For many Guildford homeowners, the loft remains one of the most underutilised areas of the house. A well-designed loft conversion can transform this unused space into a valuable and functional part of your home. Whether you're in need of a new bedroom, home office, or an additional living area, converting your loft is a smart way to expand without altering your property’s footprint. At CATH Services, we help you unlock the full potential of your loft with designs that maximise light, headroom, and practicality, all while enhancing the overall feel of your home.
A loft conversion is one of the most cost-effective ways to increase the market value of your property. In many cases, it can add up to 20% to the resale value—particularly in desirable areas like Guildford where space is at a premium. Prospective buyers are increasingly drawn to homes that offer additional rooms and flexible layouts. At CATH Services, we focus on creating conversions that not only meet your lifestyle needs now but also deliver excellent return on investment when the time comes to sell.
Outgrowing your home doesn't mean you have to move. With a loft conversion, you can gain the extra space you need without the stress and costs of relocating. Avoid estate agents, removals, stamp duty, and the upheaval of changing schools or commuting routes. Our team at CATH Services works closely with homeowners in Guildford who love their neighbourhood but need more room. We provide a seamless, well-managed solution that allows you to stay put while enjoying the benefits of a more spacious and functional home.
Every home is different, and so is every loft conversion we build. At CATH Services, we take the time to understand your lifestyle, tastes, and space requirements. Whether you're looking for a minimalist guest room or a fully fitted master suite with an en-suite bathroom, we design around your needs and the unique character of your property. Our bespoke approach ensures your new loft blends seamlessly with the rest of your home, both structurally and aesthetically.
We understand that building work can be daunting, which is why CATH Services handles every aspect of your loft conversion—from initial planning and design to final finishing touches. Our experienced team coordinates all trades, manages timelines, and keeps you informed throughout. You’ll have a dedicated point of contact and a clear schedule, giving you peace of mind from start to finish. We take care of the technical details so you can enjoy the transformation without the stress.
Our reputation in Guildford and surrounding areas is built on exceptional workmanship. We use only trusted materials and work with skilled tradespeople to ensure your loft conversion is built to last. From insulation and structural integrity to fixtures and final finishes, every detail is delivered to the highest standard. At CATH Services, we believe quality is non-negotiable, and it shows in the results our clients enjoy—spaces that are not only beautiful but also durable and energy-efficient.
Not all loft conversions require planning permission, but it's important to understand when it does apply. If your design alters the roof shape or height, or if your home is in a conservation area or a listed building, formal planning approval from Guildford Borough Council may be necessary. CATH Services can advise you from the outset and, if required, prepare and submit all the necessary drawings and documents on your behalf, ensuring a smooth process.
Many loft conversions in Guildford fall under permitted development, meaning they don’t require formal planning permission if certain conditions are met. This includes limits on roof height, dormer size, and proximity to boundaries. Our team is fully up to date with the latest regulations and can help design a conversion that maximises your space while staying compliant. We’ll also liaise with your local authority to confirm your rights and avoid unnecessary delays.
Even if planning permission isn’t required, all loft conversions must meet UK building regulations covering structural safety, fire protection, insulation, access, and ventilation. At CATH Services, we manage every stage of the compliance process, from structural calculations to final sign-off by the local building inspector. Our clients benefit from complete peace of mind, knowing that their conversion is fully certified, safe, and ready for use—and adds long-term value to the property.
CATH Services has built a strong reputation across Guildford and Surrey for delivering high-quality loft conversions with a personal touch. Our team of skilled builders and tradespeople have decades of combined experience in residential construction. We understand the local area, planning guidelines, and property styles, which allows us to deliver conversions that are both functional and in keeping with your home. With a track record of successful projects and satisfied clients, we’re a name you can trust to handle your build with care and professionalism.
When you choose CATH Services, there are no hidden surprises. We provide clear, detailed quotes so you know exactly what’s included and what to expect. Our team works to agreed schedules and keeps you updated throughout the process, avoiding delays and unnecessary costs. We know how important your time and budget are, and we pride ourselves on delivering quality work within the timeframe promised—making your loft conversion a stress-free experience from start to finish.
We’re proud of the strong relationships we’ve built with our clients. Many Guildford homeowners have returned to us for additional work or recommended us to family and friends. Our reviews consistently highlight our friendly team, professional conduct, and excellent results. From first consultation to project completion, we focus on clear communication and outstanding workmanship. Take a look at our testimonials to see why so many local residents choose CATH Services for their loft conversions and home improvements.
Ready to explore your loft’s potential? Our expert team is here to help. We offer a free, no-obligation consultation to discuss your ideas, assess your space, and provide initial advice on design, budget, and timescales. Whether you’re in central Guildford or the surrounding villages, we’ll come to you and give honest, professional guidance on the best way forward. It’s the first step toward a home that truly works for you.
Nothing speaks louder than results. Visit our portfolio to see completed loft conversions and home extension projects across Guildford, Godalming, Farnham, and beyond. Each project showcases our commitment to quality, creativity, and attention to detail. From modern dormer conversions to traditional roofline builds, you’ll see the difference a well-executed design makes. At CATH Services, we don’t just build lofts—we create beautiful, usable spaces that homeowners love.
At CATH Services, we provide a complete range of building and property improvement solutions for homeowners across Surrey, Hampshire and West Sussex. Our experienced team is committed to delivering exceptional craftsmanship, reliable service and results that transform your home. Here’s an overview of the services we offer.
There are countless reasons to choose CATH Services, but most importantly is our customer-focused approached that combines excellent workmanship with honesty and integrity

