Anyone in sales knows, you are going to have to be prepared for a lot of "Nos" to get to the "Yes". 

Can we obtain a special form or document to show the loss?   

It's one of those things where if you are going to require it, you have to be prepared to evict for not getting it.

Most value adds involve work   Some require specialized knowledge.Here is a list of why adding ADUs in my CA market is typically a poor RE investment:1) The value added by the ADU addition is often significantly less than the cost of adding the ADU.

So, yes, you'll get a lower percentage of the cash flow (which isn't that high anyway for long-term rentals like pretty much anywhere in the world, including the US) but you'll get appreciation and loan amortization.b) You successfully invest in STRs and make enough money that you don't care that much about the higher taxes.To conclusion, as a foreigner investing in Spain, with a few exceptions of specialized niches, I focus on areas that have (high) capital appreciation and short-term rental potential.Hope this helps.

Are you offering any special programs, incentives, or advice to help them close out the year successfully? 

I didn't read the website you were referring to earlier, but I know that there are attorneys who specialize only in dog bite cases - because there are laws on the books that give specific penalties that are non-negotiable, related to dog bites.  

And as investors we should know this, but always anticipate higher costs and longer waits.EXAMPLE Breakdown of Costs:Plan Purchase: $1,500Permitting Fees: $2,500-7,500Site Preparation (grading, utilities, foundation): $20,000–$30,000ADUs require separate utility connections for water, electricity, and sewer but you can tap into existing utilities at the primary houseIn Raleigh you CANNOT split lots fee simple, so setting up completely separate utilities would not allow you to section off the ADU as of nowYour ADU must be on a permanent foundation (no wheels, no ability to move the structure)Construction (labor and materials): $100,000–$150,000Low-grade: $150–$180/sq ft averageMid-grade: $180–$220/sq ft averageHigh-end: $220–$250/sq ft averageLandscaping/Finishing Touches: $5,000Total Estimated Cost: $125,000–$200,000You could easily spend $200k+ with super end high finishes, custom designs, complicated sitework, adding a second story or more sqft, etc.

Not sure how they could block a sale but I imagine they told him the central heating unit for the whole complex would soon need replacement so a special assessment would be upcoming.  

We specialize in single family homes, condos, townhouses, and select small multi family homes.