How much does it cost to resurface and widen my driveway at the same time in Ottawa?

Combining driveway resurfacing with widening in Ottawa typically costs $8,000 to $18,000 for an average residential project, depending on the size of the extension and whether the existing base can support an overlay.

The complexity comes from the fact that you're essentially doing two different types of work. Resurfacing involves placing a new asphalt layer over your existing driveway (assuming the base is stable), while widening requires full excavation, base preparation, and new construction for the extension area. The challenge is making these two sections work together structurally and aesthetically.

For the resurfacing portion, expect $4 to $7 per square foot if your existing driveway has a stable base with only surface-level cracking and wear. However, if th existing base has failed or there's significant settling, you'll need full removal and replacement rather than resurfacing, which jumps to $8 to $13 per square foot. In Ottawa's freeze-thaw climate, many driveways that appear suitable for resurfacing actually have underlying base issues that become apparent once the contractor starts the work.

For the widening portion, you're looking at $8 to $13 per square foot for new construction, including excavation to 18 inches below grade (Ottawa's frost depth requirement), placement of 300mm Granular B sub-base and 150mm Granular A base, and two-lift asphalt installation. The new section must be built to current standards even if your existing driveway has a thinner base from decades ago.

Ottawa-specific considerations make this more complex than in milder climates. The new and existing sections must have identical drainage slopes to prevent ice buildup at the seam. Clay soils prevalent in Barrhaven, Orleans, and Gloucester require geotextile fabric under the new base to prevent soil migration. The contractor must also ensure the tie-in between old and new asphalt creates a weatherproof seam that won't separate during freeze-thaw cycles.

Permit requirements depend on whether you're changing the curb cut or driveway opening onto the street. If you're just widening within your existing driveway footprint, no permit is typically required. However, if the widening changes your driveway entrance or requires work in the municipal right-of-way, you'll need a City of Ottawa permit (call 3-1-1) and the work must meet municipal standards.

Timing is critical for this type of project. The work should be completed between late May and early October when asphalt can be properly compacted. Many contractors prefer to do combination projects in late summer (August-September) when weather is most predictable and material availability is good.

When to hire a professional: This is definitely contractor work requiring excavation equipment, proper base compaction, and hot-mix asphalt placement equipment. The structural tie-in between existing and new sections requires professional expertise to prevent separation and water infiltration.

Get quotes from at least three paving contractors and ensure they inspect your existing driveway base before providing estimates. Many projects that start as "resurfacing plus widening" end up as full replacement once the contractor discovers the existing base won't support an overlay.

Need help finding a driveway contractor? Ottawa Driveways can match you with experienced paving professionals through the Ottawa Construction Network for free estimates on your project.

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Ottawa Driveways connects you with experienced driveway and paving contractors through the Ottawa Construction Network:

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