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

JJ'S Landscapers

Cellar & Basement Conversion

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JJ's Landscapers is a reputable landscaping company that brings over a decade of valuable experience to homeowners. Our primary goal is to create and maintain breathtaking outdoor spaces that surpass our customers' expectations. We understand the importance of personalized service, which is why we prioritize our clients' visions and requirements above all else. Our dedicated team of professionals excels in a wide range of landscaping services, including lawn maintenance, garden design, irrigation systems, hardscaping, and more. By hiring JJ's Landscapers, homeowners can expect meticulous attention to detail, timely project completion, and an unwavering commitment to customer satisfaction. We take pride in transforming ordinary properties into stunning havens, enhancing curb appeal, and providing a tranquil environment for relaxation and enjoyment

CALTOM CONSTRUCTION LTD

Cellar & Basement Conversion

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Caltom Construction has 40 years experience in the construction industry.We specialise in reinforced concrete construction.Nationwide but usually in and around London. Thanks Colin Lavelle Caltom Construction limited

Legacy Renovation Group LTD

Cellar & Basement Conversion

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we are experience refurbishment contractors. we are reputable and reliable builders, established since 2010 and over 20years experience in building trade. using our skill and materials, we are eager to ensure that our customers are completely satisfied.

Latest homeowner review

Reviewed by Frances on 30/11/2025

Best tradesperson I've ever hired. Does the job right and really pays attention to the details. Can't recommend highly enough.

S Smith Building & Landscaping

Cellar & Basement Conversion

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At s.smith building and landscaping we are passionate about our work and bring the highest quality work

Erjo's Home Improvements

Cellar & Basement Conversion

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Founded on a legacy of craftmanship and dedication, Erjo's Home Improvements brings over 13 years experience to every project. Our expertise in roofing, home extensions, bathroom and kitchen renovations, and more, stems from a trade learned and perfected by our founder alongside his father. As a family business, we value the traditions of quality and integrity that have been passed down through generations. Our skilled team of four is united by a passion for delivering exceptional customer service, and transforming homes with precision and care. At Erjo's Home Improvements we treat your home as if it were our own, ensuring each project reflects our commitment to excellence and the personal touch that defines our family heritage.

artisan builders

Cellar & Basement Conversion

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Artisan Builders are a small company who have been trading for over 30 years around the Essex and Cambridgeshire area. We have a wealth of experience with a range of building works and trades. We aim to provide a friendly and professional service at all times.

Latest homeowner review

Reviewed by Lynda on 2/4/2014

First Class Company. We found Trevor and his people very courteous and friendly and they are most reliable.We are very satisfied with the work carried out.

DC LOFTS & CONSTRUCTION LTD

Cellar & Basement Conversion

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DC Lofts & Construction Ltd is a London-based construction company specialising in loft conversions, roofing, structural work, renovations, and full property improvements. We deliver reliable, high-quality workmanship with attention to detail from start to finish. Our services include new roof construction, structural alterations, loft conversions, partition walls, flooring, plastering, painting, doors, skirting, fascia, guttering, and exterior finishes. We work closely with homeowners to complete projects safely, professionally, and on time. We pride ourselves on clean work, strong communication, and practical solutions that add value to every property. Whether it’s a full loft build or general construction work, we focus on durability, quality finishes, and customer satisfaction.

SEAN WILSON & SON

Cellar & Basement Conversion

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We are builders based in co derry , we travel from county to country to work for the right clients , building relationships and long term partners ... Throughout the uk and ireland .. We have vast knowledge in house building groundworks ,underpinning ,renovations ,extentions ,complete refurbs ,medium size sites with the right investors .. Profile is in the making .. pictures references will be in coming weeks as new to this

H&R Renovations LTD

Cellar & Basement Conversion

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

Nikomar

Cellar & Basement Conversion

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Hi welcome to nikomar. We are a professional general builders . Our team are electricians plumbers tilers,carpenters painters etc. we are specialists on lofts conversions extension. And all interior refurbishing. We are working on this trade for more than 15 years.

