I recently received verbals to Northern VA (Chantilly) in the spring of 2017 and wanted to see if anyone here has insight into the area with regards to rentals. Looks like traffic is the real deal there. Trulia has a commute time heat map that's been invaluable to narrow my focus. So far it looks like we can either get a small condo/townhome in Reston, a typical SFH in Chantilly/Centreville, or a much larger SFH out towards Haymarket. However, it'd be invaluable to hear what others who've been up here have to say. I have also heard recently that I-66 is going to be undergoing significant construction, which will change the traffic patterns, so I'm avoiding it as a result. If there are other infrastructure changes or significant events like that happening in the next several years, I'd like to know to plan ahead. Thanks!
As someone who has worked at your future organization in Chantilly for a long time now, and watched the traffic patterns change over that time, I'd highly recommend dialing up Google Maps with the traffic filter on at (local) rush hour for a few days in a row to get a sense of where the bottlenecks are. My personal recommendation would be to wave off of anything that requires you to be west of the area - the traffic is really, really brutal. (It would take a whole lot of $$ to get me to live in Haymarket.) Reston is pretty sweet drive-wise, and there are multiple routes that can get you there if things start getting dorked up. It's also got some good dining options, and new Metro access. There are a few sketch areas in Reston, though, so make sure you do your due diligence. The same is true of Herndon, which has some good opportunities but also some real downers. The Chantilly area itself is fine if you have a family and want a SFH. Vienna (where I live) and McLean are also very nice, but the prices start getting jacked pretty quickly.
As others have said, though, it's about the commute. Chantilly beats the crap out of the Pentagon or DC for a commute, but you still need to choose wisely. (BTW, PM me and I can give you some organizational gouge...).