St Lawrence doesn't have a carpark within the village. You will have to rely on on-street parking around the village, which is free. There is parking along Undercliff Drive, where the road ends near the 2014 landslip.
There is an unofficial carpark on Steephill Road, on the corner of Love Lane. It's a 25 min walk into St Lawrence village, but is a perfect spot if you wish to visit Steephill Cove, although parking is limited. It's someone's house, but they have given over an area out the front and to the right of their house for the public to use. There is a charge - it's an honesty box bolted to their garage door.
You can also park at Ventnor Botanic Garden - similar distance to the village - and there is a charge. They have numberplate recognition cameras, so be sure to punch your number into the machine in the cafe, otherwise you will get a fine.
PLEASE BE CONSIDERATE OF HOME OWNERS AND PEOPLE'S PROPERTY WHEN CHOOSING WHERE TO PARK.