How it works
Post a job
Tell us about your job, and we'll alert suitable extension builders in Harringay. It’s simple and free.
Tradesmen respond
Once your job is posted, you'll get responses from interested extension builders through the website.
Review and choose
Browse profiles, work history, and feedback, then choose who you wish to share your details with.
Browse Extension Builders near you
Browse extension builders near you, read profiles and contact them by inviting them to quote.
I've been working in building trade for over 20 years , I can undertake any job small and big from foundations to the roof and anything between. I can provide any references and I have insurance of £5 million. Me and my team take pride at what we do and we do it first... read more
Latest Extensions feedback review:
Rear wrap around extension for ground floor flat
Hi everyone , we have recently completed our side return extension on our ground floor flat , creating a Kitchen dinner / extra bedroom / and bathroom make over . Alban and all of his team of highly professional builders did a fantastic job...
We build, refurbish and extend buildings. Our strong regional presence allows us to foster trusting and beneficial working partnership with our customers, consultants, supply chain and local communities. read more
Latest Extensions feedback review:
Rear extension
We can not praise DPS enough. We interviewed 5 building contractors and we had a good feeling about DPS. Ralph was able to talk through the process in great detail and gave us an in-depth breakdown of the quote to see where exactly the our...
Qube Design&Build is an experienced Design & Construction company specializes in residential Extensions, Loft Conversions, Full refurbishments, New Homes and Contemporary Gardens.We undertake all design, planning & building control submissions, structural calculations and... read more
Latest Extensions feedback review:
Add extension (bedroom)
Sam worked on re-designing my new home. This was a complete reshuffle of rooms with the kitchen going to the living room and the living room extending to the garden. Extending my bathroom and adding a new bedroom. I consulted with him not...
Bluelime is a one stop shop for all your planning, interior design , structural engineering and construction needs. With over 8 years worth of happy customers we pride ourselves with our honest and inventive solutions. Free initial consultations and proven track record of... read more
Latest Extensions feedback review:
Rear extension
Alton and Carly at BlueLime Design and Build were engaged to draw up plans for my extension and get them approved with the council. I needed the drawings completed quickly and they were turned around as promised. Really professional advice...
The company’s success is built on the strong belief of quality work, attention to detail and on-time completion. Rea Construction Ltd has an in house team of builders, architects, and interior designers with all the relevant skills and qualifications which enable us to... read more
Latest Extensions feedback review:
Ground floor extension to Edwardian terrace
We couldn’t be happier with the professionalism and quality of workmanship from REA Construction. The project was delivered within budget and on time. We lived in the property during the work and we, our neighbours and the site were...
DC Building and Decorating is a well-established company which has built up a first-class reputation in the building industry by successfully delivering high-quality projects. The company's core values are quality, efficiency and reliability. We're proud to say that we've... read more
Latest Extensions feedback review:
Side Return extention and associated works
We would have no hesitation recommending Andi and Dragos - they did an excellent job on our project which was completed on time and on budget (there were some unforeseen works resulting in extras but these were outside their control - such...
We are a team of experienced professionals who carry out complete extension building and refurbishment projects. Our clients praise us for the professional and responsible attitude we bring to any project. Please do keep an eye on new photos posted as we progress with our... read more
Latest Extensions feedback review:
General works on flat
Myco carried out some works to our leaking roof terrace which included: (i) diagnosing the cause of the leak, (ii) taking up and completely replacing everything above the roof timber joists, (iii) laying new tiling on the terrace, and (iv)...
GLORUM Limited is a London-based construction company with 10+ years of building experience in domestic and commercial projects. GLORUM Ltd is your one-stop construction company made up of highly qualified and skilled tradespeople, designers and engineers that can... read more
Latest Extensions feedback review:
Buildings extension - Permission granted
Glorum has been extremely professional and hard working. They fulfilled the deadlines given. They have good team of all trades. Their admin is strong as well. They give attention to detail and come up with new ideas and technology. Great...
We are a family run business with over 25 years experience. We specialise in loft, single and two story extensions and refurbishments. We take pride in our work, making sure the customer comes first when it comes to quality and satisfaction. It is never about how fast one... read more
Latest Extensions feedback review:
2.2M by 5.2M single storey extesnion
DMCA completed the extension on time and within budget. The finish is very good. All the tradesman working on the extension were polite and respected that we were living in the property during the conversion and went out of there way to...
We are a family run building company , originally established in the East End of London back in 1971 , now operating from Essex, covering the whole of London and Essex. Approved by trading standards with a £5million public liability insurance. read more
Latest Extensions client reference:
J&N completed a two storey extension at the back of the house and added an en-suite to an existing bedroom. All the team were very polite and friendly and I had no qualms about leaving them in the house whilst we were at work. The work that...
