Bathroom Renovation Checklist: Plan Your Project Step by Step

A bathroom renovation is one of the most disruptive home improvement projects you can undertake. Unlike painting a room or replacing a few fixtures, a bathroom renovation typically involves plumbing, electrical work, tiling, flooring, and sometimes moving walls or drains. The complexity means there are many opportunities for things to go wrong.

This checklist breaks down every stage of a bathroom renovation, from initial planning to the final snagging. Use it as your roadmap — check off each item as you complete it, and you will avoid the most common mistakes that lead to budget overruns and delayed timelines.

Phase 1: Planning (4-8 Weeks Before)

Define Your Goals

• What do you want to achieve? (More space, better functionality, updated look, increased property value)
• Who will use the bathroom? (Family, couple, single person, elderly relative)
• What is non-negotiable? (A particular style, a specific fixture, accessibility features)

Set Your Budget

• Determine how much you can afford to spend
• Allocate funds: fixtures (25-30%), materials (25-30%), labour (35-45%), contingency (10-15%)
• Research typical costs in your area using UK averages as a guide

Measure Your Space

• Measure the room dimensions (length, width, height)
• Note the position of existing plumbing (soil stack, waste pipes, water supply)
• Identify window positions and sizes
• Check ceiling height and any beams or bulkheads

Research and Gather Inspiration

• Browse Pinterest, Houzz, and Instagram for bathroom ideas
• Visit showrooms (B&Q, Wickes, Victoria Plum, Victoria and Albert)
• Create a mood board or folder of must-have features

Research Your Fitter

• Get at least 3 quotes from vetted bathroom fitters
• Check qualifications (APHC, CIPHE membership)
• Verify insurance (minimum £1 million public liability)
• Ask for references and view previous work

Phase 2: Design (2-4 Weeks Before)

Finalise Your Layout

• Decide whether to keep existing plumbing or move it (moving plumbing adds cost)
• Plan the positions of key fixtures: toilet, basin, bath/shower
• Ensure adequate clearance around fixtures (UK Building Regulations specify minimums)
• Consider ventilation and extractor fan requirements

Choose Your Fixtures

• Toilet (close-coupled, back-to-wall, wall-hung)
• Basin (pedestal, wall-hung, vanity unit, countertop)
• Bath (straight, L-shaped, corner, shower-bath)
• Shower (walk-in, quadrant, enclosed)
• Taps and mixers (matching style across all fixtures)

Choose Your Tiles

• Wall tiles (material, size, colour, finish)
• Floor tiles (material, size, slip resistance)
• Calculate quantities (add 10-15% for cuts and waste)
• Choose grout colour

Choose Accessories and Extras

• Towel rails and radiators
• Extractor fan (with timer, humidity sensor, or pull cord)
• Lighting (ambient, task, accent)
• Mirror or mirrored cabinet
• Shower accessories (toiletries niche, grab rails)

Phase 3: Pre-Start (1-2 Weeks Before)

Confirm Your Fitter

• Sign a written contract with scope, timeline, and payment schedule
• Confirm start date and expected duration
• Discuss access arrangements and site security
• Agree on waste disposal arrangements

Order Materials

• Order fixtures and fittings
• Order tiles, grout, and adhesive
• Order flooring (if not tiles)
• Order any custom items (shower screens, made-to-measure cabinets)

Prepare Your Home

• Clear the bathroom completely
• Protect adjacent rooms from dust and debris
• Ensure access for the fitter (parking, entry codes)
• Arrange alternative bathroom facilities if needed

Phase 4: During the Renovation

Day 1-2: Strip Out

• Remove old fixtures, tiles, and flooring
• Assess substrate condition (plaster, walls, floor)
• Remove any damaged or rotten areas
• Dispose of waste

Day 3-5: First Fix

• Plumbing modifications and moving waste/soil pipes
• Electrical first fix (new circuits, extractor fan, shaver socket)
• Plastering or dry-lining walls if needed
• Install backer board for wet areas

Day 6-10: Tiling and Flooring

• Tile walls (start from level reference lines)
• Tile floors (use appropriate adhesive and grout)
• Allow adequate drying time before grouting
• Apply silicone sealant around edges

Day 11-14: Second Fix

• Install sanitaryware (toilet, basin, bath)
• Install shower enclosure or walk-in
• Fit taps, mixers, and traps
• Install lighting, mirrors, and accessories
• Connect to existing plumbing and test

Day 15: Finishing

• Final cleaning
• Snagging (check everything works, fix any issues)
• Walkthrough with fitter
• Final payment (only after satisfactory completion)

Phase 5: After Completion

• Test everything thoroughly (toilet flush, taps, shower, drainage)
• Check for leaks under sinks and around bath
• Ensure extractor fan works and is vented properly
• Verify all silicone seals are neat and complete
• Keep contact details for any warranty issues
• Take photos of the finished bathroom for your records

Common Mistakes to Avoid

• Not budgeting for contingencies: Always add 10-20% for unexpected costs
• Ordering fixtures before measuring: Wait until your fitter has surveyed the space
• Choosing style over function: A beautiful bathroom that does not work for your needs is a waste
• Skipping ventilation: Proper extraction prevents mould and damp
• Not allowing drying time: Tiling over damp backgrounds causes problems
• Hiring based on price alone: The cheapest quote often ends up most expensive

Ready to start your bathroom renovation? Connect with vetted bathroom fitters who can bring your vision to life.