I'd like to add one more:Underestimating the poor credibility relayed by bad design.

That whenever any Form of Government becomes destructive of these ends, it is the Right of the People to alter or to abolish it.But, when a long train of abuses and usurpations, pursuing invariably the same object, evinces a design to reduce them under absolute despotism, it is their right, it is their duty, to throw off such government, and to provide new guards for their future security.Thomas Jefferson - The Declaration of Independence

In appliances, use only appliance lightbulbs (small 40 watt bulbs designed for use in ovens, stove hoods andrefrigerators). 

Now I hear we may be designated as "flippers" and ALL our rental income and sales might be designated as ordinary income.

Are you seeking to acquire and convert existing via renovations or design and develop new?

We had another agency designed to monitor business.

There are tradeoffs with any protection strategy you design.

There is nothing inherently wrong with a bi-level (or any other specific design/layout) unless it is uncommon for the neighborhood or overly-specific to a particular owner.Most of my rehabs are split-levels and I never have any problem selling them...this is because split-levels are common in my area and especially the neighborhoods where I buy.

Turned out the faucet had a lifetime warranty, so the new one was free (and much more strongly designed.)

I've seen what was intended to be a site designed for my own personal use, turn into a site that has helped millions.