Thank you for your question
My name is Clare
I shall do my best to help you but I need some further information first.
How long have you lived together and who lives in the property in question?
How long have you and your wife lived together in total?
How much is the house worth and how much is outstanding on the mortgage?
What is the value of all the other assets?
Are there any children involved?
What capital (other than your mother's house) did you each bring to the marriage?
Sorry - what I mean is where did the money for the matrimonial home come from
I will pick this up again in the morning
How much was her Inheritance?
So she owned a property with her mother just as you own one with yours.
Her property became the matrimonial home.
There is equity of £650K in your house and £510K in the matrimonial home.
What income do you each have?
What offers of settlement have there been so far?
The fact that the property you shared with your mother was always separate means that the Courts will treat it differently to the house in which you live.
However the fact that you do own that share means that it is likely that your wife will be awarded a larger share of the matrimonial home - so maybe a 60/40 split in her favour - or something similar
I hope that this is of assistance - please ask if you need further details