The quick way to find a local Cellar & Basement Conversion specialist in Harrow

Post your job for free. Get quotes. Read reviews.

Over 10,000 rated tradespeople
are ready to help you get your job done

Over 3 million happy homeowners
have found a quality tradesperson

Over 1 million ratings
with 88,000 5* ratings in the last 12 months

Join our group of happy customers

Thousands of 5 star reviews

Read real reviews from customers about their service experiences.

Craig got in touch quickly, gave me a rough estimate over the phone and answered all my questions. Surveyor arrived on time, gave instant quote. Price was good. Michael and (another) Craig turned up to do the job on the day, time given. Good, tidy job. Can't fault anything, from start to finish!! Would recommend!

Mary

George and his team are experienced builders, replaced my front door with a custom frame/sidelights and raising the floor level in the hallway quite quickly - in fact, they were the only who came next day, gave a quote straightaway and were ready to start in just couple of days. They also had all the necessary tools and materials, were ready to buy something additional quickly on the day - if further adjustments were required to fit everything as I asked. Thanks a lot for your help, guys!

Dmitry

Highly recommend. These guys did a fantastic job of constructing our pergola and decking. Very hardworking and reliable. The job was completed in the time frame agreed and to a very high standard. We would 100% use them again.

Holly

Browse Cellar & Basement Conversion specialists

Take a look at our Cellar & Basement Conversion specialists profiles, read reviews and request quotes directly.

building roofs carpentry loft conversion extension Skylight. Velux slate tile lead work gutters pipes pvc fasia. grp fibreglass. Flat roof pitch roof zinc roof hot melt roof asphalt roof waterproofing paint for new roof we give you 15 years warranty

Experience in: Tiling Plastering Painting Laminating Bathrooms Roofing Block paving Brick work Garage conversion Extension Mould Treatment END MORE

Latest homeowner review
full starfull starfull starfull starfull star
Reviewed by Fay on 28/3/2025

Peter is professional and has done a good job.

H&R Renovations ltd always aims to deliver a high standards of work qualities to satisfy all my clients expectations and meet theirs satification.

Gulf Builder Ltd company made up of a highly skilled team of professionals who will take all the hard work out of your house refurbishment in London. Whether you want to refurbish your entire house or a single room. You can read below what else we do; - Transforming Spaces, Inspiring Lives. - Revive, Renew, Redefine. - Renovate and Elevate. - The Art of Renovation. - Design. Renovate. Inspire. - Your Vision, Our Expertise. - Discover the Joy of a Perfectly Renovated Space - Turning ideas into action. - Built on trust, focused on quality.

Latest homeowner review
full starfull starfull starfull starfull star
Reviewed by Hoss on 5/8/2024

I was looking for a builder to do an extension at back. Gulf Builder provided me with advice on materials, exact cost and time. They have done a fantastic job in short span of time and delivered the job to my absolute satisfaction. Rare to find.

Electrical, Mechanical & Building Services. Electrical installation Extensions Conversions Kitchens Bathrooms Refurbishments All associated building works NICEIC Aproved contractor. SafeContractor Approved. We are a team of highly skilled, well experienced and passionate professionals who puts your needs at the forefront of what we do. All our work is completed to the highest industry standards and compliance with regulations is always met.

Latest homeowner review
full starfull starfull starfull starfull star
Reviewed by dan on 15/11/2024

We hired Harry and his team for a full refurbishment of a dated property and couldn’t be happier. Harry managed everything, from the rip-out to electrics, kitchen, bathroom, and new central heating. Despite a tight deadline, they had it ready for decorating in just four weeks. They worked tirelessly to bring our vision to life, We’re thrilled with the results and grateful for their dedication. Highly recommend Harry and his team.

Hello everyone, I am civil engineering, I worked with different company in France and UK , I finally decided to create my own company COMFOROOMS LTD. I have long experience in building and groundwork . I am a serious person, I like my job, I respect my customers and I always tried to make them happy. I promise you a good job, nice and clean. You have my warranty for every job I will do. I am looking forward to hearing from you soon Thank you H.Turki Director

Latest homeowner review
full starfull starfull starfull starfull star
Reviewed by Sam on 28/3/2025

Hass from Comforooms had a tricky problem to investigate the cause of a leaky shower that had caused damage. It was more complicated than initially thought, but Hass pin-pointed the issues and explained what was required. He and his workmen were very skilled and tidy. Hass is extremely methodical and knows what he is doing. An excellent job, 5 out of 5. Will use again for sure.

