A bathroom renovation isn’t just about creating a stylish space to unwind – it’s also a smart way to increase your home’s value. In fact, in the UK, a well-done bathroom update can add between 4% - 5% to your property’s worth. Think about it: a bathroom is one of the busiest rooms in the house, used day in and day out. You want it to be a relaxing, inviting space, right?

Not only will a modern, attractive bathroom make your home more appealing to potential buyers, but it can also help lower your monthly bills with features like water-saving fixtures. And let’s be honest, who doesn’t love a little extra luxury when they’re having a soak or enjoying a shower?

In this guide, we’ll walk you through everything you need to know about planning your bathroom renovation, including how to design a space that looks great and adds value to your home.

(Fitted Furniture - Midnight Grey) 

1. Planning Your Bathroom Renovation

How Do You Start Planning?

When planning a bathroom renovation, the first thing to consider is why you’re doing it. Are you just giving it a quick update, or are you doing a complete overhaul? Consider these key points:

• Who will be using the bathroom? Whether it’s just you and a partner, or a large family with different needs, your bathroom should work for everyone. If you have family members with accessibility needs, this is the perfect time to include features that make the space easier to use for them.
• What do you dislike about your current bathroom? Is it cramped, outdated, or just not functional? Take note of what’s bothering you so you can make your new bathroom work better for your lifestyle.

Once you’ve identified your goals, it’s time to think about layout and design. Don’t forget to set a budget early on – know how much you’re willing to spend on materials and labour. It’s also helpful to get a professional to measure your space. At MKM, we offer a free home measure and design service when you order your bathroom products from us, so we can help take some of the stress off your shoulders.

Where Do You Begin?

• Make a plan: Assess your needs. Do you need more storage or extra space for a bigger shower? Are there any features you need to make the bathroom more accessible?
• Choose your design and layout: Think about how the space will work for you. Do you need extra radiators or storage? Where will the bath be placed?
• Find an installer: If you’re hiring a pro, it’s a good idea to discuss your plan with them early on. After your free design consultation with MKM, you can share these plans with your installer and set a date to start. Don’t forget, MKM offers free delivery of your products, so you’ll have everything when you need it.
• Clear the area: Before the work starts, make sure to remove all old fixtures and debris. You can either do this yourself or let your installer handle it.

Do You Need Planning Permission?
Generally, you won’t need planning permission for a standard bathroom renovation unless you’re extending your home. However, if your home is a listed building, it’s always good to check with the local planning authority first.

2. Budgeting for Your Renovation

How Much Does a Bathroom Renovation Cost?

In 2025, according to Checkatrade, the average cost of a new bathroom in the UK is around £7,000, with removing your old bathroom running between £600 - £1,000. But if you’re going for a luxury bathroom remodel with high-end features, you could be looking at spending upwards of £14,000.

When planning your budget, remember to include the entire project – not just the big-ticket items like your bath, toilet, or shower. You’ll also need to think about flooring, tiling, plastering, and possibly electrical work or plumbing updates. For a smooth experience, it’s important to plan for these extras early so you don’t end up with any nasty surprises.

What’s the Most Expensive Part of a Bathroom Renovation?

The costliest part of any renovation tends to be the labour. Hiring skilled tradespeople is crucial to ensuring that the work is done right – especially for complex tasks like plumbing and fitting fixtures. High-end products, like freestanding baths or luxury shower setups, can also push up the cost. If you’re working with a tighter budget, consider looking for high-quality, budget-friendly alternatives that look just as stylish but won’t break the bank. Our in-branch specialists can help you design a bathroom that not only fits your style, but your budget too - for free!

(Distinct 6 Inline Shower Enclosure- Black) 

Can I Save Money on My Renovation?

If you’re keen on giving your bathroom a fresh new look but can’t afford a full overhaul, there are plenty of ways to update your space without spending a fortune:

• Swap out old taps for sleek, modern ones.
• Ditch the shower curtain for a stylish bath screen – they’re easy to clean and last longer.
• Upgrade your lighting with a new mirror or pendant light.
• Consider vinyl flooring for a quick and affordable refresh – it can be laid right over existing flooring.

