Trenching Services in Richmond Hill — Utility, Drainage, Foundation

OCM Excavation & Construction runs trenching crews across Richmond Hill for water service replacements, gas line trenches, electrical and low-voltage runs, French drains, weeping tile, and foundation lateral work. We cut narrow, straight, and to depth — then backfill clean so your sod, driveway, or interlock goes back the way we found it. Call 416-317-3090 for a site visit and a written quote. We work the full Richmond Hill footprint from South Richvale to Oak Ridges.

What we trench in Richmond Hill

Trenching is narrow linear excavation — usually 12 to 36 inches wide — for anything that has to live below grade. In Richmond Hill that covers a wide range of jobs on tight residential lots:

• Water service lines — 3/4″ or 1″ copper or PEX from the municipal stop into the basement, 4 to 5 ft to invert (below Richmond Hill frost).
• Gas and electrical service — Enbridge spec gas with sand bed and yellow tracer tape; 200A underground feeds with conduit and warning tape.
• French drains and weeping tile — perimeter foundation drainage on clay yards west of Yonge where hydrostatic pressure is a real problem.
• Drainage, irrigation, low-voltage — storm and downspout tie-ins to soakaway or curb; shallow 8 to 18 inch trenches for irrigation, lighting, fibre and coax.

How we trench — machines, shoring, soil

Most Richmond Hill trenches run 4 to 6 ft deep for water and gas, 18 to 36 inches for drainage and low-voltage. Past the 1.2 m / 4 ft mark, Ontario Regulation 213/91 requires sloping, benching, or shoring. We carry trench boxes and hydraulic shores for vertical work near a foundation, fence, or driveway.

Machine selection depends on access. Typical Richmond Hill lots get a mini excavator through the side yard — see our mini excavator services in Richmond Hill. Tight gates get a narrow-track that fits through 36 inches. Bayview Hill and Oak Ridges estate lots take a full-size machine down the driveway.

Soil matters. West of Yonge is heavy clay — slow to dig, holds vertical short-term, doesn’t drain. East has sand and silt pockets that slough. North of Bloomington Road hits the Oak Ridges Moraine: granular and fast, but loose walls need shoring earlier than you’d expect.

Locates, permits, and the boring stuff that protects your yard

Before any blade touches dirt we file an Ontario One Call locate. Standard turnaround is 5 business days, faster on a leak emergency. Hitting an Enbridge line in Richmond Hill is a very expensive afternoon — we don’t shortcut it.

If the trench connects to a municipal water main or sanitary lateral, the City of Richmond Hill plumbing permit and a road-cut permit (crossing the boulevard) are part of the scope. Site Alteration By-law 47-25 can apply on bigger grading work. We pull what’s needed and keep the paperwork on file.

What trenching costs in Richmond Hill

Trenching is priced by linear foot plus machine and crew time, with depth and soil as the main multipliers. As a rough budget frame on Richmond Hill jobs:

• Shallow utility trench (18 to 24 inch depth, irrigation, low-voltage): the low end of the range, fast work in open turf.
• Standard 4 to 5 ft service trench (water, gas, electrical): mid-range, drives most residential quotes.
• Deep or shored trench (over 1.2 m, near foundation, under driveway): top end — shoring, hand work, and restoration drive the cost.

Restoration is where cheap quotes hide problems. Sod, interlock lift-and-reset, and concrete cut-and-patch sit in the original number — no “extra” letter at the end. Call 416-317-3090 and we’ll walk the line before you sign.

Why Richmond Hill homeowners hire OCM

We’re a Richmond Hill–based excavation crew running this city every week. We know which subdivisions still have lead water services (Mill Pond, parts of Observatory), where the clay is worst (South Richvale, Doncrest), and how the Building department wants the paperwork stacked. See our GTA service areas for the rest of our coverage.

Frequently asked questions about trenching in Richmond Hill

How deep does a water service trench need to be in Richmond Hill?

Bury depth has to be below the local frost line so the line doesn’t freeze in January. In Richmond Hill that’s typically 4 to 5 ft to the invert (bottom) of the pipe. The exact number depends on the connection point at the municipal stop and any grade changes between the street and your house.

Do I need a permit to trench across my own yard?

For purely private work, a low-voltage or irrigation trench doesn’t need a permit. Anything that connects to City water, sanitary, or storm, or crosses the boulevard, needs a plumbing and/or road-cut permit. Gas is handled under Enbridge’s process.

Will you damage my driveway, sod, or interlock?

We try hard not to. Interlock comes up in numbered sections and goes back the same way. Sod is cut in strips, set aside on plywood, re-laid same day when weather allows. Concrete and asphalt driveways are saw-cut and patched — patch is in the price.

How long does a typical residential trenching job take?

A straight water service replacement on a typical Richmond Hill lot is a one-day job once locates are clear. French drain around a full foundation, or shored deep trench through a finished yard, runs longer. We give you a target window in writing.

Do you shore deep trenches or just slope them?

Both. Ontario Reg 213/91 lets you slope, bench, or shore a trench over 1.2 m. Sloping eats yard. On tight Richmond Hill lots — near a foundation, fence, or property line — we drop a trench box or hydraulic shore instead.

What about the Oak Ridges Moraine and ravine lots?

North of Bloomington sits on the Oak Ridges Moraine — granular soils dig fast but slough easily, so we shore earlier and use silt fence. East-side ravine lots backing onto Don Valley tributaries fall under TRCA Reg 41/24, adding top-of-bank setbacks.

Get a written trenching quote for your Richmond Hill property

Call 416-317-3090 or use our free quote form and we’ll book a site visit in Richmond Hill, walk the trench line with you, sort out locates and permits, and give you a written price that includes restoration. No surprise letters at the end.

Related Services in Richmond Hill

• Trenching in Innisfil
• Trenching in Bradford
• Trenching in Scarborough
• Trenching in North York
• Drainage & French Drain in Richmond Hill
• Mini Excavator in Richmond Hill
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• All Service Areas