Quick-start site due-diligence checklist
Checklist added October 28, 2026. Use it with the detailed guide below.
Property and access: confirm boundaries, survey information, easements, legal access and delivery constraints with the appropriate advisers.
Use and approvals: check current zoning, proposed occupancy, planning requirements and any site-specific restrictions before relying on a layout.
Ground and environment: identify investigation needs for soil, groundwater, contamination, drainage, flood risk and conservation constraints. A visual walk-through cannot resolve these.
Services and existing building: confirm capacity and condition, not merely the presence of water, electrical or mechanical infrastructure.
Cost and schedule: state assumptions, exclusions, unresolved items, contingencies, long-lead purchases and decision dates.
Responsibility: assign an owner and due date to each outstanding investigation or approval.
What a useful deliverable looks like
For an unresolved electrical-capacity question, the record might identify the consultant and utility contact, information still required, expected decision date, provisional cost allowance and the design or procurement activities that depend on it. This is a sample format, not an FCC project result.
The Brampton school-conversion example later in this guide shows why an existing building’s systems and intended use need to be considered together. For related decisions, see the consolidated construction timeline guide and 12 contractor-selection questions. Use Ontario’s Building Code resources for current provincial resources.By Deep Toor | Director, FCC Builders Canada
Updated October 2026
The success of a commercial construction project is often determined long before construction begins.
Whether you're developing a commercial plaza, converting an office building into a school, constructing a hotel, or renovating an existing commercial property, the decisions made during the planning stage can have a significant impact on cost, scheduling, and the finished building.
One of the most common misconceptions I encounter in construction is that a project is ready to proceed once the architectural drawings have been prepared.
In practice, drawings are only part of the equation.
Site conditions, municipal approvals, project financing, mechanical and electrical requirements, material availability, and construction sequencing must all be considered before a reliable construction budget and schedule can be established.
At FCC Builders Canada, our work across Ontario has reinforced the importance of understanding these requirements early rather than addressing them after construction is underway.
This guide explains what pre-construction services involve, how developers can assess project feasibility, when to involve consultants and contractors, and which decisions deserve attention before breaking ground.
1. What Are Pre-Construction Services?
Pre-construction is the planning, assessment, and coordination process that takes place before physical construction begins.
Its purpose is to determine whether a proposed development is feasible, establish how the project should be delivered, and identify potential risks before significant construction expenditures are committed.
For commercial and institutional projects in Ontario, pre-construction services commonly include:
Property evaluation and site feasibility
Zoning and municipal planning reviews
Preliminary construction budgeting
Architectural and engineering coordination
Constructability assessments
Value engineering
Construction scheduling and phasing
Procurement and material lead-time reviews
Permit coordination
Risk assessment and contingency planning
Scope development and contractor procurement
The specific services required depend on the project.
A new commercial plaza on vacant land has different planning requirements from a renovation inside an occupied hotel. Similarly, converting an existing office building into a private school involves considerations that would not necessarily apply to a conventional office renovation.
The objective of pre-construction is not to eliminate every possible construction risk. It is to identify the risks that can reasonably be anticipated and develop a practical strategy for managing them.
2. Start With Property Feasibility Before Committing to a Development
One of the most consequential decisions a property owner makes is selecting the land or building.
A property may appear attractive because of its location, size, or purchase price, but those factors alone do not establish whether it is suitable for the proposed use.
Before acquiring a commercial property or committing to a major renovation, consider the following.
Zoning and permitted use
Confirm whether the municipality's zoning bylaw permits the intended activity.
A building currently used for offices may not automatically be suitable for a private school, medical clinic, restaurant, or place of worship.
Depending on the proposed development, additional planning approvals, a zoning amendment, or a minor variance may be necessary.
Servicing and infrastructure
Evaluate existing and proposed infrastructure, including:
Water and sanitary servicing
Stormwater management
Electrical capacity
Natural gas availability
Telecommunications infrastructure
Fire protection water supply
Vehicular access, loading, and parking
Utility infrastructure can have a significant impact on a project's viability, particularly where a building is being converted to a more demanding use.
Environmental and geotechnical conditions
A site assessment may identify constraints that are not visible during a property inspection.
Examples include unsuitable soil, groundwater conditions, contaminated material, buried structures, or inadequate bearing capacity.
Depending on the project, the owner may require a survey, geotechnical investigation, environmental assessment, or additional specialized studies.