Public liability insurance up to 5 million pounds.

We have no hidden costs, so the price you're quoted is the price you'll pay.

We pride ourselves on ensuring that every client is left happy.

We use the very latest in equipment and have a fully trained team.
“CATH Services did an amazing job on our home extension. The team was professional, communicative, and delivered exactly what we envisioned. The attention to detail was outstanding, and they left everything spotless. Highly recommend!”
— Mark E
“We had our kitchen completely renovated, and the results are fantastic. The workmanship is top-notch, and the project was completed on time and within budget. It’s clear they take great pride in their work. Will definitely use them again!”
— Samantha F
“Excellent service from start to finish. The team transformed our outdated bathroom into a modern space that looks incredible. They were polite, efficient, and kept disruption to a minimum. I wouldn’t hesitate to recommend them!”
— David S
“CATH Services recently renovated our entire ground floor, and we couldn't be happier. They provided expert advice, used high-quality materials, and finished ahead of schedule.”
— Elaine R
“Peter and Gary are conscientious and thorough. They have done a number of jobs for us over the last 18 months, all of which have been completed to a high standard. They always leave the place clean and tidy. I can definitely recommend them.”
— Gill Lowe
“I know my ratings seem too good to be true, but we genuinely cannot fault Cath Services work. Peter and Gary have been brilliant, it doesn't matter what challenge you throw at them, they seem to be able to handle it and produce an excellent result. I would recommend them to anyone and everyone.”
— Caryn C
“I have used Cath Services for different jobs during a couple of years, such as fencing, cleaning roof and paving, new paving, clear out overgrown part of garden, etc. They are always in time, work very hard and finish with the best quality and neatness. Would never ask someone else to help me around my house and will highly recommend them to family and friends.”
— Agneta
“This is the second time I’ve used Cath Services. The first was for internal alterations and a bathroom at a previous property. Peter and Adam have done another beautiful job with my two bathrooms this time. Their attention to detail, ideas for a better finish, and how they think through the job to ensure the best outcome is outstanding…”
— Emma E
“I'm based in Witley, and have now used Peter and the team at Cath Services Ltd for several years. They quickly became my trusted company for any work around the house or garden. They have done projects including a driveway, bathroom refurbishment, wooden flooring, decking, paving, gate installation, and more. The quality is outstanding and I've always been delighted with the outcome…”
— Garth H
“I highly recommend Peter and his team for all job inside and outside the house. The quality of their performance is matching with the highest expectations. They are creative and helpful, having excellent ideas and don't know impossible. Do not hesitate to contact them if you need a professional help.”
— Melinda
“Peter and the team are our go-to for any outdoor work needed, be it fencing, landscaping, window or gutter cleaning. They do it all with the highest attention to detail, professionalism and skill. We’ll be seeing you soon again I’m sure guys!”
— Julia B
“Excellent company and delighted to recommend them. They arrive when they say they will and they get on with the job. Quality workmanship and attention to detail as well as being tidy.”
— Martin H
“They always do a great job, come on time and do windows. Often other little jobs too. Gutters and solar panels…”
— Jane DFind answers to common questions about our building and renovation services, how we work, and what to expect when you choose CATH Services. We’re here to help you plan your project with confidence and make informed decisions for your home.
We pride ourselves on reliability, fair pricing, and delivering every project with care and attention to your safety and satisfaction.
CATH Services supports homeowners and businesses across Surrey, Hampshire, and West Sussex. Whether you’re planning a renovation, extension, or general building work, we’re here to help – get in touch today.
Phone: 01483 663463
Email: info@cathservices.co.uk
Address: 25 Waverleigh Rd, Cranleigh GU6 8BZ