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Renovation Calculator

Estimate kitchen, bathroom or full home renovation costs.

Setting a Realistic Renovation Budget

Renovation costs are notoriously difficult to estimate without opening walls and floors to see what lies beneath. This tool gives you a starting range to work with before you engage contractors. For an accurate budget, commission a pre-purchase or pre-renovation survey to identify hidden issues. Include contingency funds of at least 15 to 20 percent of the estimated cost. Underfunding a renovation leads to compromises mid-project or stalled work, both of which cost more in the long run than proper upfront planning.

What Affects Kitchen Renovation Costs

Kitchen renovations vary enormously based on the size of the space, the level of finish, and whether plumbing and electrics need moving. A budget kitchen refurbishment with flat-pack units, standard appliances, and a basic worktop will cost a fraction of a full remodel with bespoke cabinetry, quartz worktops, and integrated appliances. Structural changes like removing a wall to create an open-plan kitchen-diner significantly increase cost due to structural engineering and steel beam installation.

Bathroom Renovation Cost Factors

Bathroom renovation costs are driven by room size, the quality of sanitaryware chosen, whether the layout changes, and whether waterproofing is required for a walk-in shower. Moving the soil stack or altering drain runs significantly increases plumbing costs. Tiling both walls and floors is expensive due to labour time for preparation, levelling, and grouting. Budget bathrooms can be achieved with standard suites from DIY retailers, while a luxury fit-out with freestanding baths, underfloor heating, and designer tiles commands a premium.

Planning Permission for Renovations

Most internal renovation work does not require planning permission, but there are important exceptions. Structural changes including removing load-bearing walls require building regulations approval even without planning permission. Extensions and loft conversions require planning permission in most cases, though Permitted Development rights allow some projects without formal applications. Listed buildings require listed building consent for any alterations affecting the character of the structure. Always check with your local planning authority before starting work.

Frequently Asked Questions

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