Domestic building specialists · Essex

More room.
More possibility.

Beautifully considered extensions, garage conversions and home transformations—planned, managed and built by one experienced team.

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Drawings to completion

One dedicated team

Southend & across Essex

One team. The complete build.

From first sketch to the day you move back in.



A successful project should feel exciting, not overwhelming. We coordinate the whole journey—from early ideas, drawings and approvals to construction, trades and finishing—giving you one clear point of contact throughout.

We bring the capability to deliver ambitious work with the personal involvement, attention and accountability you want around your home.

Meet the team ↗

What we do

Transforming the homes people love.

Explore all services ↗

01

Extensions

Thoughtful new space that feels like it has always belonged—designed around the way you live.

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02

Garage conversions

Turn underused space into an office, bedroom, snug or flexible room finished to the same standard as your home.

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03

Whole-home renovation

Structural changes, kitchens, bathrooms and complete refurbishments, brought together as one coherent project.

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04

Loft conversions

Unlock the space above you with considered layouts, confident construction and a beautifully resolved finish.

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Maintenance on driveway

Turned up on time, and did a professional job, exactly what we needed. Thanks and we would recommend
 

Garden and Driveway renovation

1 Stop Building was very helpful in transforming our garden and driveway. The work he completed was great and we are very happy with the finished product. We will continue to use 1 Stop Building for future building work.
 

Outstanding Workmanship and Professional Service

Excellent service from start to finish. The team were professional, reliable, and highly skilled throughout the whole job. The workmanship was completed to a very high standard, with fantastic attention to detail and a perfect finish. They were always punctual, tidy, and kept us informed every step of the way. Nothing was too much trouble, and the final result exceeded our expectations. We are absolutely delighted with our new kitchen and would highly recommend them to anyone looking for quality work and excellent service.
 

Ground floor refurbishment.

We contacted 1Stop to carry out a complete ground floor refurbishment on our newly purchased house. He dealt with building control and the Structural Engineers as and when needed. Yes there was dust and dirt but was kept to a minimum as much as possible at all times. We are very happy with the work done and would highly recommend 1Stop.
 

Work carried out is of very high standard

I would highly recommend this company had lots of work done inside and out always really happy with the outcome l’ve had a extension which was excellent also front of house done today and will getting 1 Stop Building back for rest of renovation
 

100 % recommendation

Absolutely a pleasure to have this company work for me Polite , trustworthy, honest , and professional Absolutely highly recommend 1 Stop Building

Building work

1 Stop Building did a fantastic job with our boundary wall. They meticulously looked at our needs, even involved a structural engineer .The team is very professional and always ready to listen to us and make changes to suit our needs . They kept us posted with the reasons when the team could not make it. My experience with many other companies was that you need to chase them all the time to get job done which can be tedious affair . This was completely different experience . I would recommend them Anytime
 

Trusted professionals

1 Stop Building Services has undertaken huge home building projects and lesser ones for me since 2018. Its great to have a trusted team of professionals available for both planned projects and to deal with emergencies. Hands-on DIY is not my specialist subject but I do favour those who are competent, reliable and take an obvious pride in their work. That is exactly what you get with 1 Stop!
 

The best builder around!

What a company! 1 Stop Building was profession from start to finish. I had a roof and back extension on my home and I had no issues or problems. All work was carried out to perfection in a timely manner. Their pricing was spot on and was transparent throughout. They made my dream come true. Such a friendly and amazing team. I will recommend them to everyone and they will have all my future business. I cannot thank them enough.
 

Emergency plumbing

Emergency plumbing carried out by One Stop Building Services today. The hot water pipe under my bath suddenly burst spraying hot water everywhere. Called these guys and they arrived within minutes ( fortunately they were only working a few streets away) they immediately turned off the water in the street as I had no access to the inside stop cock. Replaced the burst pipe and checked everything was fine. Totally saved my entire downstairs being flooded
 

Repair brick wall – front of drive

1 Stop Building was friendly , polite and reliable.
 

Highly recommended garage conversion by a trustworthy team

1 Stop Building Services converted our garage into a bedroom with an ensuite, and we’re absolutely delighted with the result. They were efficient, knowledgeable, reliable, and trustworthy throughout. As inexperienced homeowners, we didn’t realise how many decisions were involved, but 1 Stop Building was incredibly patient and always happy to offer advice. We obtained three quotes and 1 Stop Building was very competitive. The standard of work is excellent, and we wouldn’t hesitate to highly recommend them.
 

Professional and reliable

1 Stop Building was very professional, courteous and helpful. They sorted out various problems that I had in my home. Was on time and cleared up too! Would highly recommend.
 

Full room renovation incl stairs and landing and repairs to porch

From start to finish the team have been very professional. We had very good communication and they under stood the vision that we wanted for the renovation. They were very prompt each day and explained the following days plan so we knew what was going on. The workmanship was to a very high standard from plastering and paint advising solutions when plans couldn’t be fulfilled.
 

Outstanding Service and Exceptional Workmanship!

