Your home should reflect your vision and enhance your lifestyle. With over 25 years of experience in property development, we work closely with you to create spaces that go beyond bricks and mortar, transforming them into your dream home.
Our passion for thoughtful design and quality craftsmanship can be seen across Sheffield. We specialise in revitalising properties with a deep respect for their history while adapting them to modern needs. We’re not just property developers – we’re here to help you bring your ideal living space to life.

Transform your property with a bespoke extension designed to enhance both space and style. We create luxury extensions tailored to your unique vision and reflecting your personal taste. Whether you’re looking to expand or elevate, we’ll help bring the perfect space to your home without the hassle of moving.
Looking to expand your living space and value to your home? A loft conversion is a cost-effective way to transform unused space into a functional, stylish area for your family.
Whether you’re looking for a new bedroom, office, or living space, our expert team can advise you on enhancing your existing structure to create the perfect home.

"Dear James I just wanted to thank you and your team for a great job carried out on my property. I felt that your quote was fair and that I was kept up to date with proceedings and felt included in decisions to be made during the project. I also felt that your team were timely, polite and clean, taking care to clean up after themselves. I particularly liked the fact that you managed the project bringing in tradesmen when required to ensure minimal wasted time and that you finished on time and in budget. Thankyou for a job well done and I wish you the best for you and your team. Jamie Denholm"
JAMIE DENHOLM – TOTLEY, S17
"When we first thought about having the house extension built, I expected to be fulfilling the role of project manager, organising the trades and resources etc. But when the quote came in from SDP, which included James’ performing that task, it seemed a much more sensible idea to leave it to him given the differences in our relative experiences of the building trade (I had none). James did as he’d promised and turned up almost every day he had workmen here, making sure they were doing what they were expected to and that they had the resources they needed. He also kept us well informed about what to expect next. He’d provided a complete plan and timescale (which was perhaps a bit ambitious) at the start, and as is the case with many builds, things sometimes happened beyond our control that impacted the completion date. But James was always happy, willing and able to work around the delays, revising and rescheduling as required. Throughout the whole build James and his team have always been friendly, honest and polite, and have often contributed ideas and suggestions for making the build better, more professional and more effective. Now the build is finished, we’re delighted, as we have a new kitchen, garage and workshop that get’s a ‘Wow!’ from everyone who sees them. We are happy to recommend SDP and would have no hesitation in using them again."
ANDY TIMMONS – SOUTHALL, S20
We engaged SDP to build a single storey kitchen/dining extension which they completed in April 2017. The project was managed very effectively by James and the team, to ensure completion within projected timescales, to budget and without any compromise on quality. Without exception we were impressed with the competence of all the tradespeople engaged on the build and their helpful approach to resolving any issues which arose. We are very pleased with the finished product and wouldn't hesitate to recommend SDP.
David Howarth – Bents Green, S11
"After hearing good things, I contracted James and his team to do some considerable refurbishment work on one of my student terrace houses. The property needed a full loft conversion, a refurb of the main bathroom, bedroom, and dining room, and a totally new kitchen. Not only that – but with it being a student property we only had the small window of the summer holidays to get everything looking tip top again in time for the new academic year. It was a tall order but the job was completed to highest standard and with complete efficiency from the whole team at SDP. I couldn’t be happier with the work. Everything was completed on schedule, and with total transparency from James about where we were at, at every stage. Because of the terms and conditions drawn up in advance, I knew the exact schedule of works. Payment was spread across the duration of the project and there were no hidden costs. SDP also sourced the kitchen themselves, using my specifications – which was a massive weight off my shoulders. The team were always punctual and polite. All in all, I couldn’t recommend them highly enough."
