DIY vs. Pro Landscaping in Montreal: What You Can Do Yourself and When to Hire a Professional

Some outdoor projects are straightforward enough for any homeowner to handle with basic tools and a weekend. Others involve structural work and drainage engineering, or come with regulatory requirements that make professional help the smarter choice. Knowing the difference saves you money where it counts and prevents costly mistakes where it matters.

This guide breaks down common residential landscaping tasks into what you can confidently do yourself and what you should hire a professional for, with specific references to Quebec's licensing rules.

What You Can Safely Do Yourself

These tasks are well within the reach of most homeowners who are comfortable with basic yard work and hand tools.

Lawn Care and Maintenance

• Mowing, edging, and trimming.
• Overseeding bare patches.
• Aerating with a rented core aerator.
• Applying compost topdressing.
• Weed management in lawns and garden beds.

Lawn care requires no specialized licence and no heavy equipment. The main risk is overwatering, overfertilizing, or mowing too short, all of which are learning curve issues rather than safety hazards.

Garden Bed Planting and Maintenance

• Planting annuals, perennials, and small shrubs.
• Dividing and transplanting perennials.
• Mulching garden beds.
• Pruning small shrubs (under 2 metres tall).
• Building small raised garden beds from lumber or stone.

If the work involves planting, mulching, and light maintenance, it's a DIY-friendly task.

Simple Hardscape Projects

• Laying a small paver patio on a sand base (under 10 square metres).
• Setting stepping stones in a garden path.
• Installing a simple garden border with edging blocks.

Small-scale paver work is manageable for DIYers, but the quality depends heavily on proper base preparation. An insufficiently compacted base will heave and shift within a season or two. If you're unsure about base preparation, consult a professional before starting.

Seasonal Cleanup

• Spring and fall yard cleanup.
• Leaf raking and removal.
• Gutter cleaning.
• Winterizing garden beds and irrigation.

Fencing (Simple Installations)

• Installing a basic wooden or chain-link fence that is not attached to the building structure.

According to the Regie du batiment du Quebec (RBQ), installing a fence does not require a contractor's licence, provided the fence is not permanently attached to the main building structure (RBQ, Work Not Requiring a Licence). However, always check with your borough for permit requirements and setback rules before installing a fence.

When to Hire a Professional

These tasks involve complexity, safety risks, structural considerations, or regulatory requirements that make professional involvement important.

Large Paver Installations (Driveways, Large Patios, Walkways)

Any paver project larger than a small garden patio should be professionally installed. Our patio cost guide covers what professional installation costs, and the paver cost calculator gives you a quick estimate. Proper installation requires:

• Excavation to the correct depth (typically 30 to 45 cm in Montreal, depending on soil conditions and frost depth).
• Multiple layers of compacted granular base material.
• Correct slope and drainage engineering.
• Edge restraints that prevent lateral movement.
• Proper joint sand application.

A poorly installed paver driveway or large patio will develop visible problems within one to three years, including sinking, heaving, uneven surfaces, and water pooling. The cost to tear out and redo the work almost always exceeds the cost of hiring a professional the first time.

Retaining Walls

Retaining walls hold back soil and manage grade changes. Even a wall that looks simple involves structural engineering principles: lateral earth pressure, drainage behind the wall, geogrid reinforcement for taller walls, and proper footing depth.

In Quebec, if the retaining wall is connected to or affects the building's foundation or structure, an RBQ-licensed contractor may be required (RBQ, Work Requiring a Licence). Even for walls that do not touch the building, improper construction can result in wall failure, property damage, or drainage problems that affect neighbouring properties.

Drainage and Grading Work

If water pools near your foundation, runs toward your neighbour's property, or creates chronic wet spots in your yard, the solution usually involves regrading, installing French drains, or modifying downspout routing. This work requires:

• Understanding soil types and water flow patterns.
• Correct slope calculations.
• Proper drain tile installation with filter fabric and gravel.
• Knowledge of municipal regulations about directing water onto public or neighbouring property.

