The dangers of lead-based paint had begun to circulate by the late 1800s and early 1900s, so some manufacturers stopped using lead in paint earlier than others.With an internet search, I found this brief chronological history of the use of lead-based paint in the United States:* Use of white lead began in the Colonial times and ultimately peaked in 1922.* In 1951, Baltimore banned the use of lead pigment in interior paint in Baltimore housing – the first such restriction in the country.* In 1955, the industry, working with public health officials and organizations, adopted a voluntary national standard to prohibit, in effect, the use of lead pigments in interior residential paints.* Through the 1950s and 1960s, the use of exterior lead-based paint declined significantly, and ended by the early 1970s.* In 1971, the federal Lead Poisoning Prevention Act was passed.* In 1978, the federal government banned consumer uses of lead paint.

To be safe, you may wish to:- sell the property at a public sale- publish notice of the sale in a prominent place, including a newspaper with daily, local circulation, and-send the tenant a final notice that states where and when you will sell the property.If the tenant owes you money for back rent, property damage, or reasonable storage costs -- and the tenant’s security deposit didn’t cover everything -- you can take the balance out of the sale proceeds.

You are saving 3-4% on the mortgage by taking cash worth 10% out of circulation.

I always suggest 7% minimum, ideally 10% if you want to move quickly and keep buyers circulating through the listing.  

The zoning is not really the issue, moreso ingress/egress, circulation, setbacks... some other requirements by code for building a building on a very small lot.

The boiler then ran out of water circulating through the heating system, damaging the boiler. 

@Rob BelandThis is all I found:16) Delete sub-section 10.12.2 and replace it with the following:10.12.2 Prohibited AppliancesThe following equipment shall be prohibited:(a) gas range ovens, broilers, or top burners for space heating purposes;(b) gas ranges with match-lit ovens;(c) any commercial cooking range without a listed oven safety pilot; and(d) appliances not in compliance with the statutory requirements of M.G.L. c. 148, §25E.It came from here: http://www.mass.gov/ocabr/licensee/dpl-boards/pl/r...I have always believed the intent was to take these out of circulation when they fail, though I can't for the life of me find where it says they cannot be repaired. 

I am planning on circulating through my own network to see if I know any independent brokers, but if not I am likely going to have to turn to one of the bigger offices.

The number of dollar bills in circulation is no longer a measure of anything but the number of trees we've recently killed, bleached, and slathered with green ink.

It's probably growing because the house was empty and the air was not given a chance to circulate.