Quote-Ready Now Engineer & City Coordinated Licensed & Insured
Specifier Guides

Harrowgate Group Blog

Practical guides on commercial and heavy-civil construction, from concrete, foundations, and site servicing to excavation, paving, restoration, and demolition, how to plan, spec, and deliver the work to code across the GTA and Ontario.

Harrowgate Group heavy-civil road construction project in Ontario
Guide

9 Questions to Ask Before Hiring a Commercial Concrete Contractor

Nine practical questions Ontario owners and general contractors should ask about scope, safety, schedule, quality, crews, changes, and closeout.

Read guide →
Guide

Cast-in-Place vs Precast Concrete: Cost, Speed, and Fit

A practical Ontario comparison of cast-in-place and precast concrete for cost, schedule, design flexibility, access, quality control, and project fit.

Read guide →
Guide

Commercial Concrete Cost per Square Foot in Ontario (2026)

Planning ranges for commercial concrete in Ontario in 2026, including slabs, foundations, structural work, cost drivers, and quote comparisons.

Read guide →
Guide

Commercial Foundation Repair Signs and the Cost of Waiting

Recognize commercial foundation warning signs, understand urgent conditions, and plan investigation and repair before movement disrupts operations.

Read guide →
Guide

How Long Does a Commercial Site-Servicing Project Take?

A realistic Ontario commercial site-servicing timeline covering design, approvals, locates, excavation, utilities, testing, restoration, and closeout.

Read guide →
Guide

OPSS Explained for Property Owners and Developers

Understand Ontario Provincial Standard Specifications and Drawings, how contracts use them, and what owners must review before civil work begins.

Read guide →
Guide

Shoring vs Underpinning: Which Does Your Project Need?

Understand the difference between shoring and underpinning, when Ontario commercial projects need each, and why some excavations require both systems.

Read guide →
Guide

What Does a Commercial Demolition Permit Require in Ontario?

A practical guide to commercial demolition permit requirements in Ontario, including drawings, hazardous materials, utilities, engineering, approvals, and site controls.

Read guide →
Guide

What Does a Heavy-Civil Contractor Do and When Do You Need One?

Learn what heavy-civil contractors deliver, how they differ from general contractors, and when Ontario owners need civil, excavation, utility, concrete, and infrastructure expertise.

Read guide →
Guide

Winter Concrete Pouring in Ontario: What It Takes and Costs

How winter concrete placement works in Ontario, what protection and curing require, and how cold weather affects commercial concrete budgets and schedules.

Read guide →

Companies We've Worked With

Trusted by Leading Organizations

Harrowgate Group delivers commercial and heavy-civil construction for developers, contractors, institutions, municipalities, and property groups across Ontario.

Popeyes logo Popeyes
Tim Hortons logo Tim Hortons
Subway logo Subway
University of Toronto logo University of Toronto
Madison Group logo Madison Group
RioCan logo RioCan
Women's College Hospital logo Women's College Hospital
Starbucks logo Starbucks
Mazda logo Mazda
TD Bank logo TD Bank
City of Toronto logo City of Toronto
Popeyes logo Popeyes
Tim Hortons logo Tim Hortons
Subway logo Subway
University of Toronto logo University of Toronto
Madison Group logo Madison Group
RioCan logo RioCan
Women's College Hospital logo Women's College Hospital
Starbucks logo Starbucks
Mazda logo Mazda
TD Bank logo TD Bank
City of Toronto logo City of Toronto
Call now (416) 629-0721 Get a Quote