To find the cache you need to find the house on Kingswood Drive with 5 garage doors. Take the street number, which you can find from the street, multiply by 24 and add 9. Use the the result divided by 1000 for the minutes of the latitude.
Next look for the house on Kingswood Crescent with a "widows walk". Take the street number and multiply by 90. Use the result divided by 1000 for the minutes of the longitude.