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

SMP Plastering Services

Cellar & Basement Conversion

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SMP plastering services with over 30 years in the trade.

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Reviewed by Paula on 12/2/2026

DWJ & Son Construction and Landscaping

Cellar & Basement Conversion

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Here at dwj and son construction and landscaping we offer top quality work and reasonable rates. We Family run business with 20 years experience.

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Reviewed by David on 16/1/2026

Apex Construction

Cellar & Basement Conversion

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Extensions · Renovations & Refurbishments · New Builds · Annexes · Groundworks & Landscaping Apex Construction Construction is a professional residential construction company based in Portsmouth , delivering well‑managed building projects across South West and West Surrey, Hampshire and West Sussex. ​ We work with homeowners who value clarity, proper planning and a proactive approach - people who want their project handled professionally, without constant involvement or uncertainty. Many of our projects are secured through direct appointment via word of mouth and repeat clients, reflecting the level of trust, accountability and continuity our clients expect. ​ Our approach is best suited to clients who value quality, organised delivery and the confidence of knowing their project is in safe hands. Our pricing is fair and competitive for the level of workmanship, management and service we provide, with a focus on delivering long‑term value rather than headline cost. ​ As well as taking responsibility for managing the build, we work collaboratively with our clients to ensure key decisions are clear, expectations are aligned and the finished result reflects what matters most to them. ​ While some projects are larger in scope, we also work on smaller, well‑considered projects for clients who value professionalism, sensible pricing and a hassle‑free delivery. Projects are clearly defined, properly planned and delivered in full, with many clients choosing to continue working with us on subsequent projects once trust and understanding are established.

ASW BUILDER

Cellar & Basement Conversion

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I have been doing building work now for the last 15 years I cover all types of building work to extensions, alterations conservatories, Landscapeing renovation, Plastering I enjoy doing different types of projects including the awkward stuff if your interested in any work being done please let me know I am happy to take a look and talk you through the jobs and different ideas Many thanks Andrew wall Asw Builder

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Reviewed by Alex on 1/1/2026

Excellent build quality, transparency and communication.

London Underpinning

Cellar & Basement Conversion

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We specialise in structural works, underpinning, steelwork and basements. Our experienced team are also experts in damp control, waterproofing and tanking solutions and all our work is guaranteed, offering our clients complete peace of mind.

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Reviewed by Lisa on 9/3/2023

We had a retaining wall fixed in our basement. Kevin was great at communicating and helpful with the issues we had. The team working were great, polite, and kept the place clean and tidy each day. Very reliable. Thanks!

Butler Group

Cellar & Basement Conversion

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We are a family run construction and landscaping company with a combined 30 plus years experience ..

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Reviewed by Amanda on 14/4/2021

Tom and his colleagues did a very professional job, supplying and laying a crazy paving area in our garden. They were very efficient and pleasant to deal with, and I would have no hesitation in recommending them.

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.

BM Promanage Ltd

Cellar & Basement Conversion

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BM Pro Manage is a premium building company specializing in high-quality view extensions to expand properties, loft conversions, and luxury bathrooms and kitchens. The company is dedicated to delivering exceptional craftsmanship, innovative designs, and bespoke solutions tailored to each client’s needs. With a strong focus on quality, aesthetics, and functionality, BM Pro Manage transforms living spaces to enhance both comfort and value.

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Reviewed by John on 22/5/2025

I feel fortunate to have found Bartek and his band of builders. They have done some excellent work for me, very tidily and well done, and the price was fair. I recommend him without reservation. He is helpful, gives good advice, and always looks for the most economical solution without cutting corners. I give him five stars without hesitation.

Kubel LTD

Cellar & Basement Conversion

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Our company KUBEL LTD has a team of specialist with more than ten years of experience in the field of construction, reconstruction of houses, roofs, extensions, gardens... Please, see pictures of our works below.

M R Roofing

Cellar & Basement Conversion

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With over 16 years of experience, M R Roofing can help with all aspects of roofing. Competitively priced and trusted professionals that will carry out all roofing work to the highest standard and in efficient time. M R Roofing is committed to providing you with not only the best workmanship, but high standard roofing materials for your home. We work hand in hand with clients and make sure you are up to date with all progress at all times. Our work is always efficient and finished to the highest standard and we pride ourselves on making sure we keep to deadlines and finish all roofing work within the promised times as agreed with the client. From new re-roofs to roof repairs or flat roofs we cover all aspects of roofing services. Our top priority is fast and efficient workmanship.

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Reviewed by Carol on 27/6/2023

Really pleased with the job. Mark is a very nice man. The work was done to a very high standard.

multitrade building ltd

Cellar & Basement Conversion

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?Multitrade Building LTD is a building company created to make a change, make that house new and give you the room and the refurbishment you've always wanted.