We are a family run company which specializes in flat roofing, all chimney repairs Loose bricks, re-pointing work, roof repairs, lead work, leaking roofs, pitched roof's   Replacing Chimney Caps Repairing flat roofs etc  We have experience on private and commercial contracts, Learning avast experience in the roofing trade  there are very few problems we haven't come across before and would be happy to give you a free, no obligation quote for fixing any problems big or small.  We are fully insured for your peace of mind. We pride ourselves on our reputation. Most jobs we take before and after  photos so you can see exactly what we are doing We pride ourselves on customer satisfaction For a free no obligation quotation and advice please feel free to call. Kind regards,Andrey We can provide the following services: Flat roof repairs and replacement GRP fibreglass roofing  Firestone rubber roofing Guttering cleaned, repaired or replaced Ridges repointed  Fascia’s, soffits & guttering Exterior painting All roof repairs Pitched roofing Roof leaks  Repointing  New roofs  Moss removal  All Chimney repairs  Replacing broken tiles slates etc We are also skilled in services such as: Shed roofs re-felting guttering cleaning service. High pressure cleaning roofs walls, etc. All exterior maintenance Bricklaying Wall repairs  Cleaning facias and soffits Andrey ,free quotation

Latest homeowner review
full starfull starfull starfull starfull star
Reviewed by Sam on 28/3/2025

Andrey was prompt to quote and get started. We had a few jobs, for us Andrey completed some roof work, knocking down part of a wall and building new roof to fill in tiles to our existing roof. The job looks very smart and Andreys guys were happy to finish off exactly to my requirements. Site left nice and tidy. Highly recommended.

London Development uk ltd is our company, we have been trading for over 12 years in the construction business. - We are a fully insured company with a big portfolio of jobs completed and we are friendly and reliable on any work and business that is coming across. - We can do big jobs as new buildings or full refurbishments, basements, extensions, lofts conversions etc and also we can do small jobs as bathroom refurbishments or even smaller is always space and time for a new job. - We guarantee you that you will get the best workmanship on your job with best skills and acknowledge in the construction industry, time effective and costly effective for customers. Try our company and you will gain the benefits!!!

Latest homeowner review
full starfull starfull starfull starfull star
Reviewed by Rita on 25/12/2023

Peter contacted me and was amazing, professional with his quote and recommendation. Very clean, tidy service and very open and honest. Peter and his team are excellent builders.

We have 15 years of experience within the industry. We offer a wide range of services: Laminate Flooring Floor Tiling Door / Window painting External wall painting Internal Painting & Decorating Wall murals / Paint effects Wall Tiling We work hard and clean and make sure that our clients are happy.

Latest homeowner review
full starfull starfull starfull starfull star
Reviewed by Martin on 30/3/2025

London City Roofing & Renovations ltd is an established and trusted company with over 20 years experience, offering all aspects of roofing and building services. We are based in Wembley (London) serving all of London and surrounding areas within 100 miles.? We pride ourselves on our punctuality and quality workmanship, offering a prompt and professional service with experienced and expert staff. We guarantee a friendly, clean and tidy service with all work being to the highest standard. We are fully insured and all work is guaranteed. All our tradesmen are experienced and qualified in their respective trades. We specialise in the following: Roofing services: UPVC Fascias & Soffits Cladding Guttering Bargeboards Flat Roofing Chimney Repairs Tile & Slating Work Re-Roofs Lead Work General Building Work Fibre Glass Roofing Double Glazing Building services: Home improvements Kitchen Fitting Bathroom Fitting Extensions Loft Conversions Garage Conversions Bricklaying Plastering Comprehensive driveway and paving service, including: Driveways Drop Kerbs Patios Paths Block Paving Concreting Tarmacing Car Port We offer free quotes

Latest homeowner review
full starfull starfull starfull starfull star
Reviewed by Richard on 22/11/2024

John and the team did an outstanding job. It was easy to work with John and he was very knowledgeable, and provided very sensible advice. Other people quoted work which was over-the-top or wouldn't have solved the problem but John got right to the issue in a no-nonsense way. Quality of the work undertaken was very good, considering the age of the building and complexity. Would recommend.

WELCOME TO D.D BUILDING AND LANDSCAPING A small family team who can provide lots of services: PAINTING AND DECORATING TILING, FLOORING, PLASTERING RENDERING Astro Turf Block Paving Block Paving Driveways Brick Pavers Brick Wall Bricklaying Contractors Complete Design Concrete Driveways Construction Works Decking Driveway Repairs Driveways Fencing Full Garden Design Garden Buildings Garden Cleared Garden Fences Garden Landscaping Ideas Garden Lighting Garden Maintenance Garden Makeovers Garden Walling Garden Walls Garden clearance and tidy ups Gravel Driveways Ground Maintenance Hard Landscaping Home Extensions Home Improvement Landscaping Project Large Garden Natural Stone Patio New Driveways New Turf Outdoor Room Patio Design Patio Repairs Patios Paving Slabs Picket Fencing Property Maintenance Resin Bonded Driveway Resin Bound Driveways Retaining Walls Smaller Garden Turfing We specialise in all types of hard landscaping such as driveways, patio installations, garden walls, outdoor kitchen, ponds, artificial grass and much more. We also carry out soft landscaping, create planting schemes and offer a full Landscape Design service. Insurance work is undertaken, we have £1m public liability insurance and we accept all major credit cards.