We are absolutely thrilled with this amazing team. ⭐️⭐️⭐️⭐⭐ After dealing with a couple of builders who didn’t work out, finding them has been a breath of fresh air. They completed every part of our renovation to an exceptional standard from kitchen fitting, flooring, plumbing, electrical work, and painting. Having one reliable team that can do everything made the entire process smooth and stress-free. They were professional, friendly, and always easy to contact for updates. Their attention to detail and quality of workmanship is outstanding. We couldn’t be happier and highly recommend them!
 

Very reliable and highly skilled .

Excellent workmanship highly professional team always happy to give advice when needed. Would have no hesitation in recommending them.
 

Garage conversion

I was so glad we chose the team from 1 Stop Building. From start to finish they were brilliant. As well as carrying out the bulk of the work himself with a small team of reliable co-workers, he liaised with all the other relevant trades – plumber, electrician windows install and this ensured the project went smoothly from start to finish. So much so that I gave the team a little extra on completion just to demonstrate how pleased I was with the work and his attention to detail. We will be using 1 Stop Building for our upcoming bathroom refurb. Cannot rate them highly enough. +++++
 

Rear single storey extension

We used One Stop Building for our single-storey rear extension and couldn’t be happier! The team were professional, friendly and kept everything on schedule. The quality of the work is excellent and the whole process was smooth and stress free. We’re thrilled with the result and would highly recommend 1 Stop Building. 

Tom Mitchell

Emergency Repairs

1 Stop Builders were recommended to us for some emergency repair work after our Kitchen ceiling came down due to a water leak from the shower. I cannot praise their service highly enough. They turned up on time, liaised with insurers on our behalf, phoned when they said they would and kept us informed at all times. Jason and Paul were experienced and more than knowledgeable about their subject. They were diligent, proficient, tidy workmen who charged exactly what was quoted – no hidden extra’s and they went more than the extra mile to ensure customer satisfaction! Will definitely be using them again.

Andy & Jacqui Thornton

Garden house

We would just like to say how pleased we have been with the work undertaken by One Stop. Our project was to construct a garden house incorporating an office. The slate pitched roof was suggested by them as a feature to enhance the building and we have been delighted with the design, construction and indeed the entire finish which has exceeded our expectations. Our building, being clearly visible from the rear of our house meant that we wanted it to enhance the garden space whilst ensuring that it would also be functional. The use of the cedar cladding and the inclusion of the oak porch has made it look so welcoming. The slate roof is actually not slate at all but a revolutionary imitation product that is a fraction of the weight or indeed the cost of using real slate – even up close you can not tell the difference!

We found One Stop to be professional, skilled and imaginative. We can not stress how delighted we are with the finished project which was delivered within our budget and on time. We certainly intend to use them again for our proposed loft conversion next year.

Robert & Jacqui Vickery
Brentwood
Essex

Robert & Jacqui Vickery

Water Damage Works

In october we suffered a massive burst from a mains water pipe, we contacted 1 stop building services after recommendations.

Jason Halzelton and Paul Venables even at the start of our huge ordeal went over and above board and came to our premises out of hours to estimate for the works.

Jason and Paul really assisted and proceeded with the renovations works immediaitely to ensure our family could be back in our property just in time for Christmas.

During the whole ordeal and even with tight time constraints Jason and Paul carried out their expert workmanship to perfection.

We would throughly recommend 1st stop to any persons wishing to undertake any general building works , its really difficult these days to source a builder of genuine skills and workmanship.

We are all completely satisfied with our new home and 1st stop made a very stressful experience easier.

Huge thanks

Kelly and Graham Rose

Kelly & Graham Rose

Selected projects

Built around real life.

All case studies ↗
Completed garden room extensionGarden room extensionSouthend · Extension
Modern open-plan kitchen Open-plan kitchen Essex·Renovation
Loft conversion project
Loft conversion project Essex·Renovation

A complete service

Every detail handled. Every stage clear.

01

Listen & explore

We understand your home, priorities, budget and what a better space needs to do.

02

Design & plan

Drawings, specifications, permissions and a transparent route from idea to site.

03

Build & manage

Skilled trades, careful coordination and regular communication from one accountable team.

04

Finish & hand over

The finishing touches, final checks and a space ready to enjoy from day one.

Why 1 Stop

Capable enough for the whole project. Close enough to care about every detail.

“Professional, skilled and imaginative. The finish exceeded our expectations—and the project was delivered on time and within budget.”

Robert & Jacqui, Essex

Why homeowners choose us ↗

Initial cost guide

What are you planning?

Select a project type to begin. Your answers will produce an estimated range, not a formal quotation.

Latest from site

Work in progress.

Visit the journal ↗
  • Work this last week…

    Work this last week…

    Some nice progress on this new extension in Hockley, with the 1.5m foundations recently completed and the oversite all dug down, ready for the brickwork to commence! There’s a fair bit of work that goes into an extension before anything starts coming out of the ground, so it’s always good to reach this stage. Next…

  • Latest from site: opening up the heart of a home

    Latest from site: opening up the heart of a home

    New photographs and progress from a structural renovation in Essex. See how careful structural alterations are transforming a series of separate rooms into a brighter, more open living space at the centre of the home.

  • What could your garage become?

    What could your garage become?

    A look at the practical, flexible rooms hiding inside an underused garage. From home offices and playrooms to guest bedrooms, gyms and additional living space, we explore how a garage conversion can make better use of the space you already have.