TONY DOUBLEDAY – HILLSBOROUGH, S6
We decided that as we were getting older a downstairs toilet would be beneficial. This would be built in the rear of our integral garage. With the front of the garage being extended, with new roof, to allow the continued garaging of our car. Getting planning permission took about 7 weeks. I felt that at least 3 quotations would be required. I had listed our requirements as detailed as possible and identified 3 builders, two local and the third, SDP, I found from a web search. Although SDP were not the lowest quote, we both felt that the way James, the Managing Director dealt with us, was impressive. We went to SDP office to discuss and sign the contract. I had thought of a few queries and tweaks which James accommodated without issue. He also advised us of suppliers they used, for us to choose some of the fitments etc. We were advised of a probable start date and probable duration of the work. Although there was some slippage it did not affect us. The basic building work was done by the team of Ian and his mate Richard. James was on site early most mornings, checking progress and ordering the materials as required. I had not really fully anticipated the level of work required, with lots of sand, bricks, aggregate, timber, and two skips etc. The weather was not always good but it never stopped Ian and Richard, although they were very wet on occasions. Cups of tea seemed to work wonders. James was open to my suggestions and queries although he did suggest on one occasion that I had ‘too much time to think’! Anyway most were accommodated where possible. All the tradesmen were also very professional and competent. Tidying up as they went along. Overall we were happy with the work; in particular the way Ian built false doors to the garage extension for security and in our hallway which really kept dust and disturbance to a minimum. He also built replacement shelves to the rear of the garage. Pricewise I was a little concerned, due to my suggestions and tweaks but it came in ‘on quote’ apart from a couple of items which we asked to be changed. James certainly seems to keep his several active projects, small and large, going with very little impact on ours. We would thoroughly recommend DPS and wish James and his team best wishes for the future.
Mary and John Wilde
We love our new kitchen extension. It is exactly what we wanted. SDP listened to exactly what we were after and did a fantastic job. Everyone who worked on it was very friendly and polite and worked to high standards. I would definitely recommend them.
Emma Wilkinson – Crookes, S10
We had a fantastic experience with SDP. James and his team knocked through our lounge and kitchen last year, this involved obtaining structural engineer's calculations, knocking through the brickwork, putting in steel support then arranging building regulation sign off. This was finished by 'making good' including plumbing a new radiator, re tiling the floor and re plastering. The work was carried out to the highest standard and from start to finish the process was smooth. What really impressed me was how specific James and his team were with the timeline of events and when they would occur so we could adequately plan ahead and his team are really friendly. We are already planning on using SDP again when we extend our kitchen later this year. I cannot recommend them highly enough!
Michael Parry – Dore
"I purchased my house at Beauchief from james six months ago. James showed me the property when it was partly renovated and I fell in love with it. He has sympathetically renovated the house keeping all the lovely features. All the bathroom and kitchen fittings are of a very high standard and since moving in I have not had any problems. I am over the moon with the house and would not hesitate to buy from James again and indeed a couple of my friends are interested in purchasing off him. Thanks, Philippa."
PHILIPPA DIGNAM – BEAUCHIEF, S8
"We’ve used SDP twice now, and both times we’ve been delighted with the results. The staff are friendly, polite, and most importantly, they deliver an excellent standard of work. We HIGHLY recommend them. Joe and Kayti Ball"
JOE & KAYTI BALL – NORTON, S8
"I needed some basement work completed as it was determined that after a surveyor had looked at it, there would need to be a full rebuild of the wall. The guys who came round were friendly, hard working and did an excellent job. They tidied the place up nicely after the work had been completed. Extremely happy with the cost for doing it and would not hesitate to ask for future work to be completed by Sheffield Development Properties."
JOHN DANIELS – MILLHOUSES, S7
"We found Sheffield Properties Development efficient, effective and value for money. James kept us informed of who was coming and when. He also solved any problems that occurred there and then. We didn’t have to wait long for answers or solutions. His teams did a good job and were reliable, personable and hard working. Our new extension is a delight and it’s almost impossible to tell that it is new brickwork from the front of the bungalow. We are planning to do our kitchen next year and will be using this firm again. Regards Christine"
CHRISTINE FERRIS – TODWICK, S26
"We contacted James after a recommendation from someone who had used SDP previously. We were looking to replace our kitchen and create some extra space via the removal of some adjoining walls. James and Steve were extremely helpful in terms of proposing different options, whilst always looking to meet our requirements. The final layout has meant much more than just a new kitchen. We feel like the rear of the house has been completely revamped, giving us a more airy, spacious, functional and modern kitchen / dining / entertaining space. Having also added some additional work to our roofed conservatory (underfloor heating, bi-fold doors and seamless flooring), like many of the other testimonials on this site, we too are receiving lots of ‘wows’ from visitors. A small extension to the front doorway was also carried out by SDP – this was also done to a high standard and has left us with a far more practical space. We would certainly recommend James and his team – who were all extremely helpful and friendly. As our children grow up and we seek some additional refuge, I’m sure we will be back in touch re a loft conversion !!"
