Ask for justification ask to why he needs the 50%.

Use the improvements as justification / reason for the rent increases.A few things to be think about:It may be wise to step up the rent over two years.

I guess it is simply part of the cost of doing a window upgrade.In justification for the better ingress/egress regulation, I have been told it was the result of a fireman having issues evacuating someone out of a unit (so it has good intentions). 

(Don't let this spook you though - just use it as justification when you try to get that purchase price lower!)

Just make sure you stick to those same requirements from now on, unless you have a well-reasoned and supportable justification for changing them.

The justification for that limit from the BP site operator is that an edit can remove context thus rendering some subsequent posts to seem irrelevant, so they limit the window of time for an edit. 

Seeing how the place needs work the justification is that the extra money will go towards repairs.

60 days in advance I send a letter thanking them for being a tenant and outlining any increase and the justification in a general sense, costs on x and y have increased with checkboxes on the bottom including one for will not renew.  

If you don't mind...Did the provided justification to lower include something in the numbers or was it something unconsidered in the property itself?

The water works, it is just if the washer is filling up or something, the faucet will be very weak for those few minutes.