Need the following info:
1) What profit would you clear on your existing house after closing costs, agent fees, taxes, yada yada, but before any possible capital gains taxes? What does Zillow say it's worth now?
2) How much cheaper is the exurban house? $125k, $250k, $500k?
3) Would you play enough hours of backyard games in the next 2-3 years to make up for the hours spent trading houses and moving? Note that the vast majority of people with large back yards don't even enter those back yards in a typical day and only use it when the grass needs mowing. Lawns are a "look" for most of us.
I reluctantly agree with
@robartsd and
@partgypsy that you probably have at least as much time as it would take to grab the capital gains exclusion. And that's coming from a person who wouldn't touch PNW bubble real estate with a very long stick and who suspects that mortgage rates will be 1-2% higher in a year or two.
If you have $250k in gains, a 15% long term capital gains tax would amount to $37.5k. I think the odds of your house dropping at least $37.5k in the next year are a tiny bit less than the odds of your house appreciating by more than that. I would not want to go long on the housing bubble at this stage, but I would probably take this 10 month bet (hell, closing will consume 2 of those months). I would especially take it if my only other option was to gamble a smaller amount on another piece of bubble area real estate.
Suppose the chance of a 50% market crash is 20% in the next year.
Suppose the Seattle house is now worth $1M.
The risk of the Seattle house is $500k.
Suppose the exurban house is now worth $600k.
the risk of the exurban house is $300k.
Thus, for $37.5k in taxes you get:
-$365k (1M-600k-45k) equity extracted and invested elsewhere, minus closing/moving costs.
-$200k (500k-300k) in housing bubble risk reduction. The PV of this $200k at 20% odds is $40k.
-40% less leverage if housing prices continue to go up. The PV of 400k less leverage at 80% odds of prices going up, let's say, 5% is $-16k.
I wish there was a way to hedge the risk of the housing bubble popping and staying in the local market, but there's not. The only way to escape the bubble is to move to a LCOL area. I suppose you could also use futures to short treasuries or options to short TLT, because if rates increase substantially the housing market and long-duration treasuries are toast.