Concrete foundations across Toronto and the GTA
WSIB cleared|$5M liability insured
WSIB cleared|$5M liability insured

Concrete foundation and structural experts

Concrete contractors in Toronto and the GTA

Priced in 48 hours. Poured on the date we promise.

For new homes, additions and garden suites. Our own forms and crews, from footings to finished slab on one schedule.

Price in 48 hoursPour date in writingEngineer-reviewed underpinning

Get a free quote

Takes 30 seconds. Upload your drawings for a faster price. We reply the same day.


Prefer to talk? Call (416) 785-7838

Our own forms

No waiting on rental stock or another crew

Pour date in writing

The date we give you is the date we pour

WSIB cleared and insured

$5 million liability, certificates on request

Supply and install

Custom rebar and concrete at bulk pricing, one source

What we build

Footing, foundation and framing contractors

One contractor for the structure of your home, from the footing up: concrete foundation work, slabs, underpinning and framing.

Footing forms reinforcing, concrete footings in Leaside by Grand Structural Services

Concrete footings and piers

Strip, pad and stepped footings and pier foundations, inspected before every pour.

Foundation walls waterproofed, poured concrete foundation walls in Brampton by Grand Structural Services

Foundation walls

Poured concrete foundation walls for new homes, additions and garden suites.

Slab finished, concrete slabs in Hamilton by Grand Structural Services

Garage and basement slabs

Suspended garage slabs, slabs on grade and basement floors in concrete.

Underpinning lowered basement, underpinning and basement lowering in Leaside by Grand Structural Services

Underpinning and basement lowering

Underpin the foundation to lower your basement. Engineered and permitted, with walkouts built in when the project includes one.

Home framing toronto, house framing in Orillia by Grand Structural Services

House and structural framing

Floors, walls, roofs, engineered beams and posts for custom homes, second storey additions, garden suites and laneway houses.

Our main work

Footings and foundation walls we pour

Our main work: footings and poured concrete foundation walls for new homes, additions and garden suites across Toronto and the GTA.

Footings formed home, concrete footings in North York by Grand Structural Services

Footings formed for a new home

Foundation walls stripped, poured concrete foundation walls in Vaughan by Grand Structural Services

Foundation walls just stripped

Stepped footings, concrete footings in Newmarket by Grand Structural Services

Stepped footings on a sloped lot

Wall forms numbered, poured concrete foundation walls in Scarborough by Grand Structural Services

Our wall forms, set and braced

Footings formed, concrete footings in Orillia by Grand Structural Services

Footings poured and ready for walls

Foundation walls waterproofed trench, poured concrete foundation walls in Mississauga by Grand Structural Services

New walls waterproofed before backfill

Footing and wall forms, concrete footings in the Kingsway by Grand Structural Services

Footing and wall forms on one site

Footing rebar grid, concrete footings in Etobicoke by Grand Structural Services

Footing rebar set before inspection

Footings layout, concrete footings in Ajax by Grand Structural Services

Footing layout checked against the survey

Why our own forms matter

Looking for a contractor for foundation work who shows up on the day? Most foundation jobs slip because the forms or the crew aren’t ready. As concrete foundation contractors with our own forming system and our own crews, we set the pour date and we keep it.

We also do the framing. The hand-off from foundation to framing doesn’t wait on a second company.

Forming system crane truck, poured concrete foundation walls in Burlington by Grand Structural Services

How we work

Every step, every inspection

One crew and one schedule from the drawings to the framing. Every stage is checked against the drawings, and every inspection is booked before the next pour.

Footings layout, concrete footings in Ajax by Grand Structural Services
Phase 1

Layout and footings

  1. 1
    LayoutChecked against the survey and the drawings before we form.
  2. 2
    FootingsFormed and reinforced, inspected by the City, then poured.
Foundation walls stripped, poured concrete foundation walls in Vaughan by Grand Structural Services
Phase 2

Foundation

  1. 3
    Foundation wallsPoured on our own forms, with waterproofing and weeping tile.
  2. 4
    Strip and checkForms off, walls checked for level and square.
Framing infill, house framing in the Kingsway by Grand Structural Services
Phase 3

Slabs and framing

  1. 5
    Garage and basement slabsBase, vapour barrier, reinforcing and a level finish.
  2. 6
    FramingFloors, walls and roof, then the framing inspection.
Underpinned basement finished slab, concrete slabs in Lawrence Park by Grand Structural Services
Underpinning and basement lowering

Lowering a basement follows its own steps

Ready for a price? Send your drawings and we’ll reply the same day.

Footings, foundation walls, slabs, underpinning and framing. Our own forms and crews, pour date in writing.

For homeowners, builders and designers

Send your drawings. Get a foundation price and a pour date.

Upload your drawings and tell us when excavation is done. We’ll send a priced breakdown of your footings, foundation walls and slab, plus the first date our forms and crew are free, within 48 hours.

No cost, no obligation. No drawings yet? We can price from a site visit.

