Extension Builders in Kings Cross

Name: Extension Builder
Brand: MyBuilder
SKU: extension-builder
Rating: 4.3 (18 reviews)

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Some of our top rated extension builders in Kings Cross

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Sergei Manchev
No reviews yet
Extension Builder in Kings Cross
Trustworthy, reliable Handyman Services Based in North London with over 15 years experience Wide range of jobs covered , flexible on bookings and last minute jobs.  Flexible on rates provided hourly or fixed rate just contact me via details provided below. Below is a small sample of many jobs undertaken. Painting and Decorating  -painting from one wall to a single room to a whole house, wallpaper stripping and installing , regrouting tiles etc Roofing, gutters repair and installing Garden all types of job  Furniture Assembly  -Wardrobes, beds, chest of drawers, bedside tables, dining tables, chairs, desks, sofa, tv units and more Carpentry  - Assembly of furniture ; Erecting Partition walls etc   Fittings and appliance fittings  - changing/ fitting taps, washing machines and other appliances  Wall mounting -curtains, rails , TVs, pictures, floating shelves,blinds, clocks etc Flooring/Tiling/Laminate - Tiles, Vinyl, laminate, etc  Door/windows fittings -fitting locks, hinges , cutting doors to size, fitting windows, velux Wall repair Plastering -filling cracks, holes,dents in the walls etc. Free quotes& same day service.  Contact anytime available 7 days a week Drop a msg on WhatsApp with a job description
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Damian Construction
No reviews yet
Extension Builder in Kings Cross
We are experienced building company with over 20 years of experience specialising in high quality, luxury renovations and buildings extension projects, serving all London private and commercial home owners. Using only best materials available, together with our innovate designs with traditional values and workmanship, we make sure that we offer the highest build quality at an affordable price.
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Rafa360
Rating: 5 out of 5
Extension Builder in Kings Cross
Hello, I'm Rafa360. I'm experiencing digger and dumper driver. I have many years of experience with groundwork, demolition, construction sites. I have private mini digger and many other tools whatsoever you need to do your work. Rafa360 based in Greenford London offering service of Groundwork Mini digger and dumper Digging foundation for extension Digging trenches Demolition Shed removal Wall removal Concrete path, base removal Concreting Shed base Retaining wall Handyman Fencing Driveway Garden cleaners Garden Levelling Tree stump removal And many others Nothing job is too big or to small no hesitate to invite me if you need to do your task with good quality and responsibilities person. Regards Rafa360
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Latest review:
Groundwork & Foundations- 13 Feb 2026
Rafa is a good tradesman and worked well. Would hire him again.
O&C General Construction ltd
Rating: 4.2 out of 5
Extension Builder in Kings Cross
O&C General Construction is a construction company that specializes in renovations and general construction. The company has a wide range of experience, from renovations to new construction, and is able to provide a high level of service and quality workmanship. What inspired us to start our own business is adding value to people’s lives, by creating the perfect home for each client, by listening to their needs and create a project that’s perfect for them.
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Latest review:
Restoration & Refurbishment- 19 Apr 2026
Didn’t return to finish the job, respond to calls or messages in response to finishing the job. Sadly wouldn’t hire Ovi & Mihai (O&C) again. Friendly & responsive initially. Worked well, on time, eager to please, did a good job - not perfect but adequate, average attention to detail but corrected when asked. We initially had a faux chimney put in, they touted for more work & provided alcove shelving/cabinet ideas which we subsequently hired them for. They worked intermittently (dad around for first half of job then left for Romania) as this was agreed as best for both parties. However they left the job incomplete once paid (were paid on time, each time, with no bargaining). Didn’t respond to texts or calls, leaving cabinet doors unfinished, large chips & cracks unfilled. Laminate was also poorly cut around hearth stone, left chimney cutout unfinished with no cement to the base. Lack of respect and wouldn’t hire again as cannot trust they won’t disappear. Note previous reviews.
Builders World Supplies Ltd
No reviews yet
Extension Builder in Kings Cross
The company specializes in total home or flat renovations and house extensions. The team has actively participated in both large and small scale construction projects in London over the last 15 years. The quality of the work is outstanding and we can fit any budget. Our experience and our extensive contacts in the industry enable us to offer solutions suitable for the customer's needs. The founder and Director of the company is a qualified Civil Engineer.
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Darko
No reviews yet
Extension Builder in Kings Cross
I’m a skilled handyman, carpenter, and joiner with extensive experience in flooring and tiling. Known for building strong rapport with clients, I bring meticulous attention to detail and a deep respect for others’ time. I take pride in every project I undertake, consistently applying my knowledge and refining my craft throughout the week. Reliable, precise, and passionate about quality workmanship.
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Empe building services ltd
Rating: 5 out of 5
Extension Builder in Kings Cross
BASED IN WEST LONDON EMPE BUILDING SERVICES ltd. ARE A COMPANY OFFERING A RANGE OF BUILDING SERVICES. WE TAKE GREAT PRIDE IN OUR WORK AND PLACE A STRONG FOCUS ON WORKING VERY CLOSELY WITCH OUR CUSTOMERS THROUGHOUT ALL THE STAGES OF THE PROJECT, AS TO ENSURE EVERY DECISION IS DISCUSSED AND QUERYS ARE ADRESSED. OUR REPUTATION IS THE FUNDATION OF OUR SUCCESS. WE TAKE PRIDE IN OUR APPROCHABLE, PROFESIONAL, EFFICIENT AND TRANSPARENT SERVICE. PLEASE VIEW OUR GALLERY FOR EXAMPLES OF OUR WORK.