Drainage mistakes can redirect water problems rather than solve them, sometimes creating worse issues for your foundation or your neighbours.

Tree Removal and Large Tree Pruning

Tree removal, especially for trees near structures, power lines, or property lines, is dangerous work that requires specialized equipment and training. In Quebec, tree felling does not require an RBQ licence, but most municipalities (including Montreal boroughs) require a permit before removing a tree (RBQ, Work Not Requiring a Licence).

Hire a certified arborist for:

• Any tree removal.
• Pruning branches higher than you can safely reach from the ground.
• Trees near power lines (this is always a utility company or certified arborist job).
• Disease or pest diagnosis.

Electrical Work (Outdoor Lighting, Irrigation Controls)

Any work involving electrical wiring, including outdoor lighting circuits and irrigation controller wiring, requires a licensed electrician in Quebec. Low-voltage landscape lighting (12V systems) is generally exempt, but anything connected to your home's electrical panel at line voltage is regulated.

Work Attached to the Building Structure

This is the key dividing line for RBQ licensing in Quebec. The RBQ requires a contractor's licence for any construction work performed for a third party. Landscaping work is generally exempt from this requirement, but the exemption does not apply when the work is directly connected to the building's foundation or structure (RBQ, Work Requiring a Licence).

Examples of work that may require a licensed contractor:

• Building a deck attached to the house.
• Constructing a patio cover or pergola bolted to the building.
• Any excavation that affects the building's foundation or footing.
• Plumbing or electrical connections that tie into the building's systems.

Understanding Quebec's RBQ Licensing Rules

The Regie du batiment du Quebec (RBQ) regulates construction work in the province. Here's what homeowners should know:

What does not require an RBQ licence:

• General landscaping (planting, grading, sodding, mulching).
• Snow removal and de-icing.
• Tree felling (though a municipal permit may be required).
• Mowing and property maintenance.
• Installing a fence or above-ground pool not attached to the building.

(RBQ, Work Not Requiring a Licence; see also our RBQ licence landscaping guide)

What requires an RBQ licence (when done by a contractor for a client):

• Any construction work attached to or affecting the building structure.
• Deck construction attached to the house.
• Electrical and plumbing work.
• Major excavation near the foundation.

How to verify a contractor's licence:

Before hiring any contractor for work that requires an RBQ licence, verify their licence status on the RBQ's online registry at rbq.gouv.qc.ca. The registry shows whether the licence is active, what subclasses it covers, and whether any complaints have been filed.

Owner-builder exception:

If you are a homeowner doing work on your own single-family residence, you do not need an RBQ licence for most projects, including building your own deck or patio. However, the work must still comply with building codes and municipal bylaws. You also cannot use this exemption and then sell the property within a short period; the RBQ may require disclosure of self-performed work.

The Cost-Benefit Calculation

DIY saves money on labour, but only if the work is done correctly. For projects where errors are visible and easily fixed (garden planting, mulching, minor patching), the risk of DIY is low. For projects where errors are hidden until they cause major problems (drainage, base preparation, structural walls), the risk of DIY is high.

A useful rule of thumb: if the project involves moving earth or managing water, or if anything has to bear a structural load, the cost of professional installation is almost always less than the cost of repairing a failed DIY attempt.

Ready to Start a Project?

Montreal Paysagement Pro handles residential landscaping projects across Montreal, from walkway and patio installations to retaining walls and drainage solutions. We provide estimates by phone, photo, or video, with no on-site visit required. Call us at 514-900-3867 to discuss your project.

---

Sources:

• RBQ, Work Not Requiring a Licence
• RBQ, Work Requiring a Licence
• RBQ, All the Steps for Obtaining a Licence
• RBQ Licence and Landscaping in Quebec
• How to Choose a Landscaper in Montreal
• CAA-Quebec, Required Licences and Competency Certificates