Managing Multiple Contractors for a Backyard Project in Ontario

You want a new deck, fence, and patio — but hiring three separate contractors means juggling schedules, managing payments, and hoping nobody blames the other guy when something goes wrong.

Most Ontario homeowners hire specialists for each part: a deck builder for the structure, a fence contractor for privacy screening, and a landscaper for the patio. This approach gets you the best expertise for each trade, but it requires careful coordination to avoid delays, cost overruns, and finger-pointing when issues arise.

Why Multiple Contractors Make Sense (and When They Don't)

Specialists deliver better quality. A deck builder who installs 50 decks per year will build a stronger, safer structure than a general contractor who does one deck per month. Same goes for fence installers who understand post-setting techniques for Ontario's clay soil and freeze-thaw cycles.

You'll pay less overall. General contractors markup subcontractor labour by 15-30%. Hiring direct eliminates this middleman cost.

But coordination is your job now. You're the project manager. You schedule site access, resolve conflicts between trades, and ensure one contractor doesn't damage another's finished work.

When to use one contractor instead: If your project is small (deck under 200 sq ft plus basic fence), a single contractor can handle everything. You'll pay slightly more but avoid scheduling headaches. For larger projects — especially when adding retaining walls, grading work, or underground utilities — separate specialists are worth the coordination effort.

Timeline Planning: Who Goes First

1. Site work and grading (Week 1-2)

If you're adding drainage, excavating for a patio base, or grading the yard, this happens first. Landscape contractors or excavation specialists handle this phase.

• Coordinate with: All trades need to walk the site after grading
• Common mistake: Deck builder sets footings before final grade is established, leading to uneven transitions

2. Underground utilities (Week 2-3)

Electrical conduit for deck lighting, irrigation lines, or gas lines for an outdoor kitchen must go in before hardscaping.

• Coordinate with: Electrician needs to know deck framing layout; deck builder needs to avoid running joists over buried conduit
• Ontario requirement: Call Ontario One Call (811) before any digging

3. Deck footings and framing (Week 3-5)

Deck footings must cure for 7 days before framing begins. In KWC, expect a framing inspection before decking goes on.

• Coordinate with: Fence contractor needs to know deck footprint to avoid setting posts too close; patio installer needs finished deck height to establish patio grade
• Timing note: Book your deck permit 3-4 weeks before you want to break ground

4. Fence installation (Week 4-6)

Fence posts can go in while deck framing is underway, but hold off on fence boards until the deck is finished. Heavy materials and equipment can damage completed fence sections.

• Coordinate with: Deck builder needs clear access to work area; don't install fence sections where wheelbarrows or lumber deliveries need to pass through
• Common conflict: Fence contractor sets posts where deck stairs will land — walk the site together first

5. Deck decking and railings (Week 5-7)

Once framing passes inspection, decking and railings go on. This generates significant debris and foot traffic.

• Coordinate with: Keep fence work at least 10 feet away from active deck construction
• Material staging: Designate a staging area for deck materials that doesn't block patio work

6. Patio and hardscaping (Week 6-8)

Patio base excavation, compaction, and installation happen last. This work involves heavy equipment, excavation, and granular fill — you don't want this happening near a finished deck.

• Coordinate with: Patio contractor needs to know deck drainage plan to slope patio away from deck footings
• Access requirement: Ensure bobcat or mini-excavator can reach work area without driving over completed work

Real-world timing: Add 2-3 weeks of buffer for weather delays, permit processing, and inspection scheduling. A deck-fence-patio project typically takes 8-12 weeks from first shovel to final cleanup in Ontario's construction season (May-October).

The Critical Pre-Construction Meeting

Get all three contractors on-site together before anyone starts work. This 30-minute meeting prevents 90% of coordination problems.

What to cover:

• Site access and staging areas: Where does each contractor park, store materials, and place dumpsters?
• Shared property boundaries: If fence sits on property line, who's responsible if patio work disturbs it?
• Grade transitions: How does deck height relate to patio elevation? Who builds the stairs connecting them?
• Utility locations: Electrician walks everyone through buried conduit locations
• Overlap zones: Where does deck end and patio begin? Who's responsible for that 2-foot gap?
• Debris removal: Who hauls away excavated soil? Who's responsible for daily site cleanup?

Document everything. Take photos of existing conditions. Mark utility locations with spray paint. Get each contractor to sign off on the scope boundaries.

Payment Structure That Protects You

Never pay more than 30% upfront to any contractor. Ontario has no mandatory deposit limits, but the Canadian Home Builders' Association recommends this structure:

Per contractor:

• 10-15% deposit: Secures your spot in the schedule and covers initial material orders
• 30-40% after rough-in: Deck footings/framing, fence posts set, patio base excavated
• 30-40% at substantial completion: Deck decking/railings done, fence boards up, patio surface installed
• 10-20% final payment: After final inspection, cleanup complete, and any deficiencies corrected

For a $45,000 total project ($25,000 deck, $12,000 fence, $8,000 patio):

• Deck builder: $3,750 deposit, $10,000 at framing, $8,750 at decking, $2,500 final
• Fence contractor: $1,800 deposit, $4,800 at posts, $4,200 at boards, $1,200 final
• Patio installer: $1,200 deposit, $3,200 at base, $2,800 at surface, $800 final

Never pay contractor B's deposit until contractor A finishes their phase. This keeps everyone accountable and ensures you have leverage if delays cascade.

Contracts: What Each One Needs

Every contractor gets a separate contract. Use a standard deck builder contract template and adapt it for fence and patio work.