Latest homeowner review
full starfull starfull starfull starfull star
Reviewed by Robert on 14/3/2025

Dorin's Team of Workers were fantastic, they worked so hard on my garden wall removal job and then new fencing. I highly recommend them.

We are at your disposal to help you with Leo pop construction property maintenance Ltd We arrange tiling works, gardens, paving and other interior paint?ing and exterior jobs .

At Sergola Ltd since 2017 as business running and 2010 as a self employed We specialize in transforming houses into dream homes. From complete kitchen and bathroom renovations to innovative loft & extensions, our skilled team excels in bringing your vision to life. With a focus on quality materials and meticulous workmanship, we ensure that every project exceeds expectations.

Latest homeowner review
full starfull starfull starfull starfull star
Reviewed by Ryan on 18/7/2024

Residential and commercial building contractor specialising in kitchens, bathrooms and full renovations. With over 12 years experience in the building industry our attention to detail is paramount.

Latest homeowner review
full starfull starfull starfull starfull star
Reviewed by David on 23/7/2024

Very quick, well priced and they did a great job. Thank you

Hi there My name is Filip Golisz and I'm a versatile tradesaman able to help with a whole range of jobs. If you are looking for someone who works to a high standard, I am the person for you. You can see positive ratings on my profile for a range of different types of job.

Latest homeowner review
full starfull starfull starfull starfull star
Reviewed by Martin on 21/3/2025

Filip did an excellent job on my garage door, removing all the rotten wood, rebuilding the frame and bottom of the door, painting and finishing in the same day. He charged a reasonable price, much more cost effective than a new door. Highly recommend.

Hi everyone , thanks checking my profile I’m Vas , have more than 10 years experience in construction I got level 3 diploma in carpentry, my main job is carpentry, but being in the industry so long I also can do handyman, fencing, ground work and foundation, decking, etc j

Latest homeowner review
full starfull starfull starfull starfull star
Reviewed by Emre on 15/4/2024

Brilliant workmanship , did exactly how we needed the shelves to be made. Highly recommended

S&D Construction Services is a premier general construction business with over of 23 years of Experience in the construction industry, we have established ourselves as a leader in delivering comprehensive construction services with a wide range of sectors including residential and commercial projects across London Our mission is to provide exceptional construction services and client-focused approach to every project we undertake

Latest homeowner review
full starfull starfull starfull starfull star
Reviewed by James on 31/3/2025

Fantastic job adding textured render around our newly fitted patio doors and on a blocked up old door. Was a particular finish we were looking for and the match was spot on. Highly recommended

We at Ins Construction & Landscape pride ourselves on delivering exceptional construction and landscaping services across London and Kent. Our dedicated team of professionals is committed to transforming your visions into reality with precision and quality, ensuring each project is completed to the highest standard. Discover how our expertise can enhance your home or commercial space, providing aesthetically pleasing and functional environments tailored to your unique needs. Our Expert Services: - Domestic Construction Our domestic construction services are designed to create the perfect living spaces for families in London and beyond. With a focus on contemporary design and sustainable building practices, we ensure each project reflects the unique style and needs of our clients while adhering to the highest quality standards. - Landscape Design Our landscape design services offer innovative solutions to transform your outdoor spaces into captivating environments. From lush gardens to functional outdoor living areas, our expert designers will bring your vision to life, combining creativity with practicality to enhance your property's appeal. - Commercial Projects At Ins Construction & Landscape, we specialise in handling complex commercial projects with precision and expertise. Our team is equipped to manage everything from office builds to retail fit-outs, ensuring minimal disruption to your business while delivering projects on time and within budget.

We are a local firm with over 50 years building experience, my son Gareth is a CICS Gold card Carpenter & my oldest son is a City & Guilds advance craft Bricklayer as am I. All of our staff are qualified in their respective trades. We build extensions, carry out house repair & maintenance work, patio and slabbing work, groundwork and excavations, General concreting work, drainage and much more. We fit new kitchens, stairs, doors and windows, all carpentry work undertaken. We have many passed clients who are happy for us to pass on their details as a reference for new clients to use.

Latest homeowner review
full starfull starfull starfull starfull star
Reviewed by Eamonn on 28/11/2024

Excellent communication and friendly team. On time, great work , on budget. No hesitation in recommending at all.

I represent a company with a strong and established presence in the market. Specializing in bathrooms, kitchens, and comprehensive renovations of real estate and apartments, we have 33 years of experience in delivering high-quality projects. In addition to renovations, we also offer services in loft conversions, new extensions, and other general building works. Our expertise and track record ensure that we can handle a wide range of construction needs with precision and excellence.

Latest homeowner review
full starfull starfull starfull starfull star
Reviewed by Andrew on 23/2/2025

Andrew excellent job removing an old bathroom and installing a new walk in shower & toilet. A good job well done quickly with plenty of updates

Post your job for free

app-icon

Get our app for homeowners

  • Send messages and get notifications from tradespeople
  • Add photos to get more accurate quotes
  • View tradespeople's profiles