Yes, you can put your house up for sale - if your mortgage provider agrees. You would normally need to pay off your secured homeowner loan before you move house and take out a new mortgage. This is because the loan was originally approved based on your home and individual circumstances at the time, which will change if you move.
If affordable, you could either:
Pay off the loan outright before you sell your property
Use any profit from your house sale to pay off your existing mortgage and loan balance
Please note that some mortgage providers will apply early repayment charges if you pay off your mortgage before your existing deal ends. These charges can also apply to secured loans.
An alternative option could be to transfer your secured loan to your new property – but not all lenders will allow this. Whether this option is available depends on the lender and your individual circumstances. An admin fee may apply. Also, you’d need to check if it’d be a straight swap or not. If you need to renegotiate the terms of the loan, you could potentially end up paying more overall.