Recent work

Project foundation new home, Grand Structural Services, Toronto
Project footings new home, Grand Structural Services, Toronto
Project foundation new home, Grand Structural Services, Toronto
Project footings new home, Grand Structural Services, Toronto
Project foundation new home, Grand Structural Services, Toronto
Footing rebar mat, Grand Structural Services, Toronto
Project rear addition basement, Grand Structural Services, Toronto
Crew tying rebar, Grand Structural Services, Toronto
Project rear addition basement, Grand Structural Services, Toronto
Concrete footings, Grand Structural Services project photo 10
Project rear addition basement, Grand Structural Services, Toronto
Concrete footings, Grand Structural Services project photo 12
Project rear addition basement, Grand Structural Services, Toronto
Footing forms reinforcing, Grand Structural Services, Toronto
Wall forms on site, Grand Structural Services, Toronto
Concrete footings, Grand Structural Services project photo 16
Large foundation walls, Grand Structural Services, Toronto
Concrete footings, Grand Structural Services project photo 18
Project deep walls, Grand Structural Services, Toronto
Footings formed new home, Grand Structural Services, Toronto
Project deep walls, Grand Structural Services, Toronto
Concrete footings, Grand Structural Services project photo 22
Project infill foundation, Grand Structural Services, Toronto
Concrete footings, Grand Structural Services project photo 24
Project infill foundation, Grand Structural Services, Toronto
Footings formed wide, Grand Structural Services, Toronto
Project infill foundation, Grand Structural Services, Toronto
Concrete footings, Grand Structural Services project photo 28
Project large home foundation, Grand Structural Services, Toronto
Footings in excavation, Grand Structural Services, Toronto
Project large home foundation, Grand Structural Services, Toronto
Stepped footings, Grand Structural Services, Toronto
Project large home foundation, Grand Structural Services, Toronto
Footing trench beside house, Grand Structural Services, Toronto
Project waterproofed foundation, Grand Structural Services, Toronto
Footing pour finish, Grand Structural Services, Toronto
Project waterproofed foundation, Grand Structural Services, Toronto
Concrete footings, Grand Structural Services project photo 38
Poured concrete foundation walls, Grand Structural Services project photo 39
Concrete footings, Grand Structural Services project photo 40
Poured concrete foundation walls, Grand Structural Services project photo 41
Footings layout, Grand Structural Services, Toronto
Poured concrete foundation walls, Grand Structural Services project photo 43
Concrete footings, Grand Structural Services project photo 44
Poured concrete foundation walls, Grand Structural Services project photo 45
Footings poured, Grand Structural Services, Toronto
Wall forms in trench, Grand Structural Services, Toronto
Footing reinforcing cage, Grand Structural Services, Toronto
Wall forms residential street, Grand Structural Services, Toronto
Concrete footings, Grand Structural Services project photo 50
Foundation wall corner, Grand Structural Services, Toronto
Concrete footings, Grand Structural Services project photo 52
Deep foundation walls, Grand Structural Services, Toronto
Footing and wall forms, Grand Structural Services, Toronto
Poured concrete foundation walls, Grand Structural Services project photo 55
Footing rebar grid, Grand Structural Services, Toronto
Gssl wall forms numbered, Grand Structural Services, Toronto
Poured concrete foundation walls, Grand Structural Services project photo 58
Poured concrete foundation walls, Grand Structural Services project photo 59
Foundation walls stripped, Grand Structural Services, Toronto
Poured concrete foundation walls, Grand Structural Services project photo 61
Poured concrete foundation walls, Grand Structural Services project photo 62
Foundation wall drainage layer, Grand Structural Services, Toronto
Poured concrete foundation walls, Grand Structural Services project photo 64
Poured concrete foundation walls, Grand Structural Services project photo 65
Foundation waterproofing, Grand Structural Services, Toronto
Poured concrete foundation walls, Grand Structural Services project photo 67
Poured concrete foundation walls, Grand Structural Services project photo 68
Foundation wall, Grand Structural Services, Toronto
Poured concrete foundation walls, Grand Structural Services project photo 70
Poured concrete foundation walls, Grand Structural Services project photo 71
Foundation walls city lot, Grand Structural Services, Toronto
New home foundation insulated, Grand Structural Services, Toronto
New home foundation, Grand Structural Services, Toronto
Poured concrete foundation walls, Grand Structural Services project photo 75
Poured concrete foundation walls, Grand Structural Services project photo 76
Poured concrete foundation walls, Grand Structural Services project photo 77
Poured concrete foundation walls, Grand Structural Services project photo 78
Poured concrete foundation walls, Grand Structural Services project photo 79
Foundation walls waterproofed trench, Grand Structural Services, Toronto
Poured concrete foundation walls, Grand Structural Services project photo 81
Poured concrete foundation walls, Grand Structural Services project photo 82
Poured concrete foundation walls, Grand Structural Services project photo 83
Poured concrete foundation walls, Grand Structural Services project photo 84
Foundation walls waterproofed, Grand Structural Services, Toronto
Foundation walls winter, Grand Structural Services, Toronto
Poured concrete foundation walls, Grand Structural Services project photo 87
Foundation walls between houses, Grand Structural Services, Toronto
Poured concrete foundation walls, Grand Structural Services project photo 89
Foundation walls rear addition, Grand Structural Services, Toronto
Poured concrete foundation walls, Grand Structural Services project photo 91
Poured concrete foundation walls, Grand Structural Services project photo 92
Poured concrete foundation walls, Grand Structural Services project photo 93
Poured concrete foundation walls, Grand Structural Services project photo 94
Poured concrete foundation walls, Grand Structural Services project photo 95
Poured concrete foundation walls, Grand Structural Services project photo 96
Poured concrete foundation walls, Grand Structural Services project photo 97
Project basement slab, Grand Structural Services, Toronto
Project basement slab, Grand Structural Services, Toronto
Basement slab new home, Grand Structural Services, Toronto
Basement slab prep, Grand Structural Services, Toronto
Basement slab radiant prep, Grand Structural Services, Toronto
Slab finished, Grand Structural Services, Toronto
Concrete slab, Grand Structural Services project photo 104
Basement slab pour, Grand Structural Services, Toronto
Slab edge finish, Grand Structural Services, Toronto
Underpinned basement finished slab, Grand Structural Services, Toronto
Slab header, Grand Structural Services, Toronto
Concrete slab, Grand Structural Services project photo 109
Basement slab finishing, Grand Structural Services, Toronto
Underpinning new basement slab, Grand Structural Services, Toronto
Underpinning pin excavation, Grand Structural Services, Toronto
Underpinning lowered basement, Grand Structural Services, Toronto
Underpinning section dig, Grand Structural Services, Toronto
Underpinning new basement slab, Grand Structural Services, Toronto
House over new basement, Grand Structural Services, Toronto
Underpinning plumbing rough in, Grand Structural Services, Toronto
Foundation waterproofing, Grand Structural Services, Toronto
Underpinning under slab plumbing, Grand Structural Services, Toronto
Underpinning basement gravel base, Grand Structural Services, Toronto
Underpinning shored basement, Grand Structural Services, Toronto
Underpinned basement finished slab, Grand Structural Services, Toronto
Project framing new home, Grand Structural Services, Toronto
Project infill framing, Grand Structural Services, Toronto
Project infill framing, Grand Structural Services, Toronto
Project addition framing, Grand Structural Services, Toronto
Project addition framing, Grand Structural Services, Toronto
Project new home framing, Grand Structural Services, Toronto

