I think it depends on the relationship, the quality of work, and the frequency and amount of the price increase.

This document spells out all the terms of the loan: the amount, the interest rate, the payment amount (if there is one), the frequency of the payments (if there are any), the length of the loan, the balloon payment (if there is one), when a loan will be considered in default, who pays for insurance (and taxes, and maintenance, etc.), if an escrow is required, what happens if a party responsible for payments doesn't make them, etc., etc., etc.

However, it seems to be one that is used with frequency  - but unsure of how it's received by flippers.I've recently been using the BP Wholesale Calculator which is far more in depth than the formula above and includes data such as closing costs, agent commission and holding fees.  

What sort of renters are you hoping to attract e.g. turnover frequency can be impacted by unit as well as location.  

I also include in each welcome packet a step by step for how to call the power company and report an outage as well as how to reset a flipped breaker.This tenant has been short term so far and has had issues paying rent every month, and makes excessive requests (in frequency and in "reasonable-ness").The tenant is not responsible for deciding if a handyman is needed, but if one is called out and it isnt a landlord responsibility, shouldn't that go back to the tenant? 

For questions on mailing frequency, what to say etc.

Insurance actuaries rare them on par with accountants and engineers in terms of claims frequency.

Here is a look of the real estate investment return calculator that we used to evaluate our rental properties;PurchasePurchase price$ Cash invested$ Real estate value: (0-200) % DebtLoan amount$ Interest rate: (0-30) % Term: (years)(1-50) Closing costs$ IncomeGross rental income$ Income frequency Annual rent increases: (0-10) % ExpensesAnnual property tax$ Annual insurance$ Annual maintenance$ Annual increase in expenses: (0-10) % Other InformationDuration of Analysis: (years)(0-20) Realtor fees upon future sale: (0-30) % Annual appreciation rate: (0-50) % Marginal tax bracket: (0-50) % Long-term capital gains bracket: (0-50) %Our formula is based on the annual income of the property minus annual expenses and 1.5 month’s rent (for vacancy) divided by twelve.

Had a near collision with a plane that was taking off on another frequency.

My final question is regarding frequency of mailings.