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

Cooper & Son

Cellar & Basement Conversion

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EST 1983 Family run business 4th generation https://www.cooperandsonroofing.co.uk Here at Cooper & Sons roofing we like to give our customers full confidence in are services, all of are work comes with warranty from 1year to 25years. we take pride in all of are work, each person in are team has gone through the correct training to receive the highest qualification on each task needed. Please look at some of our 5* reviews from are happy customers.

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Reviewed by Iain on 14/4/2026

Coopers provided an excellent service. Jack came and reviewed the problem, showing me photos of the leak and damage, and gave various options and prices of what I could do. In the end, I decided on a full roof replacement along with guttering and soffits. I got them to fit a Velux window and sun tunnel too. The project management was excellent. Scaffolding came within a day and work started following Monday. The job was completed in four days to a professional standard. Highly recommended.

AGC Electrical

Cellar & Basement Conversion

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AGC Electrical is a small and friendly company with an emphasis on customer satisfaction. Our pricing is reasonable and we aim to provide the best overall experience to all our customers.

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Reviewed by rachel on 11/2/2025

Good communication and was on time. Job was done well.

22 G Construction

Cellar & Basement Conversion

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I am a multipurpose builder/handyman that can complete most jobs around the house 22G Construction is a well established Multi-trade company that has built up an enviable reputation over 10 years. I am diligent, pay attention to detail and complete work to a high standard. I provide solutions based ideas and am very approachable. I have an excellent knowledge on Electrics and Plumbing. I also install CCTV systems. I repair/ install new fixtures and fittings that includes Flat Pack Furniture assembly, Blind installation, TV installation to mention a few. Plus much more Instagram@22gconstruction Facebook@

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Reviewed by Lee on 26/10/2020

Great team and work. All work was completed with each phase being completed as described. Clean, tidy and professional keeping disturbance to the neighbours down to the minimum. Will be using these guys again for my next project.

Castle Wren

Cellar & Basement Conversion

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Castle Wren are a progressive and versatile construction business. Operating from the heart of Bishops Stortford on the Herts and Essex border, we work across the Home Counties, London and East Anglia. We continually strive to maintain our strong reputation for quality, and we have long standing partnerships with many of our clients with much of our work being repeat business. Our experienced and dedicated team cover all types of projects ranging from demolition and site clearance to new build housing schemes, commercial buildings or refurbishment projects. Private clients are an important part of our business, and we work with customers to bring their dreams to life, be that with a new extension, landscaping and garden transformations, patios and driveways or the end to end delivery of a new home. We have deep specialisms in demolition, groundworks, earthworks, and civil engineering projects and work with a wide range of clients, from private customers to national developers and housebuilders.

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Reviewed by Alan on 2/5/2024

After visiting my property, I was initially impressed by the gentleman who promised to quote, but have since heard nothing, in spite of more than one request to get back to me. Very disappointed

Sparkle Spray

Cellar & Basement Conversion

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Sparkle spray Jet Washing – Professional Exterior Cleaning Services We are your local expert jet washing and pressure cleaning specialists, serving kent and surrounding areas. Whether you need your driveway, patio, paths, decking, walls, fences, or exterior building surfaces cleaned — we have the right equipment and experience to get the job done perfectly. We use high-powered, professional jet wash systems that safely remove dirt, moss, algae, oil stains, grime, and weathering, restoring your surfaces to their original clean, bright condition. We treat every property with care, use safe cleaning methods, and leave your property spotless when we finish. ✅ Driveway & patio cleaning & sealing ✅ Paths, steps & paving ✅ Decking & fencing cleaning ✅ Brickwork, walls & render cleaning ✅ Oil stain removal ✅ Fully insured | Reliable | Local | Free quotes Our promise: We don’t just wash — we make it shine.

FUTURE ZONE CONSTRCUTION LTD

Cellar & Basement Conversion

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Under the name, Future Zone Construction LTD there is a vast experience of work. Project management, site management, extension and turnkey jobs. We are capable of large interiors, exteriors, maintenance and turnkey finishes. I pride myself on doing high-quality work and keeping customers happy at an affordable price.

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,

Crestline Builders Ltd

Cellar & Basement Conversion

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As a committed and multifaceted professional, my journey has spanned both the vibrant world of hospitality and the demanding field of construction, enriched by my academic progression from a BSc Level 5 towards a Level 6 qualification. My career began amidst the buzz of a Michelin-starred eatery, where I quickly mastered the art of stellar customer service and seamless teamwork, evolving from an eager Commis Waiter to a proficient Waiter. With the onset of the COVID-19 pandemic, I pivoted to the construction realm, starting as a General Labourer. My dedication to growth led me to acquire essential certifications like SSSTS, NVQ Level 2, and First Aid Level 3, paving my path to becoming a Drylining Fixer. Presently, I apply my broad skill set as a Maintenance Handyman, focusing on the meticulous care and repair of properties to uphold their functionality and appeal. Renowned for my relentless work ethic, flexible nature, and meticulous attention to detail, I thrive in settings that demand ingenious problem-solving and clear communication.

PRIME UK CONTRACTORS LTD

Cellar & Basement Conversion

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WHAT WE OFFER BUILDING SERVICES Prime UK Contractors is a London-based construction company providing high quality work for a reasonable price. Our projects are always finished on time. Our priority is the satisfaction of our clients. Our team consists of skilled, experienced builders who will help you execute your dream project. Services we offer: Loft Conversions House Extensions Complete Remodelling Kitchen Remodelling Bathroom Remodelling Plastering Cladding Home Interior Carpentry Decorating Drylining and Plastering Steel Frame Systems Dry Lining

Tekton Build LTD

Cellar & Basement Conversion

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We are a well established Building company with over 20 years experience in the building trade. We build everything from New Homes, extensions, alterations and renovations.

