GROUND Cost Index · GTA · trailing 24 months

What construction actually gets declared at.

Value distributions per project category, computed from GROUND's own permit corpus — medians and quartiles, never averages, so one outlier can't move a benchmark.

13,681classified projects in the window
15benchmark categories
A + B + C + Ddata tiers live — awarded contracts, bid tabulations, declared permit values & modeled $/SF
CategoryProjects P25MedianP75 Declared $/SF · medianIQRw/ area
Residential addition & renovation 5,305 $20K $50K $150K $137 $65–$254 2,532
Office fit-out 1,135 $85K $200K $800K $120 $58–$241 897
Single detached & new houses 1,102 $500K $900K $1,200K $192 $121–$268 1,057
Underpinning & basement lowering 1,094 $50K $100K $300K $155 $81–$283 667
Laneway & garden suites 1,029 $100K $250K $479K $227 $128–$374 963
Restaurant fit-out 857 $30K $80K $230K $100 $55–$192 656
Multiplex (new) 816 $80K $450K $1,000K $155 $75–$248 679
Secondary suites 640 $25K $47K $80K $63 $40–$117 402
Retail fit-out 617 $50K $100K $400K $94 $53–$201 469
Institutional alteration 454 $80K $350K $1,200K $333 $131–$733 201
Industrial & warehouse alteration 273 $50K $190K $1,000K $136 $52–$311 137
Medical & dental fit-out 250 $80K $150K $450K $111 $58–$226 215
Commercial interior (other) 45 $50K $200K $500K $116 $52–$157 30
New industrial building 37 $500K $3,020K $23,366K $162 $119–$216 31
Demolition 27 $30K $50K $600K $40 $27–$96 18
By project size

Size changes the number

A 2,500 SF fit-out and a 50,000 SF fit-out don't share a benchmark. Where a category has enough sized comparables, GROUND splits its declared $/SF distribution by floor-area band.

CategorySize bandProjects Declared $/SF · P25MedianP75
Residential addition & renovation < 5K SF 2,445 $64 $136 $254
5–10K SF 65 $86 $145 $235
10–25K SF 13 $70 $158 $255
Single detached & new houses < 5K SF 635 $121 $204 $286
5–10K SF 376 $128 $170 $232
10–25K SF 44 $91 $184 $289
Laneway & garden suites < 5K SF 941 $130 $230 $378
5–10K SF 22 $84 $171 $198
Office fit-out < 5K SF 597 $54 $111 $235
5–10K SF 125 $69 $113 $201
10–25K SF 106 $77 $154 $252
25–50K SF 38 $46 $177 $277
50–100K SF 20 $184 $262 $326
100K+ SF 11 $53 $174 $324
Multiplex (new) < 5K SF 504 $67 $145 $256
5–10K SF 172 $99 $166 $238
Underpinning & basement lowering < 5K SF 645 $82 $158 $287
5–10K SF 21 $79 $98 $223
Restaurant fit-out < 5K SF 598 $54 $96 $179
5–10K SF 32 $76 $148 $238
10–25K SF 19 $91 $157 $443
Retail fit-out < 5K SF 384 $51 $94 $202
5–10K SF 45 $71 $100 $179
10–25K SF 27 $60 $81 $117
25–50K SF 10 $37 $110 $245
Secondary suites < 5K SF 384 $40 $60 $114
5–10K SF 16 $92 $132 $158
Medical & dental fit-out < 5K SF 183 $58 $103 $223
5–10K SF 19 $37 $95 $232
10–25K SF 11 $66 $189 $414
Institutional alteration < 5K SF 140 $126 $309 $767
5–10K SF 23 $124 $267 $392
10–25K SF 13 $101 $323 $550
25–50K SF 9 $235 $505 $685
50–100K SF 8 $458 $622 $1,056
100K+ SF 8 $341 $427 $733
Industrial & warehouse alteration < 5K SF 75 $59 $166 $386
5–10K SF 24 $34 $70 $140
10–25K SF 23 $81 $136 $205
25–50K SF 9 $107 $171 $534
New industrial building < 5K SF 12 $146 $185 $216
100K+ SF 9 $95 $119 $138
Tier A · awarded contracts · trailing 6 years

What the work actually sold for

Prices a public body agreed to pay, not an applicant's estimate — City of Toronto awarded contracts, $3.0B across 327 construction awards. Civil work is priced as contract value because $/SF is the wrong shape for a watermain.

Work classAwards P25Median award P75Largest
Watermain & sewer 105 $2,951K $6.24M $11.2M $494.8M
Roads & resurfacing 90 $1,321K $2.05M $4.8M $51.8M
Buildings & facilities 46 $945K $1.72M $6.1M $96.2M
Bridges & structures 43 $737K $2.52M $6.0M $75.3M
Parks & recreation 30 $974K $1.35M $4.9M $125.8M
Water & wastewater plants 13 $1,556K $3.26M $13.4M $79.8M

Work class is inferred from the solicitation text — an interpretation, not a source field.

Where the money goes · last 6 years

Public construction spend, by awarding division

1,381 awards worth $6.8B. The division that awarded the contract is recorded on the award itself — unlike work class, which has to be read out of the solicitation text and is missing on most rows. Bar width is share of awarded value.

