Happy Building London Ltd

Happy Building London Ltd, Sutton, Surrey, SM1 2HX


10 Frederick Gardens,
United Kingdom.


Tel: 02071180035
Mobile: 07774505864

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

Testimonials rating

Member details

Joined: 18/06/2013


Happy Building specialise in New builds, Extensions, Basements, Loft conversions, Interior refurbishments and Renovations

We provide one point of contact throughout your building project from Design through Planning to Build.

The initial phase is the Designs Phase including planning and structural calculations, followed by the Contract Phase and finally the Building Phase. This Project Management service means we deal with all 3rd parties involved such as council, architects, engineers and all tradesmen meaning you have one point of contact throughout the entire process. However if clients have their own architects we will happily work alongside them.

You can find out more about our recent projects and read our client testimonials on our website as well as independant sites such as  MyBuilder


We are a checked and approved company by the UK highest construction standards - Safe contractor SSIP .We also carry the very prestigious 'BUILD ASSURED' Badge to guarantee total peace of mind to our clients. We were delighted to be chosen to represent the FMB in their current TV advert.


We use the latest estimating software to produce comprehensive and accurate estimates

Guaranteed Satisfaction

All our jobs are covered by our own personal 5 year warranty, plus they will be covered by the Consumer Protection Association Warranty for the same period. This gives you total peace of mind when dealing with Happy Building as it will cover any monies paid to us from the very beginning and any products and works carried out by us.

At Happy Building our focus is our client’s peace of mind. We proudly deliver on time, on budget, on plan and always with excellent customer service.

Testimonials (8 testimonials)

Relaying drive, new front wall and gates - Restoration & Refurbishment job in Putney, South London


The project involved relaying the drive, building a new front wall and installing electric gates and lights. Valter and Jenny from Happy Building were great. They kept me informed, discussed changes and were reasonable with their quote and the variations. They undertook the work efficiently and managed through the challenges as they arose. Will definitely use them again.

2 storey extension and full house refurbishment


I wouldn’t hesitate to recommend Happy Building. My project was a two storey extension and complete refurbishment of a house that had barely been updated since the 1950’s. From our opening meeting we built up an excellent relationship with Valter and this continued through the entire build. The work started on time and over a six month project only ran a couple of weeks over the scheduled end date which is pretty impressive. We were lucky to have Brigen as our foreman – he’s hugely experienced and nothing was too much bother for him. I’d be lying if I said there weren’t ups and downs over the course of the build but that’s to be expected; the end result is fantastic and we’re so thrilled to now be living in our dream home. Thank you!

Architectural design and planning


The service received was fantastic. The involvement from conception to the delivery of services was excellent.

Architectural Design


We contracted Happy Building to do a full house refurbishment, loft-conversion and extension. From the start, Valter, Beatriz and the team have been very helpful and understanding of our requirements. The first point contact is with Valter, the MD, which provides reassurance. In addition, he is always ready to answer queries, flexible to our needs and easy to talk to. Furthermore, they provide us with suggestions and recommendations to aid our decision-making. We have just completed the planning stage and are excited for the next steps.

Full house refurbishment and rear extension


Work is progressing generally very well at our home. An awesome project for us. We are amazed at the scale of the development. Each day for us brings good surprises as we see more work taking place. We are very pleased with Happy Building Team. They work to high standards, are creative, courteous, friendly, committed, honest and hard working. We would not hesitate recommending them.

Larissa - Wandsworth


Happy Building carried out a full house refurbishment to high standards. I found them to be punctual, tidy, respectful, quick and very easy to talk to. If anything they are too quick! The work carried out is exactly what we wanted and on a few occasions some alternatives were discussed that were actually better both practically and aesthetically. Highly recommend. They are a pleasure to have around.

Mr and Mrs Adams - House Refurbishment - Lewisham


Valter was very impressive on his initial visit with some exciting ideas for the house improvements and we had no hesitation in choosing Happy Building above the other two building firms who quoted. Having signed off on the budget and scope of work, Valter's team of builders arrived. We were hugely impressed with the skill, experience and work ethic of the team; the fact that they arrived early each morning smiling underlined the "Happy Building" epithet; Jarek, the site foreman, had an especially cheery demeanour. The work involved stripping the walls back to bricks, removing walls, reinforcing foundations, plastering, extending the bathroom and removing one bedroom to create a large ensuite bedroom. The latter certainly would not have been done without Valter's vision and patience in explaining how it would look. We were able to deviate from the original plans without any problem which was very important in achieving the final look which we had desired. Valter was very careful in sticking to time and budgets which I had never experienced before with builders. The kitchen, bathroom, two bedrooms, living room and hallways were finished to the highest possible specification within our budget. There were one or two small features which, with hindsight, we would have improved such as door handles and shower fittings, however this was down to us not specifying exactly what we wanted. These are very minor details and a tiny part of the overall picture.

Mrs Clargo - Putney


Happy Building converted my garage into a studio room which involved digging out the concrete floor, laying a new polished concrete floor with underfloor heating, insulation, damp proofing, new brickwork, doors and windows and a new roof with a large lantern light, new plumbing and electrics and the installation of a shower and toilet. We were delighted with everything that was done. The team are extremely hard working, helpful and their work is to a high standard. Valter is helpful, adaptable and a pleasure to deal with. They dealt very efficiently with any unexpected issues and stuck to their quote. They always arrived on time, dealt with any issues or emails straight away and finished the work on schedule.

Case Studies

Gail - Library Room



Full refurbishment and new roof terrace - Notting Hill, London


A 3 floor , full refurbishment at this beautiful building where we also converted the roof area into a terrace with access created via a new wooden staircase to glass box opening. 


Basement Extension - House Refurbishment - Epsom


This bungalow extension and renovation project in Epsom included a new basement. The clever design used on this project means that the living space was more than doubled.

Driveway, boundary wall and electric gate project in Putney, South London


Relaying drive adding a new front wall and gates 

This project involved re-laying a 200m2 driveway, building new front walls and installing two wooden electric gates and wooden fencing. 

This involved removing all the existing driveway stones, installing ducts for the electrics to the gate area, levelling the drive area and digging the foundations for the new walls.

The drive was then relaid, new brick walls erected, wooden fences installed, electric gates installed and automated, intercom wired in the house and pedestal lights fitted.

Great feedback received from the client :

Valter and Jenny from Happy Building kept me informed throughout the project, any changes were thoughtfully considered and implemented in a timely way. The quality of the finished project was great and I would not have any reservations in using Happy Building or recommending them.


6 bed Edwardian house complete int/ext refurb & rear and side extension - Sutton


This project on a three floor, six bedroom Edwardian house in Sutton included a rear extension with sky lights and full bi-fold doors to create a large sociable open space. We also built a side extension adding a study, ground floor bathroom and utility room.

Complete House Refurbishment Dec 2016


Sandertead Croydon 

Kitchen Extension


Putney Dec 2013

Full House Refurbishment


Lewisham  September 2015

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
  • Happy Building London Ltd 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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