For prospective purchasers, these investigations should be considered before waiving relevant due-diligence conditions.
Existing building conditions
When renovating or converting an existing building, examine the capacity and condition of the structure, roof, mechanical equipment, electrical distribution, fire protection, and building envelope.
The most expensive part of a conversion is not always the new interior construction. It may be the work required to adapt the building's existing systems to its proposed use.
Our recommendation: Establish a preliminary construction feasibility assessment before finalizing the purchase or committing to a detailed design.
3. Pre-Construction Budgeting: Understanding the True Cost of a Project
A preliminary construction estimate is one of the first financial tools a developer needs.
However, there is an important difference between a conceptual estimate and a construction price prepared from completed drawings and specifications.
During the earliest stages, pricing is generally based on limited information, comparable projects, assumptions, and preliminary quantities.
As drawings develop, quantities and trade quotations can be used to refine the estimate.
The stages of construction budgeting
StageInformation availablePurposeConceptual estimateApproximate building area, use, location, broad scopeDetermine initial financial feasibilitySchematic design estimatePreliminary layouts, building systems, site informationCompare design and investment optionsDesign development estimateMore detailed drawings, specifications and system selectionsIdentify budget gaps and refine allowancesPre-tender or trade-priced estimateCoordinated drawings and defined trade scopesEstablish a more reliable construction priceFinal contract budgetAgreed scope, pricing, allowances, exclusions and conditionsSet the financial baseline for construction
Each estimate should document its assumptions, exclusions, contingency allowances, and pricing date.
A budget prepared before the structural system, mechanical requirements, or servicing scope is known should not be treated as a guaranteed construction price.
What should a commercial development budget include?
A complete development budget may include more than the construction contract itself.
Hard construction costs
These include the physical work required to construct or renovate the building, including foundations, structure, envelope, mechanical and electrical systems, interior construction, and defined site improvements.
Soft costs
These may include architecture, engineering, permits, surveys, legal services, project administration, insurance, financing, and other development expenses.
Site and municipal costs
These can include utility connections, servicing upgrades, development charges, site works, and other location-specific requirements.
Contingency and escalation
Allowance should be made for identified project risks, incomplete design information, and possible pricing changes between the estimate date and procurement.
For a detailed explanation of construction budgets and overlooked expenses, read our Commercial Construction Cost Breakdown Guide.
4. Why Early Contractor Involvement Matters
Traditionally, some development projects follow a sequence where the owner hires an architect, completes the design, and then invites contractors to submit construction bids.
This approach can work well when the drawings and scope are sufficiently developed.
However, involving a qualified general contractor earlier can provide valuable practical input while design decisions can still be adjusted.
Constructability reviews
A constructability review considers how the proposed building will actually be constructed.
For example, a structural design may meet the engineer's performance requirements but introduce unnecessary installation complexity or require specialized equipment that is difficult to accommodate on the site.
Early coordination between designers, engineers, and contractors allows these matters to be reviewed before construction.
Material availability and procurement
Certain construction materials and equipment require substantial manufacturing or delivery time.
Commercial electrical equipment, elevators, specialized mechanical systems, custom glazing, and structural components may become critical-path items.
Identifying these requirements during design allows the project team to evaluate lead times, specifications, and procurement strategies.
Construction sequencing
A building's construction sequence can affect both its schedule and cost.
This is particularly relevant when a property remains operational during renovations or when different parts of a development must be completed in phases.
For example, renovation work inside an occupied hotel requires more than coordinating subcontractors. It may involve guest access, noise restrictions, temporary service interruptions, and the separation of construction areas from occupied spaces.
Value engineering
Value engineering should focus on achieving required performance and functionality at a more efficient cost.
This may involve comparing alternate materials, optimizing building layouts, reviewing mechanical system options, or simplifying construction details.
The objective is not to reduce quality. It is to identify unnecessary cost while maintaining the project's design intent, safety, and long-term performance.
5. Why Architects, Engineers, Design Consultants and Contractors Should Work Together
A commercial construction project typically involves several professional disciplines.
An architect may coordinate the overall design and applicable code considerations. Structural, mechanical, electrical, civil, and other engineers are responsible for their respective professional design scopes.
A design consultant or interior designer may contribute expertise in functionality, circulation, finishes, branding, and the end-user experience.
The general contractor contributes practical information concerning construction methods, materials, installation requirements, sequencing, costs, and trade coordination.
These responsibilities complement one another.
