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How do I normalize three Vancouver paver quotes when scopes differ?

Question

How do I normalize three Vancouver paver quotes when scopes differ?

Answer from Interlock IQ

Comparing paver quotes with different scopes requires breaking down each quote into its component parts and calculating per-square-foot costs for comparable elements. The key is identifying what's included versus excluded in each proposal, then adjusting for scope differences to make an apples-to-apples comparison.

Start by creating a standardized comparison sheet. List each quote's total price, square footage, and itemize what's included: excavation depth, base material type and thickness, geotextile fabric, bedding sand, paver type and thickness, edge restraints, polymeric sand, cleanup, and disposal. Many Metro Vancouver contractors bundle these differently — some include disposal of existing concrete in their base price while others add it as a separate line item that can add $2,000-$5,000 to your project cost.

Calculate the per-square-foot installed cost for each quote, but recognize this is just your starting point. A $18/sq ft quote that includes 8 inches of compacted gravel base, geotextile fabric, and premium polymeric sand is significantly better value than a $15/sq ft quote with 4 inches of base and standard sand. In Metro Vancouver's wet climate with clay-heavy soils, that extra base depth and proper materials are the difference between a patio that lasts 25 years versus one that starts settling within 2-3 years.

Pay special attention to base preparation specifications — this is where quotes differ most dramatically and where corners are most often cut. Proper patio installation requires 6-8 inches of compacted granular base in lifts, while driveways need 10-12 inches. If one contractor specifies 4 inches of base while another specifies 8 inches, the cheaper quote will likely result in settling and failure. Ask each contractor to specify their base material (3/4" minus crushed gravel is standard), compaction method (plate compactor in 2-inch lifts), and whether geotextile fabric is included between the clay subgrade and base material.

Examine paver specifications carefully. Standard 60mm pavers are adequate for patios and walkways, but driveways require 80mm pavers rated for vehicular traffic. If comparing natural stone to concrete pavers, factor in the 40-60% price premium for flagstone or slate. Permeable pavers cost 25-35% more than standard pavers but may qualify for municipal stormwater incentives. Premium manufacturers like Unilock, Techo-Bloc, or Belgard cost more than basic pavers but offer better colour consistency, surface texture, and warranty coverage.

Verify what type of joint sand is included. Standard mason sand will wash out within weeks in Metro Vancouver's rainfall, while polymeric sand (Techniseal, Alliance, Sakrete) hardens when activated and resists erosion. Polymeric sand adds $1-2 per square foot but is essential for long-term performance. If a quote doesn't specify polymeric sand, assume standard sand and add $200-$600 to normalize the comparison.

Account for site-specific factors that affect pricing. Sloped lots common in North Vancouver, West Vancouver, Burnaby, and Coquitlam require additional excavation, retaining structures, and drainage work that can add 20-40% to base costs. Properties without direct truck access for material delivery (common in older Vancouver neighbourhoods) require manual transport that adds $1,000-$5,000. If one contractor has factored these challenges while another hasn't, the lower quote may not be realistic.

Check what's excluded from each quote. Common exclusions include: removal and disposal of existing concrete or asphalt ($2,000-$5,000), electrical work for landscape lighting, irrigation system modifications, permit fees for retaining walls over 4 feet, strata alteration agreement fees, and winter weather delays. A quote that excludes disposal while others include it isn't necessarily trying to lowball — just make sure you're comparing equivalent scopes.

For retaining wall quotes, verify engineering requirements. Walls over 4 feet require geotechnical engineering and building permits in all Metro Vancouver municipalities. If one quote includes engineering fees ($1,500-$4,000) while another doesn't mention it, the lower quote is incomplete. Similarly, walls over 4 feet require geogrid reinforcement — if it's not specified, the quote doesn't meet BC Building Code requirements.

Create a normalized comparison by adjusting each quote to include identical scope. Add excluded items to quotes that don't include them, subtract premium upgrades to establish a baseline, and calculate the adjusted per-square-foot cost. This reveals which contractor offers the best value for equivalent work quality and scope.

Remember that the lowest normalized price isn't automatically the best choice. Verify each contractor's WorkSafeBC coverage, ask for recent project photos, and check references from jobs completed in the last two years. In Metro Vancouver's competitive market, contractors who are significantly cheaper often cut corners on base preparation, use inferior materials, or lack proper insurance coverage.

When to Hire a Pro: Normalizing quotes is something homeowners can do, but if the three quotes vary dramatically in scope or pricing (more than 40% difference), consider getting a fourth quote or consulting with an independent hardscape designer who can review the proposals and identify potential issues with the lowest bidder's approach.

Need help finding additional interlock contractors for comparison quotes? Vancouver Interlock can match you with experienced professionals from the Vancouver Construction Network who provide detailed, transparent proposals for your specific project requirements.

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