NATALIE & ADAM – SHEFFIELD, S20
"I selected SDP to undertake a redevelopment and extension of the rear of the ground floor of my 100 year old semi because James approached the project in a very professional manner, explaining that he supplied a price, not an estimate, he gave a timescale and guaranteed daily visits to my house to project manage the work. There were inevitable little hiccups but nothing that James and I could not discuss and sort out. It was most helpful that James was always on hand so that queries could swiftly be dealt with. Together we could talk through tweaks to the plans. James employs a team of very polite, considerate and caring workers who always treated the house as my home, not as a ‘building site’. As well as this team James also hires in skilled artisans which has resulted in a completed open-plan family room/kitchen/dining room along with a loo and utility room that exceeds my original hopes and plans. I can highly recommend James and his team to anyone considering renovation work, large or small."
ANGELA ANWYL – TOTLEY, S17
"We have recently moved house and decided to knock through a couple of walls to make a larger kitchen diner. Initially we contacted about 5 other companies but for one reason or another they were not interested or didn’t turn up. I felt like I was coming to the end of my tether with it all, then I saw one of the Sheffield Development Property Vans; I made a note of the name and sent James a text. He arrived when he said he would, he helped us plan the space and dealt with the building inspector. What a refreshing change! The work started when he said it would ( almost to the minute ) and the guys who turned up worked in a very professional manner, they did not stop, not even for a break! They really did put in a sterling effort! Am I happy with SDP? Yes, I am delighted. Thank you James, Paul, and Guntis! Thanks again James"
ANGIE CLEMSON – SHEFFIELD, S8
"We contacted SDP to do a house inspection for us prior to buying our first house. James was very helpful in taking us through the potential works identified in our Home Buyers report and associated costs and risks. Once the house purchase was complete we took up SDP’s offer to undertake some works to the timber in our cellar. The work was completed in a professional manner and to a high standard and SDP could not be beaten on price by the other companies that we considered. Overall we were very pleased and will definitely consider SDP for future works. Kind Regards, Andy & Liz."
ANDY & LIZ, BRINCLIFFE, S11
"We were immediately impressed by SDP, because, unlike many similar businesses, there is a project manager, James Clarke, who liaises directly with clients and tradesmen. We felt safe in instructing this company to work for us, because we knew that we could go back to James if there were any problems. However, the job couldn’t have been slicker. The workmen turned up punctually and completed the work on time. They were friendly, polite and caused minimal disruption. I am registered blind and they were sensitive to this throughout, letting me know when and where to be more cautious when moving around in areas where they were working. After the work was complete, James phoned us to check whether we were happy with the work, prior to invoicing us. When I queried one issue which we were unsure about, he came out especially to inspect and ensured me that there was nothing to worry about. We now have a lovely new pavement outside our house; not only is it a bit more flood-proof, but much to our cleaner’s delight, is easier to sweep. My husband and I are currently in the process of requesting quotations for further work by SDP. It doesn’t seem to matter what job needs doing; they have all types of tradesmen: plumbers, carpenters, joiners, decorators, electricians, damp-proof specialists, roofers and people to do other outside work. No more scrolling through endless lists of tradesmen in the Yellow Pages and wondering who is trustworthy. We’ll go to SDP every time. Kind Regards, Sarah Byran."
