The quick way to find a local Cellar & Basement Conversion specialist in St. Helier

Ignite Developers

Cellar & Basement Conversion

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Ignite Developers has successfully developed and completed hundreds of residential and commercial projects in prime London locations for the last 10 years. With vast professional project management and contracting experience of developing our own projects that have added substantial value to our own property portfolio; we have grown to offer this service to private clients. We offer a complete in-house design and build service with a high level approach and focus on high end quality and handing over projects on time, every time. We project manage all projects so your requested task is hassle free each and every time. We cover a range of different trades including electrics and gas in addition to decorating, carpentry and extensions and loft conversions and much more.

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Reviewed by Oliver on 25/10/2025

Fantastic works done by the team who transformed our garden shed into a fully fitted out home office. Great communication with Nadeem throughout. Quick and efficient.

Beauchief Building and Electrical Services

Cellar & Basement Conversion

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We have been in business for over 20 years and pride ourselves in complete design and build, project management with good communication and an eye for customer satisfaction. We carry out works from New builds to lofts, extensions to refurbs with a specialist Bathroom operation which we carry out all year

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Reviewed by Paul on 29/8/2023

Julian at Beauchief was both professional in his approach and diligent in his work. Communication was very good both talking through the job / options and during, with regular photos updating progress. I would have no hesitation in using him again.

SAS RESOLVE LTD

Cellar & Basement Conversion

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GETTING YOUR PROPERTY REPAIRED IS OUR NO.1 PRIORITY. We are Concept Claims Solutions Buckinghamshire. An end to end project management service to return residential and commercial premises back to their pre-loss condition following our tried and tested processes and systems. With over 20 years of experience; Our system allows the complete cradle to grave management of both a property insurance claim and private renovation job from first notification through to settlement. As Principle Contractors, we undertake all aspects of property repair, rectification and renovation. SAS Resolve Ltd trading as Concept Claims Solutions (North Bucks) is an Appointed Representative of Citrus Compliance. Citrus Compliance is a trading name of Andrew Smith which is authorised and regulated by the Financial Conduct Authority. Concept Claim Solutions (North Bucks) is a franchise owned and operated under license, with a registered name of SAS Resolve Ltd. Registered Address: Jubilee House, East Beach, Lytham St.Annes, Lancashire, United Kingdom, FY8 5FT. Registered in England. Please note that photos are for illustration purposes only.

B.W Building Solutions

Cellar & Basement Conversion

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20+ years experience BW Building Solutions is built on a foundation of reputation, knowledge, and customer satisfaction. Specialists in Roofing, Loft Conversions, and Extensions, we cover all building needs, including Plastering  Joinery  Drainage Plumbing  Decking  Driveways and more..........

Aaron Construction

Cellar & Basement Conversion

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We guarantee that every service is delivered exactly as agreed, with reliability and attention to detail you can trust. We are a fully VAT-registered business.

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Reviewed by Joe on 5/4/2026

Christian

Cellar & Basement Conversion

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C C D General Building is a company designate to take care of your job from the quote job to the end of it

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Reviewed by Sajjad on 1/6/2020

Christian reversed the swing of the door for me in a room. He quoted quickly and his price was fair. He came quickly and did the job well. Would like to work with him in the future

SPECIALIST ESTABLISHMENT LTD

Cellar & Basement Conversion

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Welcome to Specialist Establishment LTD – Your Premier Construction and Renovation Partner in London. About Us: Specialist Establishment LTD, incorporated in August 2020, represents a fresh and dynamic approach to construction and renovation in London. Our team, rich in experience, combines over a century of expertise in the construction industry. This blend of youthful energy and seasoned skill positions us uniquely in the competitive London construction market. Our Services: Our range of services caters to various construction and renovation needs, including: * House Extensions, Loft Conversions & Home Improvements: We specialize in creatively and precisely expanding living spaces and transforming lofts into functional and stylish areas. * Bathroom Fitting & Tiling: Designing elegant and functional bathrooms tailored to your style. * Carpentry & Joinery: Expert carpenters bringing your bespoke kitchen and interior designs to life. * Electrical, Plumbing & Gas Services: Ensuring safe, efficient, and comprehensive installations and maintenance. * Painting, Decorating, & Plastering: Adding vibrancy and finesse to every space. * Roof Works: Comprehensive solutions for all roofing needs. * 3D Architectural Modelling for Major Projects: Reserved for our larger-scale projects, this innovative service allows detailed visualization of project plans before execution. Our Commitment: We pride ourselves on our versatility and our ability to deliver excellence in both small and large projects. Specialist Establishment LTD is committed to not just meeting, but exceeding client expectations. Operating Area: Serving within the M25 and North Kent areas, we are ready to bring our expertise to your project, no matter the size or complexity. Connect with Specialist Establishment LTD: For any queries or to discuss your next project, feel free to reach out. We are here to transform your vision into reality. Your Trusted Partner in Construction – Specialist Establishment LTD.

