Here is a histogram showing the frequency of appreciation by percentages. 

There should be some form of regular interest payments that are similar in frequency and rate to what your brother should expect if he were to go to an unrelated party in the open marketplace.

Due to the fact that batteries go bad and wireless systems can get frequency interruptions, hard wired systems are the most reliable and desired by fire marshals and Inspectors.

@Blake Edwards hey Blake,What frequency are the meetings held and are they consistent?

Change your search strategy, change your criteria, change your frequency of searching.

https://www.thetaxadviser.com/issues/2012/dec/clinic-story-06.htmlIn determining whether the income should be classified as ordinary income or capital gain, the court evaluated nine criteria: (1) the taxpayer’s purpose in acquiring the property; (2) the purpose for which the property was subsequently held; (3) the taxpayer’s everyday business and the relationship of the income from the property to the taxpayer’s total income; (4) the frequency, continuity, and substantiality of sales of property; (5) the extent of developing and improving the property to increase sales revenue; (6) the extent to which the taxpayer used advertising, promotion, or other activities to increase sales; (7) the use of a business office for the sale of property; (8) the character and degree of supervision or control the taxpayer exercised over any representative selling the property; and (9) the time and effort the taxpayer habitually devoted to sales of property.

I would say the frequency of walkthroughs should be every 6-9 months, unless there are signs of the property not being taken care of and then they should be more frequent. 

I run across a lot of investors that also plan to stay in the unit.....depending on the time of year and frequency, this can make or break the deal too.As far as appreciation- in this area, newer builds certainly hold their own but I feel like they are long-term investments.

Those activities just cannot intersect in any way with your IRA's investments in real estate.A LLC under the IRA is not required, but is generally a much more efficient tool for holding assets like real estate that generate a frequency of transactions or anything time-sensitive in nature.You can in a limited sense administer a plan held property; executing contracts, paying for expenses and receiving income into the plan.  

The consensus is putting some insulation between the joists will help with high frequencies - voices.