When I moved here six years ago, I sold a large family house and paid off the mortgage. This enabled me to take a lower paid, but stress free, job and then to go part time after a few years. As the interest rate was so low, I decided to use all the equity to buy my current bungalow.
My plan, now I have retired, is to spend my lump sum savings and then when I need more cash to top up my pension, to sell up and move into an apartment. At the moment I could buy an apartment for approx half of what I could sell my bungalow for - releasing a large amount for me! I have no emotional ties to this bungalow so am looking forward to my next move. My financial adviser thinks it is a very astute plan!
I think a lot depends on how much cash you would actually gain after moving costs to help you decide if it is worth all the effort. I suggest you do your sums and then go for it if it pans out. Moving here, over 100 miles from my last house, was the best thing I did!