(Coral Circular Mirror)

Common Unexpected Expenses

While most renovations go smoothly, it’s always good to prepare for the unexpected. Here are some common issues that can pop up:

• Plumbing problems – hidden leaks or damaged pipes.
• Electrical issues – outdated wiring or moving electrical points.
• Structural problems – damp walls or rotting joists.
• Removal – taking out old tiles or fixtures might require additional plastering or flooring repairs.

3. Design Tips to Maximise Space and Style

Where to Begin with Design?

When designing your new bathroom, think about layout first. Is your current layout working, or could it be improved? Look at any pain points – maybe the toilet is too close to the bath, or the door swings becomes an obstruction.  Address these issues in your new design.

For small bathrooms, get creative! In the UK, the average bathroom size is just 2m x 2m, about the size of a king-size bed. Here are some tips to make the most of that limited space:

• Wall-hung furniture gives the illusion of more space.

(Ideal Standard I-Life B 600mm Wall Hung Vanity with 2 Drawers in Matt Quartz Grey)

• Shower baths combine the best of both worlds and save room.

(Ness Premiercast Keyhole Shower Bath)

• Mirrors and lighting can make your bathroom feel bigger and brighter.

2025 Bathroom Trends to Watch

In 2025, the bathroom design trends are all about timeless style with a few modern twists:

• Open spaces like freestanding baths and wet rooms are making a comeback.

(Scotia Freestanding Bath) 

• Moody dark décor with rich tones like dark slate, marble, and deep reds.

(Multipanel Concrete Elements Wall Panelling)

• Metallic accents in gold, bronze, or gunmetal grey add a touch of elegance.

(300mm Fluted Pivoting Deflector Wet Room Panel)

• Terracotta and avocado are back in a big way, with a modern spin.

(Fairmont Freerstanding 1000 Unit in Terra) 

4. How Long Will My Renovation Take?

The time it takes to renovate a bathroom can vary depending on the scope of the work. A full renovation can take anywhere from two weeks to a month, depending on the complexity of the project and the availability of materials. Keep in mind that plumbing work, tiling, and drying times for grout or silicone will add time to the overall process.

Living with a Renovation in Progress

While your bathroom is being renovated, consider setting up a temporary wash station in your kitchen or going to a friend’s house. If you can, book a short getaway and skip the mess for a few days! And if you're a gym-goer, you can always take advantage of their showers.

5. Do New Bathrooms Add Value to UK Homes?

Yes, absolutely! A new bathroom can significantly increase the value of your home. An updated, functional, and stylish bathroom is a big selling point for potential buyers and can help you secure a higher sale price.

What Adds the Most Value?

• Functionality: Walk-in showers, double sink vanities, and smart storage are all great options.
• Luxury Features: Underfloor heating, rainfall showers, and freestanding bathtubs bring a spa-like vibe.
• Upgrades: Fresh, high-quality tiles, new lighting, and updated fixtures can make a big difference without costing the earth.

6. Final Thoughts: Getting the Most from Your Bathroom Renovation

When designing your bathroom, focus on creating a functional space that works for your needs. Plan carefully, work with skilled tradespeople, and set a realistic budget. With the right approach, your bathroom renovation can add both value and style to your home.

Ready to Renovate? Visit your local MKM Building Supplies branch, enquire for a design appointment or request a brochure online to start designing your dream bathroom today!

Sources:

• How Much Does A New Bathroom Cost In 2025? | Checkatrade
• Best & Worst Renovations to Add Value to your Property
• The Ultimate Guide to House Extensions
• House Extensions | Everything in one place for extending a home @ mkm.com
• Planning Permission - Kitchens and bathrooms - Planning Portal
• Fitted Bathroom Size Requirements: The Perfect Size For You
• A Dozen Upcoming Bathroom Trends 2025 | PORCELANOSA
• 2025 Bathroom Trends You're Going to Love | Roper Rhodes
• How long does it take to remodel a bathroom? - MyJobQuote