One clue is to look at pricing of similar houses on Homeaway and see if they have some elevated rates for events.

I've elevated my direct mail campaigns and online advertising to stratospheric heights with little results in Palm Beach and Broward markets.

If he shows only $7,000 for Repairs and Maintenance, then add in $4,000 ( $11,000 less $7,000) showing it as a reserve of $4,000to bring it up to a minimum of 5% Other common expense categories (based on an apartment building-will vary for other income property) Real Estate Taxes, Water and Sewer, Common area utilities, Insurance, Legal and Accounting, Advertising, Telephone, Licenses, Heat (if owner pays), Electricity (if owner pays), Cable TV, Supplies, Elevator expense, Pest control. 1.Adding all of the above expenses results in TOTAL EXPENSE 2.Total Income less Total Expense equals (N.O.I.)

Four stories with an elevator.

If the elevator was really costing that much, the rents should have been higher in the first place.

Here's a link to some pictures on my website [REMOVED] We got it for $1,000,000 5.5% 25 yr 5 balloon 30% downEach unit similar, very nice finishes, 1250 sq ft +/- with a 200 sq ft covered balcony overlooking pool, covered parking, elevator for each building, gated, less than 2 blocks from Biloxi Beach.2 beds 2 bathsRents run 800-890 (4 - 800) (5 - 840) (2 -850) (4 - 890) Total 12,660We started out renting for $800 military and $850 civilianNow we are up to $840 military and $890 civilianAll units currently occupied Expenses Elevators $300/mthPhone 90/mthPool & Lawn $400 mthWater $600Insurance $1833.00Taxes- $1963.75Mgmt $1,266Total Expenses $6,446.75Debt service $4298.63Total payment & expenses $10,745.38$1,914.62 monthly cashflowNotes: Taxes are based on a much higher property value.

I didn't even think to mention, I have a two bedroom rental and it is my best cash flowing rental (although not just because it is a two bedroom).I was three bedrooms and they took one out to put in an elevator!

Might not get ALL of them, but could be an efficient way to get a bunch.Another thought (just tried this) would be to search rental listing sites like zillow or apartments.com and use a criteria to filter out all of the smaller units, elevators or fitness centers seem like they would work well. 

If your groundwater is higher then the slab elevation, you are going to battle this indefinitely until it is installed right.

to value a property, what are you looking at, land size, elevation, location, size of each unit, etc?