Building things is big business—just look at the construction industry’s representatives on the 2017 PROFIT 500 ranking of Canada’s Fastest-Growing Companies.

The 22 construction firms on this year’s ranking grew their revenues an average of 1,990% between 2011 and 2016. Collectively they employed 1,522 full time-equivalent employees in 2016.

Here is the complete list of Canada’s Fastest Growing Construction Companies for 2017.

1. Gillam Group
PROFIT 500: No. 1
Growth (2011–2016): 29,256%
Revenue (2016): $50–100 million
Headquarters: Toronto, Ont.
What it does: Builds institutional, commercial, industrial and residential structures in Ontario

2. Bronte Construction
PROFIT 500: No. 10
Growth (2011–2016): 5,752%
Revenue (2016): $10–20 million
Headquarters: Oakville, Ont.
What it does: Provides civil and environmental construction services

3. J-CON Civil
PROFIT 500: No. 54
Growth (2011–2016): 1,346%
Revenue (2016): $2–5 million
Headquarters: Stony Mountain, Man.
What it does: Delivers civil construction services, particularly for sewer and water projects

4. QuickContractors.com
PROFIT 500: No. 77
Growth (2011–2016): 951%
Revenue (2016): $10–20 million
Headquarters: Guelph, Ont.
What it does: Connects businesses with contractors, assemblers and installers of furniture, appliances and other fixtures

5. R3 Deconstruction & Abatement
PROFIT 500: No. 88
Growth (2011–2016): 813%
Revenue (2016): $10–20 million
Headquarters: Edmonton, Alta.
What it does: Salvages and reuses materials from demolition sites

6. Ryan Murphy Construction
PROFIT 500: No. 90
Growth (2011–2016): 801%
Revenue (2016): $2–5 million
Headquarters: Calgary, Alta.
What it does: Provides construction, renovation and project-management services

7. A+ Entrepreneurs Généraux
PROFIT 500: No. 122
Growth (2011–2016): 585%
Revenue (2016): $5–10 million
Headquarters: Montreal, Que.
What it does: Offers commercial construction and development services

8. Home Painters Toronto
PROFIT 500: No. 128
Growth (2011–2016): 565%
Revenue (2016): $2–5 million
Headquarters: Toronto, Ont.
What it does: Provides painting and handyman services for residential and commercial spaces

9. Earthline Foundations and Shoring
PROFIT 500: No. 129
Growth (2011–2016): 564%
Revenue (2016): $5–10 million
Headquarters: Mississauga, Ont.
What it does: Delivers foundation drilling and soil retention services for general contractors and developers

10. Distinct Infrastructure Group
PROFIT 500: No. 138
Growth (2011–2016): 505%
Revenue (2016): $50–100 million
Headquarters: Toronto, Ont.
What it does: Provides design, engineering, construction and maintenance services to telecom, utilities and government clients

11. Flat Iron Building Group
PROFIT 500: No. 147
Growth (2011–2016): 480%
Revenue (2016): $20–50 million
Headquarters: Toronto, Ont.
What it does: Offers construction management, general contracting and design-build services for interiors

12. Scott Steel
PROFIT 500: No. 200
Growth (2011–2016): 316%
Revenue (2016): $20–50 million
Headquarters: Burlington, Ont.
What it does: Offers construction services for industrial and commercial projects

13. Premium Fence Company
PROFIT 500: No. 209
Growth (2011–2016): 311%
Revenue (2016): $2–5 million
Headquarters: Surrey, B.C.
What it does: Installs cedar and other fences for residential clients in B.C.

14. Rockwood Custom Homes
PROFIT 500: No. 224
Growth (2011–2016): 279%
Revenue (2016): $20–50 million
Headquarters: Calgary, Alta.
What it does: Builds and renovates luxury homes

15. Gibraltar Holdings
PROFIT 500: No. 260
Growth (2011–2016): 232%
Revenue (2016): $5–10 million
Headquarters: Burnaby, B.C.
What it does: Designs and renovates commercial offices, including medical and dental facilities

16. D-Squared Construction
PROFIT 500: No. 285
Growth (2011–2016): 208%
Revenue (2016): $10–20 million
Headquarters: Ottawa, Ont.
What it does: Provides road and infrastructure construction services

17. Clôture Regionalé
PROFIT 500: No. 308
Growth (2011–2016): 191%
Revenue (2016): $2–5 million
Headquarters: Gatineau, Que.
What it does: Sells and installs residential and commercial fences

18. Kanvi Homes
PROFIT 500: No. 340
Growth (2011–2016): 164%
Revenue (2016): $20–50 million
Headquarters: Edmonton, Alta.
What it does: Builds high-end single-family homes

19. Fusion Homes
PROFIT 500: No. 371
Growth (2011–2016): 139%
Revenue (2016): $100–200 million
Headquarters: Guelph, Ont.
What it does: Builds and develops homes for families and individuals

20. Renovco
PROFIT 500: No. 388
Growth (2011–2016): 124%
Revenue (2016): $5–10 million
Headquarters: Dorval, Que.
What it does: Offers renovation and restoration services

21. Four Seasons Site Development
PROFIT 500: No. 417
Growth (2011–2016): 110%
Revenue (2016): $50–100 million
Headquarters: Brampton, Ont.
What it does: Provides civil construction work in the Greater Toronto Area

22. Benchmark Architectural Woodworking
PROFIT 500: No. 461
Growth (2011–2016): 89%
Revenue (2016): $2–5 million
Headquarters: Burnaby, B.C.
What it does: Manufactures and installs custom millwork for commercial, institutional and residential customers