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Reviewed by armin on 2/2/2023

Very good service, would use Viorel again!

Tizard Construction

Cellar & Basement Conversion

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Thanks for visiting our page. You can see an archive of photos on this page and if you would like more photos of any specific type of job please ask. We are happy to tackle big jobs or small and strive on customer satisfaction and repeat custom. Thanks

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Reviewed by Mark on 1/8/2019

Lee and Chloe were fantastic. They built a decking area for us which has transformed the garden. The quality of their work is excellent and their work ethic is superb. They offered great advice and ideas, which often saved us money. I would have no hesitation in recommending Lee and Chloe, lovely people, excellent quality work and great value.

ANAMERA Group Limited

Cellar & Basement Conversion

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Anamera Group specialises in complete home renovation to a very high standard in all aspects of work . Structural alternations, Open plan projects, Conversions, Construction, Refurbishment, Renovation, Restoration, Extension. We are based in Hampshire and cover all over the Hampshire area including london. Written quotes will be given .

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Reviewed by Andy on 18/5/2023

I was very impressed with Krystian, prompt contact after enquiry, was the only tradesman to actually listen to what I needed and produced a quote which met my needs fully. His price was fair and consistent, perhaps not the cheapest but I didn’t necessarily need the cheapest, I wanted the best value with quality and trust. He completed one bathroom within a month of instructing, to a high standard and we were delighted. This gave me full confidence to let the second bathroom which again was superb

OCG Property & landscaping Services

Cellar & Basement Conversion

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Ocg Property and Landscaping services offer a wide range of services for all of your property needs. From landscaping and garden design to driveways, roofing repairs and garden clearance. Private and commercial, one off and regular maintenance.

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Reviewed by mark on 21/1/2021

Excellent service would recommend

GLADIATOR PROPERTY SERVICES

Cellar & Basement Conversion

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Although new to rated people, we are a fully insured, reliable company based in West Sussex with over 20 years of experience. We provide a wide range of services within domestic, commercial and industrial premises.

Silverwing Renovations

Cellar & Basement Conversion

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At Silverwing Renovations, we take pride in delivering high-quality workmanship with a reliable and professional service from start to finish. We specialise in a wide range of home improvement and renovation projects, including kitchens, bathrooms, general building work, and property refurbishments. With a strong focus on attention to detail and customer satisfaction, we work closely with every client to ensure their vision is brought to life—on time and within budget. Whether it’s a small upgrade or a full renovation, we approach every job with the same level of care and commitment. We are punctual, tidy, and transparent in our communication, keeping you informed at every stage of the project. Our goal is simple: to provide a stress-free experience and results you’ll be proud of. Choose Silverwing Renovations for dependable service, quality craftsmanship, and a finish that lasts.

The Boar Projects

Cellar & Basement Conversion

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Welcome to our Rated People site. We are qualified team of specialists and general building contractors with over 15 years of experience in all aspects of renovation including extensions, conversions, roofs, bathrooms & kitchens makeovers,

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Reviewed by Tim on 25/1/2018

MBC have been unprofessional due to their unreliability, failing to complete the work and taking 4 months to do a job which was estimated to take 10 days. Whilst removing a bathroom the ceiling collapsed, they ruptured a water pipe damaging new kitchen although it was repaired.They have failed to replace the new sink which they cracked, left spotlights unfinished in bedroom, loft access and fireplace hearth unfinished. Martin has apparently been a project manager but his time management is appalling.

SPARKS FABRICATION LTD

Cellar & Basement Conversion

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Welcome to Sparks fabrication where we combine over 15 years of industry expertise with a commitment to exceptional customer service. We provide free quotations, ensuring transparency and informed decision-making for all projects. Our focus on reliability, trustworthiness, and quality of work sets us apart, with references available to attest to our dedication. Specializing in grills, gates, railings, bespoke furniture, staircases, mezzanine floors, and more, we pride ourselves on bringing your vision to life. Contact us today to experience craftsmanship and service of the highest standard.

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Reviewed by Nicholas on 11/4/2024

Reliable and excellent work.

S&C Cleaning Services

Cellar & Basement Conversion

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We are House Maintenance Company Registered with company house, we do everything the right way, we comply with rules and regulations by the government as well as contracted jobs, any transactions will be with the office, our staff only carry out the jobs thanks. Woman with a Van. our Instagram page sandc_cleaning_services VAT registered Gallery pictures please have a look. We specialise in Oven clean, Carpet clean Stairs carpet clean, Tiles clean, Sofa clean, Hard flooring cleaning Stain removal cleaning , Bathroom , End of tenancy & home clean. All Essential domestic cleaning Waste Removals House Move collection Kitchen demolishment Handyman Gardening.

Latest homeowner review

Reviewed by Wesley on 16/4/2026

Fantastic service and affordable price. I highly recommend.