explain the buyer pool for a niche property.
George nailed it when he said this looks like a expediency by FNMA. In other words they have said if you dork it our way thats OK, we won't turn you into the State Appraisal Board! Your a team player and this saves us money and time by not going through the motions of combining the two LEGALLY! They know most AMC Phone Monkeys don't have a clue either. We also won't force a Buy Back on all the Lenders. WE BE one big Happy Family.
It might be expediency on their part ,or a way to address the issue. But there is nothing "illegal" about selling a house along with an adjacent lot! And if a lender wants to lend on it, so what? If assigned it as an appraisal, it is a complex assignment-, accept or decline.
Lets continue: Is it financially feasible to buy a site that is excess in the Market for a SFR? The average typical buyer who intends to build would not likely do that.
Agree, the "average" buyer who wants to build might not buy such a property, (which makes it a niche property, like other oddball or special or- even very high $ properties become niche markets simply because their price tag excludes so many buyers. If you see adverse marketability for this property in your area, that is part of the appraisal analysis.. In other areas it can find buyers who see it as an opportunity.