Land Grading in King City — Lot Grading, Drainage and Final Grade Prep

OCM Excavation & Construction handles land grading in King City on estate lots, rural acreage and infill builds across King City core, Nobleton, Schomberg and Kettleby. We run rough grading on raw lots, final grading to match a stamped Lot Grading Plan, swale and drainage correction across acreage, and slope work on the rolling Oak Ridges Moraine terrain that defines this Township. We’ve been working King Township sites since 2008. To book a site visit, call 416-317-3090.

Why Land Grading in King City Is Its Own Animal

King is not Vaughan or Richmond Hill. You’re grading half-acre to ten-acre lots, often on clay loam over till, with the Oak Ridges Moraine Conservation Plan covering large swaths of the Township and the Greenbelt Plan overlaying agricultural land around Schomberg and Nobleton. North of the moraine divide your runoff drains to Lake Simcoe under LSRCA jurisdiction; south of it you’re inside the TRCA watershed. That changes which authority signs off on regulated work near valleys, wetlands and watercourses.

The Township of King regulates earthworks through Site Alteration and Fill By-law 2021-039, administered by Development Engineering. Permits are submitted through the King CityView Portal, and as of January 1, 2025 a $500 violation fee applies for non-compliance at final inspection. If your lot sits within the ORM countryside designation, pervious-surface limits and significant-feature setbacks may constrain how much you can regrade and where fill can land. We confirm exact triggers with the Township before we move dirt — assume nothing on a King City lot.

The other thing that makes lot grading in King City different: scale. A typical lot here is 4,000+ m² instead of the 400 m² you’d see in Maple. Runoff that’s a nuisance on a city lot becomes a neighbour dispute on five acres, especially where private septic beds, wells and outbuildings are in play. Grading has to move water away from the house, away from the leaching bed, and off the property without dumping it on the next farm down the line.

Where We Work Across King Township

King City core — infill custom builds and additions on King Road, Keele, Dufferin corridor lots
Nobleton — estate lots off Highway 27 and the 8th Concession, large country properties
Schomberg — village builds, agricultural-to-residential conversions, Greenbelt acreage
Kettleby — heritage village lots and surrounding ORM countryside
ORM countryside designations — moraine lots with significant-feature setbacks
Greenbelt agricultural conversions — paddock-to-yard regrades on rural residential

Types of Grading We Do in King City

Rough grading

Bulk earthworks after foundation backfill: shaping the lot to the design contour, cutting high spots, filling low spots, building up the house pad and driveway base. On King acreage that often means importing or exporting hundreds of cubic metres of fill, and the truck haul is real money because there isn’t a clean-fill site next door.

Final grading for Lot Grading Certificate

For new builds and most additions in King, Development Engineering requires a Lot Grading Plan stamped by a P.Eng or OLS at building permit, and a Lot Grading Certificate at occupancy confirming as-built elevations match the approved plan within tolerance. We do the final grade work — topsoil placement, swale shaping, slope-away-from-foundation, splash pad areas — to the elevations your engineer set so the certificate clears first inspection.

Drainage correction across acreage

Wet basements, soggy paddocks, ponding by the barn, water running from a neighbour’s field onto your driveway. We diagnose the surface flow path, cut intercept swales, regrade low areas and tie problem zones into existing ditches or a French drain where surface grading can’t do the job alone.

Swale construction

Engineered swales along side lot lines and rear yards to direct runoff to a legal outlet — usually a ditch, a stormwater easement, or a natural drainage course. Slopes typically sit at 1% to 2% longitudinal so the swale moves water without scouring.

Slope leveling on rural lots

The moraine isn’t flat. We level house pads, level pool zones, terrace yard areas, and build retaining structures where a 1:3 slope isn’t enough. Anything over 1 metre of grade change gets engineered.

Our Grading Process

Site walk. We look at existing contour, drainage paths, neighbour grades, septic location, well location, ORM/Greenbelt overlay, TRCA or LSRCA jurisdiction.
Plan review. If you have a stamped Lot Grading Plan, we work from it. If not, we’ll tell you whether you need one before the Township will close your permit.
Permits. We confirm whether your work triggers Site Alteration and Fill By-law 2021-039, a conservation authority permit, or sits inside the building-permit lot grading scope.
Rough grade. Bulk cut/fill, pad shaping, driveway sub-base.
Final grade. Topsoil, slopes, swales, splash zones, finish elevations.
As-built check. Your surveyor or engineer shoots elevations and issues the Lot Grading Certificate.

What Affects Grading Cost in King City

Acreage. A half-acre King City infill grades nothing like a five-acre Nobleton estate. Cost scales with area covered and volume of soil moved.
Soil import or export. Truck haul to or from King is long. Clean fill brought in, or excess clay hauled out, is a real budget line.
Drainage complexity. Septic beds, wells, outbuildings, easements and neighbour grades all dictate where water can go.
ORM and Greenbelt overlays. Permits, setbacks and pervious-surface limits add engineering and review time.
Engineer and OLS fees. Lot Grading Plan and Lot Grading Certificate are third-party costs, not part of the grading contract itself.
Conservation authority permits. If any portion of the work is in a TRCA or LSRCA regulated area, expect added review.

For broader scope work — site prep, foundation excavation, services — see our King City excavation page, our GTA land grading overview, and our site preparation services.

FAQ

Do I need a permit to grade my lot in King Township?

It depends on volume, location and overlay. Site Alteration and Fill By-law 2021-039 regulates earthworks across the Township and is administered by Development Engineering. Lots inside the ORM, Greenbelt, or a TRCA/LSRCA regulated area carry extra triggers. Final-grade work tied to a building permit is usually handled under that permit’s Lot Grading Plan. We confirm with the Township before we mobilise.

What is a Lot Grading Certificate and when do I need one?

It’s a sign-off from a P.Eng or OLS confirming that the as-built grades on your lot match the approved Lot Grading Plan. King Township typically requires it on new builds and many additions before final occupancy or permit closure. We grade to the engineer’s elevations so the certificate clears on the first as-built shoot.

How is grading on a five-acre Nobleton lot different from a King City infill?

Scale and water management. On a small infill you’re shaping a few centimetres of fall around a house pad. On a rural acreage you’re managing surface flow across hundreds of metres, working around septic beds and wells, and making sure runoff exits the property at a legal outlet without dumping on the neighbour. Equipment and haul costs scale accordingly.

Can grading fix a wet basement or soggy yard in King City?

Often, yes — when the cause is surface water. Re-establishing positive slope away from the foundation, cutting an intercept swale uphill of the problem area, and giving the water a legal route off the property solves a lot of moisture issues. If the water source is groundwater or a high water table, surface grading alone won’t do it and you’re into weeping tile or French drain territory.

To book a King City site visit, call 416-317-3090.