For example, when planning a restaurant, the architectural layout must be coordinated with commercial kitchen equipment, ventilation requirements, plumbing, electrical demand, fire protection, and customer circulation.
An attractive layout that has not been coordinated with the required building systems may result in expensive redesigns or construction changes.
Similarly, a medical office conversion may require early coordination of plumbing locations, accessibility, ventilation, electrical capacity, and specialized equipment.
My preferred approach is to establish clear responsibilities, identify major technical constraints early, and ensure that decisions involving multiple disciplines are reviewed collectively rather than in isolation.
The exact responsibilities of each professional should be defined in their agreements. Necessary architectural and engineering work must be performed by appropriately qualified professionals.
6. Real FCC Project Example: Converting a Commercial Office Building into a Private School in Brampton
A useful illustration of the value of early project coordination is FCC Builders Canada's commercial office-to-school conversion in Brampton, Ontario.
Project overview
FCC Builders Canada was engaged to convert an existing three-storey commercial office building into a private educational facility.
The project involved a complete interior demolition and reconstruction to accommodate a new academic environment.
The scope included:
More than 20 classrooms
Specialized science laboratories
Staff and administrative offices
Student amenities and common areas
Mechanical and electrical system upgrades
Fire alarm and sprinkler systems
Accessibility improvements
Data and classroom technology infrastructure
Unlike a conventional office renovation, the conversion required the existing building to accommodate an entirely different set of operational and life-safety needs.
Challenge 1: Changing the building's intended use
An office building is not automatically suitable for use as a school.
Classroom layouts, occupant loads, means of egress, fire protection, ventilation, accessibility, and other code requirements must be evaluated based on the proposed use.
For this project, FCC coordinated with the project consultants and municipal authorities to address the requirements for the conversion.
Pre-construction lesson: A change-of-use project should begin with a detailed code and building-systems review, not simply a proposed interior layout.
Challenge 2: Coordinating specialized building systems
The school included spaces with significantly different requirements from ordinary commercial offices.
Science laboratories, for example, involved specialized gas services, ventilation, sinks, and other technical infrastructure.
These systems need to be coordinated with architectural layouts, mechanical and electrical designs, and construction requirements.
Pre-construction lesson: Specialized spaces should be identified during the earliest design stages, with equipment and servicing requirements defined before major construction decisions are finalized.
Challenge 3: Managing a fixed operational deadline
Educational facilities frequently work toward a defined opening date.
In this case, the project required a condensed construction schedule to support the upcoming academic year.
FCC's project approach included phased construction, critical-path coordination, and communication with trades and inspectors.
Pre-construction lesson: When a project has a fixed operational deadline, procurement, approvals, inspections, and commissioning should be considered alongside the physical construction schedule.
Why this project matters
The Brampton school conversion demonstrates an important distinction: the success of an adaptive-reuse project depends not simply on how much construction is required, but on how well the proposed use is coordinated with the existing building.
That principle applies to numerous other development types, including medical clinics, hotels, restaurants, gyms, and institutional facilities.
View FCC's Brampton Private School Conversion Project
Project information is based on FCC Builders Canada's published project portfolio. Confidential project budgets and consultant documentation are not included.
7. Understanding Permits and Municipal Approvals in Ontario
Municipal approvals can have a major influence on the overall project schedule.
Before construction begins, the owner and professional team should determine which approvals apply to the proposed work.
Depending on the location and scope, these may include zoning reviews, site plan control, variances, building permits, demolition permits, conservation authority permissions, and other applicable approvals.
Ontario's 2024 Building Code came into force on January 1, 2025, with subsequent amendments. Projects being developed in 2026 should be reviewed against the applicable current requirements and any relevant transition provisions.
Owners should also avoid assuming that approval times are identical across municipalities.
Requirements in Brampton, Vaughan, Toronto, Mississauga, or Northern Ontario communities can differ because of local planning policies, servicing conditions, and the complexity of a particular application.
A practical permitting strategy
Before proceeding with final design, I recommend that property owners identify:
The applicable zoning and planning approvals
Required professional drawings and supporting reports
Municipal and agency submission requirements
Responsibilities for preparing and coordinating applications
Approvals or inspections that could affect the critical path
Any unresolved conditions that could prevent construction or occupancy
FCC Builders Canada works with project consultants and owners to coordinate construction-related requirements and support the transition from design into construction.
For applicable legal requirements, consult Ontario's Building Code regulation and the relevant municipality.
