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Mason & Stone



Get a free quote from this professional

Get a free quote from this professional

‘20 Certificate of Excellence, 2020


We are general builders company based in North-West London.
Specialize in:

- Property Extensions
- Loft Conversions
- Refurbishments

We also provide services for electrical and rewiring work.


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Reviews (2)

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2 customer reviews

2 February 2020

Very good work...all to schedule,completed to a high finish and attention to detail and done by a smalk team of friendly trustworthy hard workers who communicated well on all fronts. I would highly recommend them...

31 January 2020

Fantastic guys! Went the extra mile that gave me a stunning finish


If you require only internal work done to your garage, such as converting it to a living space, you do not require planning permission for this.
Some garages however cannot be converted if they are too old and badly built or even asbestos ridden. Therefore an assessment needs to be conducted on the soundness of the foundations, roof and walls.
You can get some advice from the Building Control department of your local council.

When a garage is fit for conversion you still need to check the floor levels. Usually you will need to raise/lower floors and or ceilings to make it flow with the rest of your house.

For it to be habitable there also needs to be insulation, heating, lighting and plumbing all around.

If there is a boiler or electricity meter, you need to think whether you want these moved. Moving these can add thousands of pounds to the cost of the conversion and it is usually recommended to box them in wooden units.

The height of your loft needs to be atleast 2.2m to convert.

Most loft conversions fall under permitted development, which means you do not require a planning permission. Some are more complicated. The easiest way is to check similar houses with loft conversions on your street

This depends on the type of conversion you require. There are 4 main types: Dormer, hip to gable, mansard and rooflight

We have been in the trade for almost a decade and have an experienced team to attend your needs.

Construction is a dynamic industry meaning that unforeseen circumstances can arise at any stage during the process. We guarantee to finish the work no matter what comes in the way.

The satisfaction of a client when they see the new changes to their property.

We believe in high quality finishing and a lot of construction cow-boys out there set the foundations, comply with the basic regulations and then give up on the finishing and the finishing is what everyone else sees, which we believe is an important element. That's why Mason & Stone was born, to give you an aesthetically pleasing product.

Firstly we are a family operated company, which gives you more personal to your needs experience.

Our business conduct is very transparent, you will be given the costs first hand.

We also have trade agreements in place so that you do not pay retail prices for the supply of materials, which can save you a huge deal.

We have our own Architectural Technologist who will transfer your visions into drawings. Keeping everything in-house will guarantee a smooth transition and completion of the work. However if you do have your own architect that you would like to use, we are completely fine with that and will work with them to achieve your vision.


All types of extensions to the property. E.g. Rear Extension and Side Extension

We provide roof conversions into habitable space. We can help you with dormer, hip-to-gable, rooflight and mansard conversions.

We also provide garage conversions into habitable space.

All types of property refurbishment, internal and external works to high standards.

We can build small construction needs such as:

Outhouses, garages, sheds, porches, gated fencing and driveways.

All electrical services including whole house rewiring. We provide certificates for the works done.