Thanks for your enquiry.
Your Mother should instruct a local Conveyancing Solicitor to firstly carry out what is called a Land Charges Search. Such a search reveals any charge over unregistered properties. The Bank should have removed this charge when the Mortgage was paid off, but it is definitely worth a go, as the search only costs £4.00.
If that doesn't help, your Mother will need to make an application tot he Land Registry for first registration of the property. As the Deeds have been lost, she will need to complete a set Form detailing what she believes has happened to the Deeds aswell as providing as much evidence as she can that she owns the property (copy documents or correspondence from the Solicitor who acted in the purchase) and evidence that she has been living there (old Council tax statements/utility bills).
Depending on what evidence you can provide to the Land Registry, they will either grant what is called "possessory title" or "absolute title". Absolute title is the normal and best title, but in these scenarios, the Land Registry will normally grant possessory title. If so, she will still be able to sell the property, but she will have to pay for what is called a "possessory title indemnity policy" which provides an insurance to the Buyer. Depending on the value of the property this will cost between £150-£250 and is a one off payment.
Your Mother's Solicitor will be able to advise concerning the above.
I hope this assists and sets out the legal position.
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