There are a few areas to consider here, such as valuations and surveys on the house, solicitors, moving costs and potential stamp duty land tax. Your mortgage product may sometimes (but not always!) have an arrangement or product fee paid to the lender, this can be paid upfront or sometimes added to your mortgage amount. Your adviser will look at whether it’s worth paying this fee to secure a lower interest rate.
Aside from these, don’t forget about the small things we sometimes forget about – will your car insurance charge an admin fee for changing address? If it’s an older house, is there any remedial work you need to do straight away, is the boiler still in good shape? If it’s a newly built house, you may have to purchase bins from the council!