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Latest review:
Extensions- 31 Jan 2020
We had a porch built by Emil & Peter's team & lead water pipe changed, our house has gone from the tattiest on the street to the smartest now :) The guys turned up on time when they said & worked hard all day, their workmanship is excellent & my neighbour has also used them to do quite a few jobs now& are really pleased with their work. I will definitely be using them again & would highly recommend them!
THE AAKTR GROUP LTD
No reviews yet
Extension Builder in Kings Cross
At Aaktr Developments we formulate bespoke design & construction. Residential Properties: From design to refurbishment elegant, tailored homes that blend style, functionality, and innovation. Commercial Spaces: Designing and refurbishing sophisticated offices, vibrant cafes, and standout restaurants that reflect the unique identity of our clients. Churches: Preserving heritage and enhancing functionality through thoughtful redevelopment. Concept Design: Bringing your ideas to life with innovative and inspiring design concepts that set the foundation for your project. Full Architectural RIBA Services: Comprehensive architectural planning and design, adhering to the highest standards of the Royal Institute of British Architects (RIBA). Full RIBA/Construction Services: From initial planning to final construction, we deliver bespoke, high-quality solutions, ensuring every detail is crafted to perfection and on time.
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DS JOINERY WORKSHOP
Rating: 5 out of 5
Extension Builder in Kings Cross
Fast/Bold/Decisive/Smart/London based building company dealing with renovations, extensions, loft conversion, new builds and commercial building projects - including indoor projects such as : •kitchen fitting •tiling •bespoke joinery •flooring •landscaping •doors&windows •painting&decoration Looking foward to finish projects with highest quality possible for you !!
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Latest review:
Good value, professional, trustworthy and very hard working! And to top it all off, Dori has made genuinely beautiful cupboards - I could not recommend him enough & will 100% be using him again in the future!
Pkbuilders
No reviews yet
Extension Builder in Kings Cross
I am working in London like a builder from 2004. From that time I did many different jobs like extensions, loft conversions, many refurbished jobs. All my clients was very happy with the jobs was I made and they recommended me to them friends. I am looking for some jobs in my area and save some time for travel.
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Ulas Planning Ltd
No reviews yet
Extension Builder in Kings Cross
My name is Ulas and I am a structural/civil engineer with +15 years experience in construction industry. We are a team working and dealing with design and build across to north London on residential and commercial properties. Also we are providing steel beams and columns for any type of extensions as per drawings.
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Emerald london building solutions fixed
Rating: 4 out of 5
Extension Builder in Kings Cross
Refurbishment and building contractors/carpentry Contractors we are master builders and a reputation of being excellent at a reasonable Price all work is backed by guarantee on all works
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Latest review:
Restoration & Refurbishment- 15 Jun 2020
Left the job unfinished after many days of chasing to complete. Quality dependent on individual tradesman. Initially good quality but other workmen poor. In the end I had to throw them offsite.
Erald Gjoka
No reviews yet
Extension Builder in Kings Cross
We're a teammate of three people in two different fields; electrican and fire security and handyman/painter and decorations We have been working for 5 years with different builders and contractors and private clients We Provide the following service General Building New Building Loft Conversions Roofing Extensions Painting and decorating All electrical works Fire alarm system Entry phones system Access control Cctv
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MSKBUILDERS
Rating: 5 out of 5
Extension Builder in Kings Cross
Bathroom Specialists Builders Building Contractors Conservation Specialists Custom Build/Self Build Extensions Garage Conversions Loft Conversions Refurbishments Work for Disabled
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Latest review:
Kitchen Fitting- 4 Feb 2020
Msk builders did a good job with my kitchen very professional and reasonably priced, I would recommend them.
Newline Building Solutions Ltd
Rating: 5 out of 5
Extension Builder in Kings Cross
Newline Building Solutions Ltd has been trading for over 10 years. We undertake all works including bathroom renovations, extensions and loft conversions. We have very good references throughout Greater London, including Schools, Offices and Residential clients. We take all measures to deliver our projects on time and within budget. We have a long list of associates which allows us to deliver projects from design to completion.
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Latest review:
The job involved stripping out existing kitchen and downstairs bathroom and fitting new ones as well as knocking down stud walks to create an open plan living space. We were very happy with the quality of the work and it was completed on time with no additional costs. Overall we are very happy with the work and wouldn't hesitate to use Emile again for any future work we do.
HOMES ON DEMAND DEVELOPMENT PROJECTS LTD
Rating: 5 out of 5
Extension Builder in Kings Cross
Main works are extentions covering all aspects such as Kitchen, Bathroom installs, Plastering, Studwalls, Lay various styles of flooring. We do all aspects of electric works even the smallest sides such as changing face plates to a full rewire.
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Latest review:
His workmanship was excellent as to was the professional attitude he displayed throughout the job. And last but not least his reliability was 100%.

