If a tenant is over that percentage, there is usually no fee (other than install and maintenance).  

I too have an old house and a carpenter stated that some of the damage could have been done to the wood even before it was installed!

I own a SFH in Los Angeles and am thinking of making some upgrades-1) opening up a retaining wall that leads into the backyard and install a sliding glass door2) adding a 10x12 wood floating deckMy questions are:1) How would I calculate the increase in value for these upgrades?

My wife recently purchased an 8000 watt electrical ceramic kiln, 240V 1 phase power, 33.6 amps.I am installing in the basement of my home (owner occupant, not in a municipality that requires an electrician's license):1. 50 amp dedicated breaker in the panel, per kiln manufacturer's recommendation.

It does sound like a lot to me, but if you think that they have to remove the old floors, buy the materials, and install the new floor, maybe it's on point.

I had to install an alarm so he can’t get away with breaking in at night.  

You can install cellulose insulation in the attic as it is newspaper treated with boric acid.

In my case, they will install the meters for a fee, and I pay a plumber to connect.

Most plug numbers into a program and if certain percentages, based on contractor prices, don't match  they pass on a good opportunity... if its your first house... do the work yourself .. make the mistakes , learn what ever repair/install/demo should costs..... then on your 2nd 3rd 4th you know the numbers and can hire half the work out, do the other half to save money and work towards writing checks and closing deals 

We’re hoping to get 3 doors installed in existing doorways to get our AirBnB up and running!