DivisionAwards Awarded valueMedian award Largest
Engineering & Construction Services
42.7% of awarded value
243 $2,897.6M $4,660,915 $494.8M
Toronto Water
13.3% of awarded value
164 $905.7M $3,158,775 $79.8M
Parks, Forestry & Recreation
10.4% of awarded value
201 $704.3M $858,252 $90.6M
Corporate Real Estate Management
8.5% of awarded value
93 $574.3M $3,100,000 $96.2M
Solid Waste Management Services
7.3% of awarded value
58 $495.3M $1,317,170 $197.1M
Transportation Services
5.3% of awarded value
193 $358.2M $1,197,000 $18.9M
Fleet Services
1.6% of awarded value
77 $111.3M $350,384 $19.9M
Fire Services
1.4% of awarded value
31 $93.4M $459,510 $33.6M
Technology Services
1.3% of awarded value
27 $87.5M $730,882 $20.0M
Seniors Services and Long-Term Care
0.9% of awarded value
32 $58.1M $530,414 $18.1M

Top 10 of 44 divisions, carrying 93% of awarded value. Sub-division suffixes are folded into the parent division. 19 awards worth $174.3M were awarded jointly by more than one division and are counted in the total but credited to none of them.

Who wins the work · last 3 years

Municipal construction, by awarded value

ContractorAwardsAwarded value
GIO-CRETE CONSTRUCTION LTD 3 $515.4M
POMERLEAU INC. 2 $222.0M
BENNETT MECHANICAL INSTALLATIONS 3 $131.9M
GIP PAVING INC 2 $106.9M
DAMEN SHIPBUILDING 5 B.V. 1 $90.6M
2489960 ONTARIO INC 11 $71.6M
DRAINSTAR CONTRACTING LTD 2 $69.8M
D CRUPI & SONS LIMITED 12 $67.9M
Tier B · bid tabulations · trailing 24 months

What the market bid — every price, not just the winner

13,484 submitted bids across 1,917 public tenders from 84 Ontario municipal buyers, as read at bid opening. The median low bid ran 8.2% under the runner-up — the observed gap between two estimators pricing identical documents.

Work classTendersBids Low bid · P25MedianP75 Bidders / tenderLow vs 2nd
Roads & resurfacing 469 3020 $268K $886K $3,022K 5 −6.9%
Watermain & sewer 407 2700 $333K $916K $3,170K 6 −9.9%
Buildings & facilities 399 3228 $138K $314K $1,033K 7 −8.0%
Parks & recreation 283 2340 $127K $380K $1,162K 7 −8.1%
Bridges & structures 195 1331 $294K $829K $2,290K 6 −8.4%
Water & wastewater plants 130 577 $252K $1,339K $5,663K 4 −8.25%
Demolition & remediation 34 288 $58K $140K $486K 7 −18.4%

Unofficial totals as published by each portal at bid opening — before award, contract execution or any post-tender negotiation. Work class is inferred from the tender title. Both are interpretations, not source fields.

Provenance

Every number carries its evidence tier

A+ Actual subcontract award / bid tab planned
A Prime contract award live
B Engineer estimate / tender result live
C Declared permit value live
D Modeled from comparable projects live

Each live tier answers a different question: an award (A) is what one buyer paid for one job; a bid tab (B) is every price the market offered for it; a declared value (C) is what thousands of applicants told the city their work was worth; a model (D) prices a project from its comparables. Tier A+ (subcontract awards) is next — that is what splits a contract into trade packages.

Where this is going

Each asset class gets the unit that makes engineering sense

$/SF is only the right shape for buildings. GROUND's cost ontology assigns every asset class its native units — populated as trade-level award data accumulates, so a project eventually decomposes into system-level price ranges.

Buildings — new & fit-out

Total: $/SF

Excavation & shoring $/m³ · Concrete $/m³ · Reinforcing steel $/t · Structural steel $/t · Envelope & roofing $/m² · Interiors $/SF · Mechanical $/SF · Electrical $/SF

Civil — linear

Total: $/m

Watermain & sewer $/m · Roads & paving $/m² · Earthworks $/m³

Water / wastewater plants

Total: $ per m³/day capacity

Structural concrete $/m³ · Formwork $/m² · Reinforcing steel $/t · Process piping $/m · Pumps & process equipment $/each · Electrical / I&C % of plant

Methodology

What these numbers are — and aren't

Every figure is a declared construction value from a Toronto building permit (tier C), classified by GROUND's cost taxonomy over the trailing 24 months, minimum 8 comparables per category. $/SF uses the permit's declared gross floor area (all use classes summed), with implausible rates outside $20–$3,000/SF discarded. Declared values can understate actual hard cost — that is what the tier system is for. Coming next, in order of evidence quality: awarded public contract values (tiers A/A+) from municipal and CanadaBuys award records; index normalization to current-quarter pricing (StatCan BCPI); and unit rates ($/m, $/m³) for civil work, where $/SF is the wrong shape entirely. External industry guides are used as calibration references only — never republished as GROUND data.