Triangle Construction

Triangle Construction, Edgware, Middlesex, HA8 8UQ


23 Warwick Avenue,


Tel: 02089583117
Mobile: 07877694900

When calling, please remember to say you got their number from the FMB website

Testimonials rating

Member details

Joined: 27/09/2011


We are an established and vibrant company based in Edgware who has completed a lot of extensions, loft conversions and refurbishments in London in recent years delivering exceptional costumer satisfaction and value for money.


We offer

·         Great value for money-with no hidden costs.

·         Guaranteed work-10 years guarantee.

·         We are a member of FMB including Trustmark.

·         Our clients are happy to speak to you to confirm our reputation.

·         Project manager and structure engineer on site throughout the building process.

·         Designer if needed to help you decide.

·         All trades are fully qualified.

·         We have Liability Insurance to give you the peace of mind.


  If you would like to know more about our company we would be happy to carry out a free assessment, quotation and arrange for you to visit one of our completed projects local to you.



Testimonials (6 testimonials)

New build of a 5 bedroom detached house


We employed Triangle Construction to build our dream home. We received several quotes from local builders, as it was a large, complicated project and even if Triangle was not the cheapest, we do not regret our decision. Altin’s qualifications on structural engineering and his experience in construction, reassured us that they were the right team to take on the build. Altin dealt with other companies (Thames Water, National Grid, BT etc ,as it was a new build and it needed services connected) in a very professional manner, updating us weekly about the progress of the work. He was patient, polite and considerate. He kept to the time given and there were no unexpected costs involved. The quality of the finish is excellent. The house is truly beautiful. I highly recommend Triangle Construction.



"Our full refurbishment was a 9 month project and had the potential to be a complete money pit! However, this Company took time with the quote, respected our budget and astounded us by coming in on budget and ahead of time. The men were a joy to work with and regardless of whether the owner was on site or not, remained motivated and courteous. I have never experienced such a work ethic and the speed that they worked at was phenominal. My home is located on a busy road so we were expecting rather a lot of grumpy neighbours but if issues did arise, they were calmed quickly and without fuss. My neighbours said the builders couldn''t have been better (and one of them is a builder!!). I believe we found a rare quality with Triangle Construction which was the ability to take full responsibility for the finished product and the personality to keep things calm with us, the suppliers, the neighbours and your tradesmen. We are looking forward to our first Christmas this year in our new home that Triangle Construction helped us create and I shall be in touch early next year with regard to some more work in the basement. "

Double storey extension, full internal renovation and loft conversion


We hired Altin (Triangle Construction) to renovate our 3-bed house and to extend two-storey to the side, back and into the loft to create a 6 bedroom, 3.5 bathroom house. We decided to write a lengthy review, as we believe it is important to recognize good reliable trades people. We found Triangle Construction (led by Altin Ndoni) on the Federation of Master Builders (FMB) website. We interviewed Altin and a number of other builders and felt Altin to be genuine. Having found Altin's quote to be within the middle of the range of quotes received and given his membership of the FMB we decided to go ahead. We were very pleased with the outcome and would highlight the following experiences: - The quote given was the final price asked for and paid and there were no additional hidden costs. Payments were always in arrears and only invoiced in the knowledge that we were satisfied with the work being done. - The work was completed within the time frame discussed. Altin also then came back afterwards to do the snagging. Altin accommodated a longer time-frame for the snagging as we had recently welcomed a baby into the family and wanted to settle down a bit before further work was done. - Altin's team was professional, polite and courteous with us and our neighbours, which soothed some of the inherent challenges of doing work on a semi-detached property - As in any construction work, unforeseen events and other issues did crop up. Altin dealt with these very well - discussing with us the options before going ahead. - Perhaps most importantly for us, Altin was always reachable and available for us when we needed him. Both my wife and I worked in the city and so needed to meet in early mornings or during weekends. Ultimately, Altin and the team did a great job and my wife and I are very pleased with the outcome and would highly recommend him.

Extension, loft conversion and renovation


"We recently had the pleasure of appointing Triangle Construction as our contractors for our loft conversion, ground floor rear extension, under floor heating and associated renovation works. We are simply amazed at the quality of the workmanship produced and we highly recommend him and all his team at Triangle Construction. Altin's extensive knowledge of building works and his background degree in Engineering,shone through the project assisting us with some excellent practical solutions. Indeed, from our initial consultation with Triangle Construction to the near completion of the build, we have been delighted with every aspect of the process. Altin and all of his team were flexible, approachable, polite, conscientious, tidy, courteous and considerate. We have completed similar projects in the past with other contractors but we can genuinely say that Triangle Construction are the best ones. We will without a doubt use Triangle Construction again in the future and would strongly and highly recommend them to anyone!"