Quinn

Cellar & Basement Conversion

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Quinn construction Ltd general building works, specialize in Knockthrough, garage conversions and chimney breast and stack removal

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Reviewed by Srinivas on 18/11/2025

Highly recommend Ben for plumbing and rendering work! He did a fantastic job — everything was completed to a high standard, on time, and within budget. Very honest, easy to communicate with, and offered practical solutions without upselling. His pricing was fair and transparent, and the quality of work speaks for itself. It’s rare to find someone so reliable and skilled these days — will definitely be using him again!

CANI BUILDING SERVICES LTD

Cellar & Basement Conversion

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We have been working at this trade for over 15 years. My company and works people hold a number of different NVQ qualifications such as electrical, engineering, railway engineer, civil engineering. We take customer service very seriously and we ensure to reply as soon as possible when someone contacts us. We also ensure we give a fair deal for a great service in return.

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Reviewed by Sean on 2/4/2025

We hired Cani Building Services to replace the front stairs and pathway of our Victorian home with granite pavers in the spring of 2025. When evaluating the builders it was important to us that we found somebody who was professional, reliable, and detail-oriented. Durim offered a competitive quote and promptly started work. ?He completed our job to a high level of quality within a week’s time, and we are very pleased with the outcome. We would absolutely recommend his services to others!

Nicusor Botezatu

Cellar & Basement Conversion

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A specialist in tiles, with 10 years experience in Italy and UK. Background (family business) and UK qualification in Carpentry. Expert in interiors (painting, tiles, plaster, dry lining fixer, etc.) and exteriors (driveway paving, screed, coating, etc.) renovation.

MW Building Solutions

Cellar & Basement Conversion

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I have 15 years of hands-on experience and knowledge of all aspects of property maintenance and building projects and associated trades. I pride myself on high standards and excellent quality of work, honesty, and reliability. Project management can be offered to elevate the stresses of larger projects, and value and service are paramount. All building services can be provided by our company. On request, i am able to provide credible references from previous and existing clients . When you hire our services, you can count on us for the results you want and need. Get in touch today, and discover the advantage of working with MW Building Solutions.

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Reviewed by Ian on 8/1/2025

Mariusz came to give us a quote for complete strip out and refit of small bathroom. We already had an idea of how the new bathroom should look and had chosen almost all the new fittings, etc. Mariusz suggested a completely new layout, which we would never have thought of and many different fittings. We decided to go with Mariusz's layout and many of his suggestions for the fittings. The finished bathroom is absolutely outstanding and beyond our expectations. Mariusz is truly a master craftsman.

MASTER

Cellar & Basement Conversion

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We are a period/listed property restoration company. We specialise in traditional materials and methods. Often our work is to Identity and rectify damp issues which arise from the use of modern materials on period properties where breathable materials are imperative for the buildings features and characteristics to function. Once the breathability of the property is compromised damp issues will occur. We offer damp assessments for your property with a full report to guide you in the right direction eradicating current and future damp issues. Our assessments cost: £140 including guidance and a full report which details the source(s) of the damp & mould, how to eradicate the issues. - Lime rendering & plastering with horse hair. - Lime pointing. - Masonry repairs. - Paint removal using the Thermatech hot steam cleaning system. - Brick/stone feature walls. - lime wash - Breathable Painting. - lime plaster/render We often work with conservation officers from the authorities to ensure our works are of the highest standards.

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Reviewed by Alexandra on 10/5/2025

Marcus and his team did a great job for us reseating our period porch stone paving and repointing with lime mortar, including matching a reclaimed stone slab to replace a broken one

T C L Building & Landscaping

Cellar & Basement Conversion

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TCL Building and Landscapes, friendly professional service.

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Reviewed by Paul on 8/3/2024

Quick response and turn around

jabrickwork

Cellar & Basement Conversion

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hello, we are a small building service . clean tidy friendly tradesmen specializing in small building projects. high standard of quality assured. city n guilds time served tradesmen. Certificates in lime mortar repointing heritage

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Reviewed by Derek on 5/7/2025

Jay assessed the job in person and gave me a fair quote on the spot. He’s just done the job on a Saturday and it looks great!

PG Build

Cellar & Basement Conversion

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PG Build offers a diverse array of specialist building services designed to enhance your educational, commercial, or residential projects. Our offerings range from bespoke Playground Specialist Services and comprehensive Renovations & Remodelling to cutting-edge CCTV & Networking solutions, ensuring exceptional quality in every facet. Our expertise also includes Resin Bound Paving, Play Equipment Installation, and innovative Custom Projects. Additionally, we are proficient in Wet Pour Safety Surfacing, Landscaping, Automated Access Solutions, and reliable Maintenance Services. For those seeking distinctive solutions, explore our Custom Container Buildings. Choose PG Build for a partnership dedicated to realising your vision with unmatched precision and excellence.

Urbanfix

Cellar & Basement Conversion

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I am a highly skilled carpenter and handyman with several years of experience. My expertise enables me to handle both indoor and outdoor carpentry tasks to a high standard. Additionally, I enjoy the challenge of creating bespoke projects tailored to clients' needs, whether for residential or commercial spaces.

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Reviewed by Craig on 9/4/2026