SARAH BYRAN – HILLSBOROUGH, S6
"After looking around various kitchen design webpages and talking to people, the website for SDP caught our attention because of the bespoke design aspects and the quality of the workmanship. At our initial meeting with James, we were able to explain what it was we were seeking and he was able to advise and make suggestions. This collaborative approach was also taken when we met Steve the kitchen designer. From our first meeting to the completion of the project, continued close communication meant the project ran smoothly and we were aware of what was happening at each stage. James was an excellent project manager, liaising with various trades, electricians, plumbers, plasterers, kitchen fitters, flooring, to ensure the work was done to the agreed timescale and to a high standard and finish. The final result is exactly what we wanted with a few additional ideas from the design team. All of our friends who have visited echo our appreciation of the quality design and workmanship of our new kitchen which we are delighted with. We would highly recommend the work of SDP."
BRYAN & TIM - NORTON LEES, S8
We heard about James and SDP through a recommendation, so arranged what was a very friendly and informative meeting. We received a quote from him that was good value and comparable to other quotes received. We chose James because the finishes on the pictures on his website certainly looked impressive, and for the personal touch that was already apparent. This was also true of Steve, who designed the kitchen, and who was equally friendly and full of ideas. Nothing was too much trouble throughout the project, which was completed quickly and in a highly efficient way. We were in very regular contact with James, who was incredibly accommodating of anything we asked, and offered plenty of good suggestions, always looking to minimise costs as well as deliver a quality product. An example of this was a suggestion to alter the original design to incorporate a goalpost steel and remove a large pillar – something we didn’t think was feasible. He did this despite additional pressures on his team’s schedule, and kept costs down as much as possible. The end result was phenomenal - and hugely appreciated - transforming the space into a stunning kitchen diner that has wowed everyone who has visited since. Throughout the project, we were kept completely informed of timescales and what was happening next, and this was all done with a great degree of humour – the relationship developed between us and his team into a really close one. All of the numerous guys who worked on our extension were friendly, polite, clean and highly skilled. The end result has transformed our lives. It’s the first extension we’ve had done, and we were full of trepidation, but the whole experience was far less stressful than we imagined it would be; a major factor in this was that way that everything was managed via James as our main point of contact (although the various workmen were equally accommodating whenever we asked anything of them). All in all, I would highly recommend James and SDP. It’ll be the bathrooms next! Cheers bud Matt
Matt & Jane Loader – Whirlowdale Road, S11
"The small bedroom in our house required a complete refurbishment, including re-plastering, new electrics, re-siting of the boiler and the installation of wardrobe/cupboard space. We approached SDP as, when looking for potential builders, we came across their website, which seemed very professional. James responded promptly and came to meet with us to discuss our requirements. He was receptive to our thinking, listened carefully and offered good advice. We received the estimate within two days of meeting James. James arranged for the various workmen to visit prior to commencing their part of the work, where this was necessary and scope what needed to be done. When the work commenced James project-managed each aspect and visited each day while the work was ongoing. He also responded promptly to any telephone or text messages from us. We are very happy with the end result and the way this was achieved. Any unforeseen difficulties were resolved quickly by James in a professional and reassuring manner. Keith and Hilary"
HILARY – WOODSEATS, S13
"Thank you very much to Sheffield development properties. Recently we had our brickwork cleaned and re-pointed and I could not be happier. I had tried with many attempts to clean the brickwork around my front door and was having no success so I rang James at SDP to come and give me a quote for the pointing, while he was there he recommended having the brickwork sandblasted and what a great idea it was, the price was very good and the results are fantastic. Couldn’t be more happier with the finished result. Thanks very much James , I will not hesitate to call you in the future. Kind Regards, Callum and Cat."
CALLUM BATES – GREENHILL, S8
Here at SDP we like to work with property that comes in all shapes and sizes, from work spaces to places to live, and create buildings where people want to spend their time. That’s why we are passionate about creating beautiful, high quality property for sale or rent.
'Our vision is to establish a brand which is synonymous with luxury, quality and the highest standards of living' - JAMES CLARKE, MANAGING DIRECTOR