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Reviewed by Mikey on 25/3/2025

Michal and the team were great to deal with and extremely helpful. The usual array of unexpected issues cropped up during the project and Specialist Establishments were always ready to make appropriate adjustments to get the job done., with a minimum of fuss. We enjoyed working with them and would do so again.

Aspray South West Thames

Cellar & Basement Conversion

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Aspray South West Thames manage property damage insurance claims. We act on behalf of the policyholder, negotiation the claim with the insurance company, then project manage the reinstatement works from start to finish. Aspray (South West Thames) is a trading name of G. D Property Services Ltd and is an Appointed Representative of Aspray Limited who are authorised and regulated by the Financial Conduct Authority for claims handling only.

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Reviewed by Nathaniel on 4/4/2018

Job done professionally and in a timely manner. Excellent Service.

Jia Zhang

Cellar & Basement Conversion

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I have been working in the UK for over 10 years, specialising in home decoration and home renovation, kitchen and bathroom renovation, painting and paving, carpentry, and plumbing. Familiar with the structure of UK houses, meticulous and reliable work, real and reliable prices, never deceiving or cheating, and providing warranty services after completion. Friends with decoration needs can contact at any time

RAILEM BUILDING CONSTRUCTION LTD

Cellar & Basement Conversion

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Railem Building Construction With over 15 years of experience, Railem Building Construction specialises in house extensions and private residential projects. We work closely with homeowners to deliver high-quality results, from planning to completion. Our specialities include house extensions, plastering, rendering, tiling, drylining, partitions, MF ceilings, and full property renovations. We also provide electrical and plumbing works, offering a complete, hassle-free service for private clients. Our team is fully trained and highly experienced, with a strong background gained from both private residential projects and large commercial developments, including stadiums and apartment blocks. This experience allows us to bring professional standards, attention to detail, and reliable workmanship to every home we work on. We pride ourselves on quality, clear communication, and completing projects on time and within budget.

Mill House LTD

Cellar & Basement Conversion

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Honesty, good workmanship , 40 years as a contractor, helpful, nothing is too big or too small, no over pricing, London based. Knowledge of all property aspects, including laws and management, politeness and total respect to our clients, and their properties You will not be disappointed

FKF Construction Services Ltd

Cellar & Basement Conversion

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We are a trusted construction company based in West London, delivering high-quality residential and commercial building services. With a strong focus on craftsmanship, reliability, and clear communication, we take pride in completing every project to the highest standard—on time and within budget. Customer satisfaction is at the heart of everything we do. We specialise in renovations, extensions, and full property refurbishments, always working closely with our clients to bring their vision to life with quality results and honest service.

Callisto

Cellar & Basement Conversion

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Callisto Construction, established in 2001, are run by a team of building experts with over 60 years of experience and are based in Sutton-At-Hone at the end of the Darenth Valley. We Design & Build and can take your project from an idea through planning to completion. From small extensions, refurbishment & structural alterations to full new builds, large or small and with full accreditation with various industry bodies such as The Federation of Master Builders, we give you peace of mind, knowing that your Build is in safe hands! We value and pride ourselves on our reputation and look to partner with our clients to give them the most positive experience possible when embarking on what is often a clients most valued and important asset, their home! We offer simple design advice such as space planning, Kitchen & Bathrooms design & renewable energy solutions to Full Planning, Structural Engineers and our own Architects. Callisto are fully insured, trading standards approved and offer a suite of Build Assure warranty products for the domestic and commercial markets. If you are interested in discussing your build please contact us We do hope that you get in touch! Kind Regards, Bram Martin (Director)

Mamaar Construction

Cellar & Basement Conversion

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MEMAAR Construction is a business specializing in refurbishment, renovation, extension, painting, flooring, decoration, tiling, and demolition services. With a commitment to quality craftsmanship and a customer-centric approach, MEMAAR emphasises personalised service and priorities client needs. The business is supported by an expert team in the construction industry and aims to use sustainable practices while offering affordable pricing without compromising quality.

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Reviewed by Waiz on 23/10/2025

Plum Building Services LTD

Cellar & Basement Conversion

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Plum Building Services Ltd is a building company based in London. We work for both landlords and private home owners on new builds, extensions, refurbishments, repair and maintenance. No job is too big or too small. Quality is our guarantee.

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Reviewed by Philippa on 28/10/2025

Rated People

Cellar & Basement Conversion

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Loft conversion specialist, with 25 years worth of experience.

CRE8TIVE CONTRACTORS LIMITED

Cellar & Basement Conversion

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CRE8TIVE Contractors Limited is a proud member of the federation of master builders and TrustMark. We are a complete building service covering all aspects of building trade from footings to finishings. We thrive on our quality and attention to detail. From bathroom/kitchen renovations to full extensions and loft conversions.

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Reviewed by Ariane on 8/9/2022

Eric, Tony and Paul were excellent builders. Very hard working, super respectful and reliable. They were able to start quickly and worked hard to get it done within 2 weeks. I would highly recommend them! It was refreshing to work with professionals like that!