4.3

Top rated Extension Builders

Our Extension Builders in Kings Cross, are rated 4.3 out of 5 based on 18 reviews from customers like you.

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What types of services are offered by local extension builders in Kings Cross?

Building an extension is a major milestone for any home. It’s not just about adding extra space, it’s a big step that can transform how you live day to day, opening up new possibilities for comfort, lifestyle, and family needs.

This is why it’s so important to find the right extension builders in Kings Cross for you. They can help with a variety of tasks and projects, including:

Extending your home with an extra room
Two+ storey extensions
Adding partition walls to create more rooms
Building annexes or external structures

To find the right extension builder near you, simply post your job on MyBuilder. Explain the type of help you’re looking for, and then home extension builders in Kings Cross who are available and interested can respond to your post.

Browse profiles, read customer reviews and get quotes from your chosen Kings Cross extension builders, all before you decide who to hire.

What are the hourly rates of extension builders in Kings Cross?

Before getting started with your extension project, it’s important to have a clear budget in place. On average, extension builders in Kings Cross will charge between £16 and £42 per hour.

Single-storey rear extensions cost between £20,000 and £60,000 depending on size and finish.
The cost of double-storey extensions, which add more space and value, can range from £100,000 to over £170,000.
Larger wrap-around extensions that combine multiple extension types can range from £40,000 to over £120,000.