Rivers & Building Services

Cellar & Basement Conversion

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My name is Dean. I am a good reputable builder. I am a bricklayer & roofer by trade. I am reasonable on price but we don't cut quality we only use the best materials.Being a general builder I offer all services , roofing, brickwork , groundwork, fencing

Latest homeowner review

Reviewed by Al on 11/7/2024

We are very pleased with the work that was done. There was a quick response to the job that day via a telephone call. An appointment was scheduled for a couple of days later and the work was started early that day & completed that same day. The workers were on time, polite, knowledgeable and proficient. They promised to make a visit a week later to remove the supportive structure and did exactly so yesterday. I am very pleased with the work and their professionalism.. i highly recommend them. Well dodone

Belgrade Ltd

Cellar & Basement Conversion

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With 20 years of experience in the construction industry, we have developed extensive knowledge and hands-on experience across a wide range of building projects. Belgrave Ltd take great pride in delivering high-quality workmanship, reliable service and excellent attention to detail. We believe in honest communication, professional standards and making sure every job is completed properly and to the customer’s expectations. Whether it’s a small job or a larger project, our aim is simple: provide a professional, reliable service and leave every customer completely satisfied with the finished result.

S&D Construction Services

Cellar & Basement Conversion

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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

Reviewed by Richard on 11/2/2026

Nicolae was great to work with, very accommodating, quick and unphased by bad weather. Did an excellent job with the blockwork at a good price and a good job with the plastering, which was little bit more expensive, but worth the assurance of having the same person do both jobs. Would recommend for similar, quick turnaround jobs.

ROMANS SCAFFOLDING

Cellar & Basement Conversion

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A Romans Scaffolding Ltd we provide our clients with the highest level of service with the best prices available Satisfaction is our aim!!! All size jobs undertaken , references and reviews to match :-)

Latest homeowner review

Reviewed by Terry on 7/6/2025

Outstanding service very competitive Prices . Punctual and turned up on the days they said . Recommend this firm to everyone .

ALPHATEC LTD

Cellar & Basement Conversion

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Hi, This is Alphatec ltd. We have specialised team to take all types of building jobs. We are specialised in Bathroom fitting, Plumbing , electric , new builds & renovations

Latest homeowner review

Reviewed by Katy on 10/6/2025

Inder did a very good job of upgrading our upstairs bathroom and installing a toilet downstairs. He worked tirelessly and was very punctual. Great on communication too!

First Choice Roofing & Damp Specialists

Cellar & Basement Conversion

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First Choice Roofing & Damp Specialist is a trusted roofing and damp proofing company dedicated to delivering high-quality workmanship and reliable solutions for homeowners and businesses. With years of experience in the industry, we specialise in all aspects of roofing, including roof repairs, new roof installations, flat roofs, chimney repairs, fascias, soffits, guttering, and emergency roofing services. We are also experts in damp proofing, condensation control, timber treatments, and property preservation, helping to protect homes from moisture damage and structural issues. At First Choice Roofing & Damp Specialist, we pride ourselves on honest advice, competitive pricing, and exceptional customer service. Every project is completed to the highest standards using quality materials, ensuring long-lasting results and complete customer satisfaction. Whether you need a minor roof repair, a complete roof replacement, or professional damp treatment, our experienced team is committed to providing dependable,

T C L Building & Landscaping

Cellar & Basement Conversion

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TCL Building and Landscapes, friendly professional service.

Latest homeowner review

Reviewed by Paul on 8/3/2024

Quick response and turn around

AJW Specialists

Cellar & Basement Conversion

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We are a diverse and efficient business covering all aspects of the building trade. Myself I studied at college as a bricklayer city guilds qualified. I can turn my hand to most jobs and look to offer a friendly and reliable service.