Firsland Farm is situated approximately 7.4 miles southwest of Burgess Hill, 11.9 miles northwest of Brighton and approximately 3.7 miles to the northeast of Henfield Village. The estate entrance is located on the northern side of Henfield Road (B2116), between Wineham Lane and Twineham Lane. The A23 linking the M23 and A27 lay approximately 2.7 miles to the immediate east.