R.T.Warwick Const. Share: Construction & RenovationHomeowner Services Visit Website 131 Wild Grape Lane Perth Ontario Perth, Ontario K7H3C7 (613) 267-6241 R.T. Warwick Contractors About Map About Owned and operated by Randall and Rosalind Warwick. Maintaining a moderate size company in order to assure our clients the highest level of quality control and that personal touch to every detail. What's Nearby? Distance: 5 10 15 20 25 50 km.