The cost of an extension will vary depending on your property. For instance, extending in certain areas may require structural adjustments to ensure stability, which can increase your material and labour costs.

To get an accurate price for your home extension, request detailed quotes from several Kings Cross extension builders near you on MyBuilder. This allows you to compare what each quote covers and how much your Kings Cross home extension project is likely to cost.

Find extension builders in Kings Cross with MyBuilder

Hiring the right extension builder in Kings Cross with MyBuilder couldn’t be easier. Just follow these simple steps:

Step 1: Post your extension project on MyBuilder

Whether you’re planning a single-storey extension, a loft conversion, or adding a new room, post your job on MyBuilder to find local Kings Cross extension builders. Once your job is live, we’ll share it with home extension builders in Kings Cross who can express their interest.

Step 2: Compare different extension builders in Kings Cross

When you start receiving interest, review profiles of local Kings Cross extension builders, check their previous work, and read real customer reviews. Ask about timelines, materials, and request detailed quotes.

Step 3: Hire Kings Cross extension builders with confidence

After gathering all the information and quotes from your chosen home extension builders in Kings Cross, compare their experience, guarantees, and costs before choosing who to hire.

You’ll also have confidence knowing that every tradesperson on MyBuilder is verified through several checks, including:

ID verification: When a tradesperson joins MyBuilder, we ask for a valid ID, such as a passport, ID card, or eIDAS certificate.
Company verification: For tradespeople operating under a company, we make sure every tradesperson has a registered business.

Did you know? Our continuous monitoring and complaints process ensures that tradespeople who don’t meet our standards are promptly removed from MyBuilder’s platform.

Kings Cross extension builders are ready to help. Use MyBuilder today to find the right professional for your home extension.

What to ask a Kings Cross extension builder before hiring?

Before hiring an extension builder in Kings Cross or extension building company in Kings Cross, ask a few key questions to make sure you’re choosing the right professional for your home extension project.

What qualifications and experience do you have as an extension builder in Kings Cross?

An extension builder in Kings Cross should have a strong track record with similar projects and relevant building qualifications or trade memberships, such as the Federation of Master Builders (FMB) or TrustMark.

Will my home extension meet all building regulations and planning requirements?

Your Kings Cross extension builder should ensure the project complies with Building Regulations and, where necessary, handle or assist with planning permissions. Ask how they manage building control inspections and what documentation you’ll receive once the project is complete.

What experience do you have with similar extensions in Kings Cross?

Ask to see examples of their previous work, or view examples of their work on MyBuilder. Ideally projects similar to yours in scale and design. This helps you assess the Kings Cross extension builder’s ability to deliver a result that meets your expectations.

How long will the extension take to complete?

Extension project timelines can vary depending on size, complexity, and weather. A typical single-storey extension might take around 8 - 12 weeks. Request a detailed schedule so you know what to expect and when key milestones will be reached.

Do you offer a guarantee for your work? Most Kings Cross extension builders offer a guarantee or warranty on their work, often between 1 and 10 years depending on the project and materials used. This gives you assurance that any issues will be resolved after completion.

If you still have questions about the professional you are looking to hire, we have a full detailed guide on hiring the right builder here.

FAQ: Common questions about home extensions in Kings Cross

Can an extension builder in Kings Cross help with planning permission?

Yes, many extension builders in Kings Cross can guide you through the planning process. They can help prepare drawings, advise on local requirements, and liaise with your local council to ensure your project meets all necessary regulations.

Can an extension builder in Kings Cross handle everything from design to construction?

Many Kings Cross extension builders offer full design-and-build services, managing both the architectural planning and construction stages. Ask your builder whether they can provide a complete package or if you’ll need to hire an architect or designer separately.

Will an extension builder in Kings Cross help with materials and finishes?

Yes, most extension builders in Kings Cross can source materials and offer advice on finishes that suit your design and budget. You can also choose to supply certain materials yourself, just make sure this is agreed upon before work starts.