For builders

Concrete contractors for home builders

Need a foundation subcontractor in Toronto and the GTA? Send us your drawings and the dates you need. Footings, walls, slabs and framing priced as one package, on one crew schedule, with WSIB clearance and insurance certificates on request.

Footing trench beside house, concrete footings in Barrie by Grand Structural Services

Guides for homeowners and builders

Plain answers on costs, footings, foundations, underpinning and framing in Toronto and the GTA.

FAQ

Questions homeowners ask

Can’t find your answer? Call us at (416) 785-7838 or send your drawings for a free quote.

A residential concrete contractor builds the structural concrete of a house: footings, foundation walls, garage and basement slabs, and underpinning. GSS does all of that across Toronto and the GTA, and frames the house too.

Toronto and the GTA: North York, Etobicoke, Scarborough, Mississauga, Brampton, Vaughan, Markham, Richmond Hill, Oakville, Burlington, Hamilton, Pickering, Ajax, Whitby, Oshawa, Newmarket, Aurora, Barrie and Orillia.

Yes. The City requires a building permit to underpin or lower a basement, and to add a below-grade entrance. We don’t dig until it is issued.

Often, yes. The City requires a professional engineer to design and review the work when the new footing goes below your neighbour’s footing, when the unsupported height is over 1.2 metres, or when the soil is clay or silt. In every case the City wants engineer reports at the start and end of the work.

Yes. We pour the footings, walls and slab, then frame the house or addition. One company, one schedule.

A structural concrete slab that spans over a room below, usually a cold cellar or basement space under the garage. It is formed, shored and reinforced to the engineer’s design, unlike a slab on grade that sits on compacted ground.

Yes. We fabricate custom rebar to the engineer’s drawings and supply the concrete, then install both with our own crews. Buying in bulk keeps material prices down, and you deal with one source for the whole foundation.

As part of a larger project, yes: a new home, an addition or a full underpinning job, on the same engineer’s design and permit. We don’t take on stand-alone walkouts.

Yes. We frame laneway houses, garden suites and second storey additions, and we can pour their footings and foundation walls too.

Our work is new construction and underpinning, not repairs. If your foundation needs to be lowered or rebuilt, that is where we come in.

Usually within 1 to 2 weeks of a signed quote. Call us and we’ll give you a real date.

Ready to pour? Get your foundation priced.

Send your drawings today. We reply the same day, and you get a priced breakdown and a pour date within 48 hours.