Two of my three sons still live in FMH, which is currently up for sale. one is in his final year of university and the other is doing an apprenticeship with day release at college. As they are both over 18 will all equity by a straight 50/50 split even though I provide for them and maintain the FHM. my ex earns over twice my wage. I earn £20k per annum. He contributes £200 per month for the one at college only, this is now half what he was paying since my youngest left full time college and took on an apprenticeship.
I''m not qquite clear what you are asking, but if the question is whether the equity will be split 50/50 becuase your sons are adults the answer is no, not necessarily.
You / The Court need to look at the whol finacial picture. If you ex earns more than you, then it is likely for there to be an adjustment to take account of that. This could be by way of spousal maintenance or it could be by way of an unequal split of the capital, giving you a larger share.
You would need to look at things such as your reasonable housing needs, your mortage capacity and the same things for you ex to work out what is likely to be a fair settlement.