Your Extension, Planned. Your Materials, Compared.
Your Budget, Nailed.

PriceNailer tracks live prices from 14 major UK builders merchants including Selco, Travis Perkins, B&Q, Jewson and Wickes. We automatically collect and update prices across 240+ building materials so you can compare costs side-by-side without visiting each supplier's website individually.

Yes, PriceNailer is completely free for homeowners, builders and tradespeople. You can compare prices, use our calculators (including the extension cost calculator and project planner), browse guides and request quotes from local suppliers -all at no cost.

We cover 10 major categories including timber, insulation, plasterboard, bricks and blocks, cement and render, roofing, builders metalwork, lintels, plastics and drainage, and more. Each category contains multiple subcategories with detailed product specifications and live pricing.

Prices are updated regularly to ensure accuracy. We track over 1,100 individual price points across our supplier network. While prices can change at any time, our system checks for updates frequently so you see the most current costs available.

Absolutely. Our free extension cost calculator gives you an instant, detailed cost estimate based on your project specifics -size, location, finishes and build type. We also offer an extension project planner that breaks your build into 8 phases with task tracking, inspection reminders and AI-powered tips.

Once you've found the materials you need, you can create a project list and submit it as a quote request. Local suppliers in our network will review your requirements and send you personalised pricing. This is especially useful for bulk orders where trade discounts can save you significantly.