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Your planning and design guide to smart loft conversions Elmbridge

Don't move. Extend in style

We can save you the hassle that comes with moving not to mention the heavy stamp duty! Adding an extra loft bedroom or enlarging the living kitchen dining space on ground floor is an economical way of transforming your home to suit growing needs. The projects can range from £40-100K depending on your requirements and can be completed within 8-16 weeks.

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Residential life in suburban London is one with numerous benefits, and Elmbridge is no different. As part of Surrey, it has earned its place as one of the best places to live in Britain. A home in Elmbridge is an investment for a future in a coveted part of London. And, making your home similarly attractive to you and your family, and any potential buyers in the future largely depends on space. Helping you to maximise home space is our job. Loft conversions Elmbridge are the most effective solution to the extra space you need. By utilising the idle space in your roof, you are saving money on costly extensions or house moves.

Under permitted development rights, loft conversions are exempt from planning permission requirements. However, for no-restriction building, these conditions have to be met;

You are not living in a listed building or a conservation area.
There is a minimum of 2.2.m head height in your loft.
The new structure adheres to all building regulations.
The proposed conversion does not exceed 40 cubic metres of roof space in terraced houses or 50 cubic metres in the semi-detached or detached homes.
Materials used for building are similar in appearance to the rest of the house.

Dormer – it is perhaps the single most popular design used for loft conversions. The basic design is the flat roof dormer, followed by the shed roof dormer, similar in appearance. These emerge out of an existing pitched roof with walls rising 90 degrees in angle.

L-shaped dormer – these are two dormers sitting at a right angle to each other, forming an L shape. The larger dormer gets built on to the main roof and the smaller at the rear. They are perfect for Victorian and semi-detached properties.

Mansard – they are the largest type of conversion and require heavy building work, and the roof structure gets altered dramatically. Built on to an entire plane of the roof with ample head height and floor space, these can accommodate a small apartment.

Rooflight – the simplest and the most cost-effective loft conversion in the books, this is also one of the most energy-efficient ones. No structural changes happen during construction, and only the loft roof changes with the addition of Velux windows.

The cost varies with the type of loft conversion you choose and the size of your property. We estimate costs per square metre, so you have a much clearer picture of the budget you need to set aside.

Room in the roof conversion (basic) – £1,150 – £1,350 per square metre

Dormer loft extension – £1,250 – £1,450 per square metre

Mansard extension – £1,500 – £2,500 per square metre

Hip-to-gable extension – £1,500 – £2,500 per square metre

Change of roof structure – £1,350 – £1,550 per square metre

We are a design-led loft conversion company. Our in-house architects draw up bespoke designs to match all your requirements and to complement your home’s architecture. We also apply for planning permission on your behalf and assist with Party Wall Agreements and Thames Build Over Agreement.

Book your free consultation to kickstart your dream project.

How we deliver projects

Our process is simple and divided into two distinct phases with separate contracts: Design and Build. As a client you only commit to one phase at a time depending on what stage of the process you are in. Each phase consists of three stages as described below.

1. Design

This is the kick-off point for your project. We carry out a complete architectural measured survey of the property. This allows us to create accurate CAD design drawings. This is followed by a design meeting to start discussing your ideas in more detail.

2. Planning

At this stage we finalise the designs with you and start preparing planning applications as needed. We place a high priority on ensuring that plans, designs and schedules are all based on a thorough and detailed understanding of planning guidelines. We co-ordinate with local authorities until the decision is made, and the planning approval is secured.

3. Technical

Once the planning consent is secured, we translate the design drawings into more detailed technical drawings for the purposes of building control and construction. This also includes specifications and structural calculations. At this stage, we will also submit to you our ‘no obligation’ quote for the build phase.

4. Pre-build

90% of our clients decide to stick with us after the design phase is completed. Once the build contract is signed, we kick off the process by making sure all the pre-build processes are complete. These include assistance with party wall agreements, Thames Water build over agreement, submitting building control application, and preparing method statements etc as needed. This stage ends with a pre-start meeting with your foreman before the actual build begins.

5. Build

One of our foremen will be dedicated to your project and will be on-site to manage everyday works. Our project managers will be overseeing the works to make sure they are completed to high standards, within your budget and on time. Throughout the process we will keep you updated with the progress and coordinate the works with third parties such as kitchen or flooring suppliers. We will also advise and guide you to choose any suppliers if needed.

6. Handover

As the build draws to finish, we will help to iron out any ‘snags’ to make sure everything is completed to your satisfaction. We will put together all necessary certificates such as gas, electricity and building control completion along with warranties for glazing, boiler etc. At the final completion meeting, we will hand you these documents, together with the keys to your house. Needless to say, you can contact us any time after this, if you want us to look at something.


This is the kick-off point for your project. We carry out a complete architectural measured survey of the property. This allows us to create accurate CAD design drawings. This is followed by a design meeting to start discussing your ideas in more detail.

At this stage we finalise the designs with you and start preparing planning applications as needed. We place a high priority on ensuring that plans, designs and schedules are all based on a thorough and detailed understanding of planning guidelines. We co-ordinate with local authorities until the decision is made, and the planning approval is secured.

Once the planning consent is secured, we translate the design drawings into more detailed technical drawings for the purposes of building control and construction. This also includes specifications and structural calculations. At this stage, we will also submit to you our ‘no obligation’ quote for the build phase.

90% of our clients decide to stick with us after the design phase is completed. Once the build contract is signed, we kick off the process by making sure all the pre-build processes are complete. These include assistance with party wall agreements, Thames Water build over agreement, submitting building control application, and preparing method statements etc as needed. This stage ends with a pre-start meeting with your foreman before the actual build begins.

One of our foremen will be dedicated to your project and will be on-site to manage everyday works. Our project managers will be overseeing the works to make sure they are completed to high standards, within your budget and on time. Throughout the process we will keep you updated with the progress and coordinate the works with third parties such as kitchen or flooring suppliers. We will also advise and guide you to choose any suppliers if needed.

As the build draws to finish, we will help to iron out any ‘snags’ to make sure everything is completed to your satisfaction. We will put together all necessary certificates such as gas, electricity and building control completion along with warranties for glazing, boiler etc. At the final completion meeting, we will hand you these documents, together with the keys to your house. Needless to say, you can contact us any time after this, if you want us to look at something.

What Our Clients Say

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Build a Quote!

Let's get started with building your own bespoke quote for your dream extension. Tell us as much in detail as possible to get most accurate price.

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Build a Quote!

Let's get started with building your own bespoke quote for your dream extension. Tell us as much in detail as possible to get most accurate price.

Get Started