Every contract must specify:

• Detailed scope with measurements: Not "build a deck" — "build 16x20 ft deck, 42" high, PT joists on 16" centres, composite decking, aluminum railings"
• Start and completion dates: Include language for weather delays (typically 3 rain days don't delay completion date)
• Total price breakdown: Separate labour and materials so you understand cost structure
• Payment schedule tied to milestones: Exactly as outlined above
• Permit responsibility: Who pulls it, who pays for it (typical deck permit costs $50-200)
• Cleanup and waste removal: Who hauls debris, how often is site cleaned
• Warranty terms: Minimum 1-year workmanship warranty, manufacturer warranties on materials
• Change order process: How are additions/changes priced and approved

Add a coordination clause: "Contractor agrees to coordinate site access, material deliveries, and work schedule with other trades as directed by homeowner. Contractor will attend pre-construction meeting with other trades."

Insurance requirement: Every contractor must provide $2 million liability insurance certificate naming you as additional insured. No exceptions.

Handling Delays and Conflicts

Weather delays in Ontario are normal. May-October is prime building season, but expect 10-15 rain days that halt concrete work, excavation, and finishing. Build this into your timeline.

Permit delays happen. KWC municipalities take 2-4 weeks to process deck permits, sometimes longer in spring. Don't blame the deck builder if the city is slow.

When contractor A delays contractor B:

If the deck builder runs two weeks late and the fence contractor has another job scheduled, you're stuck. Your contract should address this:

"If homeowner-caused delays exceed 7 days, contractor may reschedule work based on availability. If contractor-caused delays exceed 7 days, contractor will prioritize completion before starting next project."

When contractors blame each other:

Fence contractor: "We can't set posts until the deck is done."

Deck builder: "We can't finish the stairs until the fence is out of the way."

Your move: Refer to the site plan you all signed at the pre-construction meeting. If it's genuinely ambiguous, offer to pay for a solution (extra trip charge for the fence contractor to come back and finish, for example). Log this as a lesson learned for next time.

When someone damages another's work:

Patio contractor's bobcat tears up new sod the landscaper just laid. Deck builder's lumber delivery cracks a fence post.

Your contract should say: "Contractor is responsible for protecting completed work by other trades and repairing any damage caused by their crew or material deliveries."

Reality: Getting contractor B to pay for damage is hard. Better approach is prevention — schedule work so heavy equipment and deliveries happen before delicate finishing work.

Managing Inspections Across Trades

Deck inspection requirements in KWC:

• Footing inspection before pouring concrete
• Framing inspection before decking goes on
• Final inspection after railings installed

Read the full inspection process

Fence and patio typically don't require permits unless they exceed height limits (6 ft in rear yard, 3-4 ft in front) or involve structural retaining walls over 1 meter.

Inspection timing problems:

Deck builder is ready for framing inspection, but inspector is booked two weeks out. Your fence contractor was supposed to start next week, now everyone's schedule shifts.

Solutions:

• Book inspections early — as soon as the previous phase is near completion
• Communicate inspection delays to all contractors immediately
• Have backup work planned (fence contractor can start on the far side of yard while waiting for deck access)

Cost Breakdown: What to Expect in Ontario (2026)

Sample 16x20 ft deck + 120 linear feet fence + 12x16 ft patio:

Deck (320 sq ft, composite decking, aluminum railings):

• Materials: $12,000-15,000
• Labour: $8,000-10,000
• Permit: $150-250
• Total: $20,150-25,250

Fence (120 linear feet, 6 ft privacy, pressure-treated pine):

• Materials: $2,400-3,600
• Labour: $3,600-6,000
• Permit (if required): $50-150
• Total: $6,050-9,750

Patio (192 sq ft, interlocking concrete pavers, 6" granular base):

• Materials: $2,900-3,800
• Labour: $3,800-5,700
• Base materials: $600-900
• Total: $7,300-10,400

Project total: $33,500-45,400

Compare this to a general contractor managing all three trades: $40,000-55,000 (15-25% markup on subs).

You save $6,500-9,600 by managing it yourself — but you're now the project manager.

Common Questions

Should I hire one contractor for everything or split it up?

Split it up if: Your project is large (deck over 300 sq ft), you want specialists for each trade, and you're comfortable managing schedules. You'll save 15-25% compared to a general contractor's markup.

Hire one contractor if: Your project is small, you value simplicity over cost savings, or you don't have time to coordinate multiple trades. Expect to pay $40,000-55,000 for a project that would cost $33,500-45,400 when self-managed.

What happens if one contractor damages another's work?

Your contract should state that each contractor is responsible for protecting completed work and repairing damage their crew causes. In practice, proving fault is difficult. Better strategy: schedule heavy equipment work (excavation, material deliveries) before finishing work (fence boards, deck railings, patio surface).

How do I handle payment if the project gets delayed?

Never pay ahead of completed work. If the deck builder is two weeks late and hasn't reached the milestone that triggers the next payment, don't pay. Your payment schedule should be tied to milestones (framing complete, decking installed), not calendar dates. This protects you from paying for work that hasn't happened yet.

Do I need separate permits for deck, fence, and patio?

In KWC: Decks require permits if they're over 24 inches high or attached to the house. Fences typically don't require permits if under 6 feet in the rear yard (check your municipality). Patios rarely require permits unless they involve structural retaining walls over 1 meter. Each contractor should confirm permit requirements for their scope.

How much buffer time should I add to the schedule?

Add 2-3 weeks for a deck-fence-patio project. Typical delays: permit processing (1-2 weeks), inspection scheduling (3-5 days per inspection), weather delays (1-2 weeks of rain days May-October), and material delivery delays (1 week if custom orders are involved). A project that should take 6 weeks on paper typically takes 8-10 weeks in reality.