Larkin ConstructionSeptic service company in Markham, ON

Larkin Construction is ranked #24 of 57 septic service companies in Markham by CR Score, with 55 out of 100 as of November 2026. The score weighs reputation, credentials, review volume, recency, availability, trade focus, proximity, claimed profile, partnered and ContractorsRanked reviews. No business can pay to change its rank.

Serves Markham and 11 towns within 40 km: Uxbridge, Pickering, Aurora, East Gwillimbury, Newmarket, Ajax, Richmond Hill, Scarborough, Vaughan, King and Willowdale. The list is based on the business's location and the usual service radius for septic and sewer service. Confirm your address is covered when you call.

Larkin Construction has a rating of 5.0 from 3 Google reviews. The CR Score adjusts the star rating for review count, so a high rating from a few reviews counts for less than the same rating from many.

Call Larkin Construction on (905) 642-0384. The business is at 2800 Concession Rd 2, Whitchurch-Stouffville, ON L9P 0K3, Markham, ON. Its website is linked in the key facts on this page. Ask for a written estimate before any work starts.