Extension + refurbishment


We have recently finished a complete refurbishment of our house. We would like to thank Altin and his team for the fantastic job they did. The standard and quality of their work was very high with a great attention to detail. Altin is very reliable and wants to do the best possible job. The whole team was extremely considerate, helpful, polite, tidy and hard working. Many of our neighbours commented on how nice they were! We have recommended Altin to other friends and would highly recommend him to anyone who is planning to have work done on their house. We will not hesitate to use Altin and his team again in the future. Maria and Edoardo, Teddington.

Loft conversion


"We cannot recommend Triangle Construction highly enough. I first thought to ask for a quote because I had been passing one of their sites on my walk to work, a pretty extensive side extension and total reworking of the existing build, and noted how the workers always were respectful of passers by during works, pausing to let them past and acknowledging them (and the works of course looked very well done and were being progressed diligently). Ours was a loft extension, which necessitated similar sensitivity, in that we remained living at our property during works. Triangle's personnel at every level were always considerate, hard working and talented at their jobs. Altin, the [Director] of Triangle is everything anyone concerned about builders needs to put their minds at ease. He is quietly confident, unflappable no matter what the challenge, clearly experienced and full of practical solutions, always taking what you have to say seriously. Altin has a top team and manages them well between Triangle's various jobs. Triangle's sensitivity to close urban redevelopment considerations was brilliant. My neighbour commented on many occasions that he has never seen such tidy builders, with the tools and materials at the front of my property always kept in good order and debris removed as it accumulated. We are delighted with the results. The utility of every part of our loft and the stairs has been maximised and everyone from visitors to the neighbour's party wall surveyor had said how great it looks, seamless with the existing build. The loft looks light and open during the day and at night; the bathroom a pleasure to experience. We would certainly use Triangle again.

Case Studies

Single storey side and back extension, loft conversion and full refurbishment



Another happy client.

Extension, loft and full refurbishment


Ground floor extension, loft conversion and full renovation completed to a high standard. 

Double storey extension and renovation


These are some photos of a double storey extension in Edgware.

Groung floor extension + refurbishment




This is what our client had to say about Triangle Construction.

What was great about working with Altin was his reliability and his commitment to doing the best possible job.  He only does one job at a time, so he is on site with his team every day pushing the job forward.  He has a real attention to detail, and on several occasions I know did work that wasn’t in the original scope because he felt it was the right thing to do.  He started and finished on time, and the big challenge for us was staying ahead of the decisions that he needed to get the job done. He was also really easy to work with – nothing, apart from the parking in Chiswick, was ever a problem.  He was not the cheapest, but we were really pleased with the work.  And importantly he stuck to his price.  The only extras were ones that really could not have been thought about up front (we opened up one of the ceilings to do the wiring to discover that more than half of the joists – from some previous builder – were not tied into the wall and all of that had to be replaced).  We have had no hesitation in recommending him to other friends, who have been equally delighted.

Martin- Chiswick



Side and rear ground floor extension + refurbishment



 This is what our client had to say for Triangle Construction:


We wish to thank Altin and his team for helping us creating a lovely family home. The project scope included building a rear and side ground floor extension, a small first floor extension and changing the lay-out of the house. Our five-bedroom house was completely re-wired, a new water and heating system was installed, a new en-suite bathroom was built and the house was re-furbished throughout.   Altin delivered high quality workmanship on time and within the set budget while paying attention to small details that make the big difference. Altin and his team worked very hard and were such a joy to interact with. We would warmly recommend Altin and his team.

Stephen & Christina, SW13


Member type

FMB member with TrustMark

  • Have signed the TrustMark license
  • Have had an inspection on a job in progress on joining and on a completed development every three years thereafter
  • Has a minimum of twelve months trading
  • Verified no un-discharged bankruptcies or relevant and outstanding County Court Judgments
  • Have passed credit checks, public record and director checks
  • Has Public and Employer (if applicable) Liability Insurance
  • VAT registration (if applicable)
  • Confirmation of business address/details
  • Triangle Construction has agreed to abide by the FMB Disputes Resolution and Complaints Procedures
  • Has signed up to the FMB Code of Practice
  • Can offer the suite of FMB Insurance warranty products for the domestic and commercial markets (contact the FMB Insurance office for rates)

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