At Geo Sky we have more than 10 years of experience in carrying out all aspects of the works related to your kitchen and bathroom starting from simply replacing the worktop, repairing the kitchen and bathroom units or design and complete refurbishment of your kitchen and... read more
Latest Extensions feedback review:
Single storey rear extension N5
We recently had a single storey rear extension and refurbishment of our flat completed by Geosky. From start to finish they were an absolute pleasure to work with, which I think is pretty rare to find! Their communication is 10/10, we had a...
We Have A Portflio That Speaks For Itself, With Over 20 Years Experience In Construction Providing Customers A Reasonable Price With Quality Work To Show For We Have No Doubt That We Meet Customer Satisfaction. Despite Having A Strong Resource In Manpower We Only Do 2... read more
Latest Extensions feedback review:
A garden outbuilding with recreation room and WC
Very happy with the end product! Service was excellent during the works progress and team was very helpful in advising what would be better options for different things such as roof and dimensions. Only delay was getting the finishing...
Based in London & covering South East England , C1 Construction & Development Services Ltd , trading as C1 Builders , is run by a highly experienced, hands-on management team with a dedicated, friendly & loyal workforce. Specialists in residential projects. Side returns ,... read more
Latest Extensions client reference:
Chas and the team at C1 builders worked on my house in Leytonstone in the first half of 2017. The standard of work and attention to detail was nothing short of top class. The house needed a complete refurbishment from top to bottom...
We are family run business and have been in the trade since 2001. Our professional team will always give the best they can to achieve optimal results and most important for us are the finishing details and customer satisfaction. We can provide a range of different services... read more
Latest Extensions feedback review:
Extension
I contacted John for a quote he came on the day as he promised, he gave me a quote which was reasonable, he started when he said he would, he came very proffessional, he really knows how to manage clients expectations and he was excellent...
We are RIBA registered architects with a wide range of experience of over 25 years within architecture, design and construction. We are experienced at new builds, full refurbishments, extensions and conversions, and have completed numerous residential and commercial projects... read more
Latest Extensions feedback review:
extension to ground floor flat and refurbishment
Phil is currently working with me to design an extension. He has being really helpful and came up with innovative ideas to improve my initial plans. The plans he has submitted are really good and way beyond my expectations. He has kept me...
Signature 1 Construction LTD is a family run business with over 20 years experience in the building industry. We specialise in extensions, loft conversions and full house refurbs. Every job we undertake we take great care of the clients house and are experienced project... read more
Latest Extensions feedback review:
House to flat conversion including rear extension
Fantastic outfit. Spoke with previous clients who confirmed the same. Will be using again.
AMG places great emphasis on the importance of up to date methods of design and construction. As a key player at the forefront within the market place we specialize in building Extensions, Loft conversions, Drylining, ceilings, painting and decorating to complete internal... read more
Latest Extensions client reference:
Stefan took over a project for me which was the renovation. He organized and did the plumbing, electrics, flooring and decorating. I was pleased with him, he was referred to me. His pricing was reasonable, all the tradesmen he had were...
Based in East London, Pioneer Concepts aim to improve the style, design and value of your property by offering design and build services that cater to all those needs. Pioneer Concepts can provide all building work services & technologies you require to transform your ideas... read more
Latest Extensions feedback review:
Ground floor rear single extension approx 15m2
Marcin and his fantastic team from Pioneer Concepts started our rear single storey kitchen extension at the end of July. This was the biggest project we have ever planned and we are so glad we chose Pioneer concepts. Marcin provided us with...
Our company is based on the belief that our customers' needs are of the utmost importance. Our team is committed to meeting those needs. As a result, a high percentage of our business is from repeat customers and referrals. I would be more than happy to showcase the high... read more
Latest Extensions feedback review:
Ground floor refurbishment.
The builders did an incredible job refurbishing my house. For my house I wanted to break the internal wall to create a bigger living room and also for them to refurbish the toilet. In the beginning they’ve set a period when everything...
Our priority is your satisfaction. Take advantage of our professionalism and years of experience in the market. In addition, our trained staff will take care of the fastest and most effective solutions to your contract. Of course there is the personal approach and high care. read more
Latest Extensions feedback review:
Two storey side extension
This was our first project, and we were exceptionally fortunate to find Bujar. We're actually getting tired of hearing our family and friends tell us how lucky we are and how amazing he sounds. One of the most honest, trustworthy, and...
Trusted by experts
Don’t just take our word for it, homeowners love MyBuilder too. We’re proud to be rated by Mumsnet.