The parties need to:

Work out the value of assets & debts at date of separation (or a later date may be applicable).

Obtain surrender value from date of marriage to separation (or a later date may be applicable).

Pensions are considered as part of the assets to split between the parties. Obtain cash equivalent value from date of marriage to separation (or a later date may be applicable).

Usually a split can be agreed, otherwise assess second hand value. Antiques may have to be valued.

The higher the mortgage & property values the harder it will be for one party to take over the house and buy out the other party.