8. Construction Scheduling: Planning Beyond the Start Date
Construction schedules are often presented as a start date and an anticipated completion date.
For developers and commercial operators, this is rarely sufficient.
A realistic project schedule should identify major stages and the relationships between them.
These typically include:
Project stageImportant planning considerationsFeasibilitySite review, ownership decisions and development viabilityDesign developmentArchitectural and engineering coordinationApprovalsZoning, planning, permits and agency requirementsProcurementTrade pricing, material lead times and equipment ordersConstructionSite work, foundations, structure, building systems and finishesCompletionTesting, commissioning, inspections, deficiencies and occupancy
Some activities may run concurrently, while others must be completed before subsequent work can begin.
For example, a contractor may be able to prepare certain procurement packages while other design matters are being finalized, subject to contractual commitments and the risk of subsequent revisions.
However, this does not mean physical construction can proceed without the necessary approvals.
What often causes construction schedules to change?
Common factors include:
Incomplete or revised drawings
Delayed owner decisions
Municipal or utility coordination
Unforeseen existing conditions
Specialized equipment lead times
Limited trade availability
Weather-sensitive operations
Late scope additions
An experienced construction team can help identify these risks and develop an appropriate sequencing strategy.
Nevertheless, no contractor can guarantee the elimination of every delay.
9. Construction Project Management Begins Before Construction
Project management should not begin when subcontractors arrive on site.
During pre-construction, the project team should establish a decision-making structure, responsibilities, communication procedures, and methods for monitoring changes to cost and schedule.
A project benefits from clearly defined processes for:
Drawing and document coordination: Maintaining current drawings, specifications, revisions, and approvals.
Requests for information: Resolving design questions before they interrupt construction.
Procurement: Identifying long-lead materials and confirming purchasing responsibilities.
Cost management: Tracking estimates, allowances, potential changes, and forecast costs.
Schedule management: Identifying critical activities and reviewing the effect of changes.
Owner decisions: Establishing who can approve changes and when decisions are required.
Quality and inspections: Planning required inspections, testing, and documentation.
At FCC Builders Canada, construction management and pre-construction planning are connected services because early decisions influence almost every subsequent stage of project delivery.
10. Seven Common Mistakes Developers Should Avoid
Over the course of planning and delivering commercial projects, several recurring challenges deserve particular attention.
Mistake 1: Purchasing a property without confirming feasibility
A location may be commercially attractive but unsuitable for the proposed development because of zoning, servicing, environmental constraints, or building limitations.
Better approach: Complete appropriate due diligence and obtain preliminary professional advice before committing.
Mistake 2: Treating a preliminary estimate as a final price
Early-stage budgets often contain assumptions that may change as design information becomes available.
Better approach: Require documented estimate assumptions, exclusions, allowances, and updates as the project develops.
Mistake 3: Selecting the lowest contractor price without reviewing scope
Two quotations can have very different exclusions, allowances, and construction responsibilities.
Better approach: Compare bids using a consistent scope of work and evaluate qualifications, schedule, project-specific experience, and contractual terms.
Mistake 4: Waiting too long to involve construction professionals
Construction methods, labour availability, and material lead times can influence design decisions.
Better approach: Obtain early contractor input where practical, particularly for complex or time-sensitive projects.
Mistake 5: Making major design changes after construction begins
Late modifications can affect previously completed work and require coordination across multiple trades.
Better approach: Establish and approve critical layouts, building systems, and specialized requirements before construction.
Mistake 6: Underestimating approvals and procurement
The planned opening date may depend on activities outside the contractor's direct control.
Better approach: Identify these activities in the master schedule and establish realistic milestones.
Mistake 7: Failing to establish clear project responsibilities
Unclear communication and decision-making authority can create delays and disputes.
Better approach: Define responsibilities among the owner, consultants, contractor, suppliers, and other stakeholders before work begins.
11. What Should You Receive at the End of Pre-Construction?
The deliverables depend on the services retained and the stage of project development.
For a substantial commercial project, a useful pre-construction package may include:
DeliverableWhat it should establishFeasibility summaryWhether the project appears viable, subject to identified assumptionsSite constraints reviewKnown zoning, servicing, environmental or building limitationsPreliminary scopeWhat is proposed and what is excludedCost estimateBudget, assumptions, allowances and contingencyProject scheduleKey milestones, dependencies and lead-time risksConstructability reviewPotential construction challenges and design considerationsProcurement strategyMajor trade packages, long-lead items and purchasing approachRisk registerKey risks, likelihood, impact and proposed mitigationApprovals matrixRequired approvals, responsible parties and current statusDecision logOutstanding owner and consultant decisions
Not every project needs every deliverable in this format, but the information should be organized and accessible to the project team.
