@Attila BertalanI've always liked this one:Success isn't a result of spontaneous combustion.

I plan on having the same company come back in about a month to do another combustion check to make sure all is good.

This is a heated space, and opening it to the outside could cause problems, especially in the winter when pipes may freeze. the HWH was installed by the previous owner just 4 months ago and was inspected.Any thoughts on what the requirements for combustion air are in a situation like this?

I had to point out that if it's unlit, monoxide cannot form as it's a product of incomplete combustion. 

In the most recent recession, unemployment increased more, and to a higher level than the dot-com, and prices had a much more significant drop during the financial crisis than the prior small bump during the dot com bust.

Dot com bust 2.0 will slow the real estate market in the bay area if it happens.http://www.wsj.com/articles/venture-capitalist-sounds-alarm-on-silicon-valley-risk-1410740054Redfin shows the majority of homes in Santa Clara and along the peninsula as Hot.

I am rehabbing a house in Silver Spring MD right now, and there was a vent near the furnace, which I thought was to bring more airflow for combustion.

When you move a gas stove, you might find some building code restrictions must be met on proximity to combustible surfaces.

I'd agree that the attic also needs to be protected as it's likely a combustible area large enough to become a problem should there be a problem.

High end got clobbered as you will recall 50% in some cases.. my brother in law bought a home in LA hills that was worth 2.5 in the mid to late 80's and he got it for 1.2 in 1993.. it bounced back to 2.5 by end of 90's then shot up to 4 mil... then 08 it probably came back a little but I am sure its right back up to 4 to 5 mil..the dot com created spike in value late 90's then the dot com bust dropped prices then they came roaring back and by 2006 to 2007 made new high... then the 08 09 crash.. and it retreated again only to come storming back as you said with the google facebook and all other manner of high tech expansion and profitability.. to make new highs..