Site Preparation in Newmarket — New Build, Addition, Foundation

OCM Excavation & Construction handles site preparation in Newmarket for new builds, second-storey additions, foundation digs, garages, and detached structures. We clear, strip, cut, fill, grade, and trench so your builder rolls onto a clean, level, properly compacted pad. From Glenway to Stonehaven, Summerhill Estates to the Davis Drive corridor, we work to York Region grading standards and Newmarket by-laws. Call 416-317-3090 for a site walk and a written scope.

What site preparation in Newmarket actually covers

“Site prep” is a stack of distinct trades we sequence in the right order. Skip a step and the foundation contractor pays for it later. Our standard Newmarket scope:

Clearing & grubbing — trees, stumps, roots, brush, old concrete pads, derelict sheds. Tree removal coordinated with the Newmarket Private Tree Protection By-law (any tree over 20 cm DBH on private property needs a permit).
Topsoil strip & stockpile — typically 150-300 mm of organics off the footprint, stockpiled on-site for re-spread or hauled off.
Mass excavation — basement, crawl, slab, or footing cut to engineered depth, hauled off in tandems.
Cut and fill — sloped Stonehaven and Summerhill lots usually need either fill imported or surplus hauled. We balance the site where the grade allows it.
Engineered fill & compaction — Granular A or B placed in 200-300 mm lifts, compacted to 95-98% SPMDD where structural fill is required.
Service trenching — water, sanitary, storm, gas, hydro, communications.
Rough grading — to the lot grading plan stamped by your surveyor or designer.

Newmarket-specific constraints we plan around

Three Newmarket-specific issues shape almost every site preparation job here:

1. LSRCA, not TRCA. Newmarket sits in the Lake Simcoe watershed. Any work near the East Holland River corridor or its tributaries is regulated by the Lake Simcoe Region Conservation Authority under Ontario Regulation 41/24. If your Newmarket lot backs onto a creek or wetland, we confirm setbacks with LSRCA at 905-895-1281 before we mobilize. Permits add lead time — we factor it into the schedule.

2. Trees over 20 cm DBH. Newmarket’s Private Tree Protection By-law requires a permit to remove any tree on private property over 20 cm diameter measured at 1.4 m above grade. Dead, dying, or hazardous trees still need a permit but the fee is typically waived. We coordinate the permit and the arborist report when one is required.

3. Older Newmarket subdivisions = tight lots. Historic Downtown, Glenway, and the Davis Drive corridor often mean 12-15 m frontages, mature canopy, narrow side-yards, and overhead wires. We size equipment to the access — sometimes a mini-ex and a tandem, not a full-size hoe and a tri-axle.

Our process from first call to handover

Site walk — we meet you in Newmarket, look at access, neighbours, trees, grade, and locate stakes if you have a survey.
Written scope & fixed-price quote — clearing volumes, cut depth, soil class assumptions, haul-off counts, granular tonnage, compaction spec.
Locates & permits — Ontario One Call, tree permit, LSRCA where applicable, building permit coordination with your designer.
Erosion & sediment control — silt fence, mud mat, catch basin protection, before any cut.
Execution — clearing, strip, excavation, services, structural fill, compaction tests, rough grade.
Handover — pad signed off to your builder or foundation crew with elevations confirmed.

Typical Newmarket site preparation timelines

Garage or small addition pad — 2 to 4 days on site.
Full basement excavation, typical 12 x 15 m footprint — 3 to 6 days including services.
Teardown lot, new custom build — 1 to 3 weeks from clearing through rough grade.
Estate-fringe Stonehaven or Summerhill lot with cut/fill balancing — 2 to 4 weeks.

Weather, soil conditions, conservation authority review, and tree permit lead times can shift these ranges. We give you a firm schedule once locates and permits are in hand.

Why Newmarket builders and homeowners hire OCM

We run the prep, not subcontract it. Same crew from clearing through grading.
We know which Newmarket neighbourhoods are LSRCA-sensitive and which are simple.
We coordinate with your designer, surveyor, and framer so there are no handover gaps.
Written, fixed scope. No surprise extras for “unforeseen soil” unless we hit genuine refusal.
We work across the GTA — see all of our service areas — but we know Newmarket lots specifically.

Related Newmarket services

If your Newmarket project includes a backyard pool as part of the new build or addition, see our companion page on pool excavation in Newmarket. We can sequence the pool dig with the foundation excavation to save mobilization costs and protect the lawn from a second round of equipment traffic.

Frequently asked questions

Do I need a building permit before you start site preparation in Newmarket?

For the foundation excavation itself, yes — the Town of Newmarket needs a building permit issued before footings or foundation work starts. Clearing, demolition of accessory structures, and tree removal can sometimes proceed earlier under separate permits. We confirm sequencing with your designer so nothing on site triggers a stop-work order.

Does my Newmarket lot need LSRCA approval?

If your property is anywhere near the East Holland River, a tributary, a wetland, or a regulated slope, yes. LSRCA regulates these areas under Ontario Regulation 41/24. We check the LSRCA screening map during the quote stage. If approval is needed, expect added lead time. LSRCA can be reached at 905-895-1281.

What if there are large trees on my Newmarket build site?

Any tree on private property in Newmarket over 20 cm DBH (diameter at breast height, measured at 1.4 m) needs a permit before removal. Dead, dying, or hazardous trees still need a permit but the fee is typically waived. We coordinate the permit application, the arborist report when required, and tree protection fencing during construction.

Can you handle cut-and-fill on a sloped Stonehaven or Glenway lot?

Yes. Many Newmarket lots in Stonehaven, Summerhill Estates, and the older Glenway sections grade noticeably from front to back. We balance cut and fill on site where the geometry and soil allow it, which cuts haul-off costs and import tonnage. Where structural fill is required under the foundation, we place engineered granular in lifts and compaction-test it.

How early should I book site preparation for a Newmarket spring build?

For a March-May start, lock the booking by December or January. Spring is the busiest window in York Region — equipment, hauling, and LSRCA reviews all back up at the same time. The earlier we have your drawings and survey, the more flexibility you get on start date and pricing.

Do you work on Newmarket teardown-and-rebuild projects?

Yes. Teardown lots in Historic Downtown and along Davis Drive are a regular part of our Newmarket workload. We coordinate with the demolition contractor, remove old foundations and slabs, fill and compact the void, and prep the lot for the new build. A single coordinated crew avoids the gap that often costs homeowners weeks between demo and new dig.

Book your Newmarket site preparation walk-through

Call 416-317-3090 or request a free quote. We’ll meet you on the Newmarket lot, walk the access and grade, and follow up with a fixed-price written scope so you can hand it to your builder, your bank, or your designer with confidence.