A well-prepared pre-construction package gives the owner a clearer basis for deciding whether to proceed, revise the scope, or reconsider the development.
12. Pre-Construction Checklist for Ontario Property Owners
Before authorizing major construction expenditures, consider the following:
Has the intended property use been reviewed for zoning compatibility?
Have critical existing conditions and site constraints been investigated?
Are the appropriate architects, engineers, and consultants engaged?
Is the project scope sufficiently defined?
Does the budget include hard costs, soft costs, and relevant site expenses?
Are the estimates supported by current information and clear assumptions?
Have key approvals and building-code requirements been identified?
Have long-lead equipment and material requirements been reviewed?
Is the construction schedule realistic?
Have major project risks and contingency allowances been documented?
Are decision-making and communication responsibilities clear?
Have the project delivery model and contract requirements been reviewed?
The more of these questions that remain unresolved, the greater the uncertainty surrounding the project's cost and schedule.
Frequently Asked Questions About Pre-Construction in Ontario
When should I hire a general contractor?
A contractor can be engaged during early feasibility or design development, before the construction drawings are finalized.
Early involvement may help evaluate construction costs, alternative materials, scheduling, and practical building requirements.
The appropriate timing will depend on the procurement model and the owner's needs.
How much do pre-construction services cost?
There is no universal fee.
Costs depend on project size, complexity, required investigations, design coordination, and the services included in the agreement.
Some arrangements use fixed fees or defined service stages, while others may incorporate pre-construction services into a broader delivery agreement.
Owners should request a clearly defined scope and fee proposal.
How long does pre-construction take?
The duration varies considerably.
A straightforward tenant improvement may require relatively limited coordination, while a ground-up commercial development can involve extended design, municipal planning, and servicing processes.
The timeframe should be established based on the actual project rather than relying on a standard estimate.
Can pre-construction reduce change orders?
Thorough planning can help identify design conflicts, missing information, and foreseeable construction challenges before work starts.
However, change orders may still arise from owner requests, unforeseen conditions, or other legitimate circumstances.
Is pre-construction necessary for renovations?
Yes, particularly when an existing building is being substantially modified or converted to a different use.
Existing conditions, code requirements, equipment capacity, and operational constraints may introduce issues that do not typically arise on a vacant construction site.
Can FCC Builders Canada assist before I purchase a property?
FCC offers advisory and pre-construction services that include early feasibility and budgeting support.
The appropriate level of involvement depends on the property's condition, the intended development, and whether additional independent technical investigations are necessary.
Final Thoughts: Invest in Planning Before Construction
Successful construction requires more than quality workmanship.
It requires a realistic understanding of the proposed building, site conditions, financial limitations, regulatory requirements, and the decisions that must be made before construction begins.
For developers and business owners, pre-construction is an opportunity to reduce uncertainty while changes can still be made efficiently.
Whether you are considering a new commercial development, private school conversion, hospitality project, or major building renovation, early collaboration between owners, consultants, and construction professionals can lead to better-informed decisions.
At FCC Builders Canada, we support commercial and institutional projects across Ontario through general contracting, construction management, design-build coordination, and pre-construction advisory services.
Planning a commercial construction project in Ontario?
Explore our Advisory & Pre-Construction Services or contact FCC Builders Canada to discuss your proposed project, preliminary budget, and construction requirements.
About the Author
Deep Toor
Director | FCC Builders Canada
Deep Toor is the Director of FCC Builders Canada, an Ontario-based general contracting firm specializing in commercial, institutional, hospitality, and multi-residential construction.
His experience includes construction operations, project budgeting, procurement coordination, subcontractor management, and project delivery across Ontario.
Through FCC Builders Canada's work on commercial developments, educational facilities, hotel construction, and building renovations, he brings a practical perspective to pre-construction planning and the decisions that influence cost, risk, and project execution.
References and Further Reading
Disclaimer: This article provides general construction-planning information. Site conditions, municipal requirements, contractual responsibilities, and project costs vary. Consult the appropriate licensed design professionals, municipal authorities, and legal advisers for project-specific guidance.
