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How to build extra rooms in your home with loft conversions Earlsfield

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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Choose an Earlsfield loft conversion specialist

The laidback and leafy Earlsfield is Wandsworth’s best-kept secret. The suburb is home to a high concentration of Victorian properties. Although the Victorian terraced housing was the mark of good-quality modern city living, its design is over 180 years old. Needs have become unlimited for the average homeowner, and property prices have soared. Loft conversions Earlsfield are not just about creating an extra room or two to accommodate a growing family without having to make the expensive decision of moving. They also provide the comfort of spacious bathrooms, en suites, home offices, or gaming rooms. We are specialists in Victorian and period home improvements, and we know your home’s potential inside out. As a company rooted in intelligent architectural designs, we love exploring ideas and strategies to bring you optimum functionality for the loft space available to you.

Usually, No! Permitted Development rights apply for loft conversions, which means there isn’t a need for planning permission. However, these limitations still apply for your project to go ahead without council approval;

Your house is not on designated land, and it is not listed
The new addition is no larger than 40 cubic metres for terraced homes, and 50 cubic metres for semi-detached and detached homes
The conversion does not extend beyond the plane of the current roof slope at the front of the house facing a highway
Side-facing windows are obscure-glazed and positioned 1.7m above the floor
Other than Hip-to-Gable conversions, all roof extensions need positioning back, as far as possible, at least 20cm from the original eaves
The building material used for the extension must match the existing house in appearance
The loft conversion cannot rise higher than the highest part of the house
There should be no verandas, raised platforms, or balconies

Simply, because a loft conversion isn’t just a job to us, it is our passion. From the sketching of the first draft of the design to the very end when we hand over the keys, our dedication to your project remains constant throughout. Our bespoke designs are unique to every house and client, carefully crafted around your personal needs and your home’s proportions. We offer free consultation and free site visit to help you make up your mind about what type of loft conversion to add. Our quotes are completely transparent, and there are no hidden costs. You also receive easy payment methods. No obligation is required for you to pay for the entire project from the start. The Design phase and the Build phase each have its contract. We take care of all application submissions to reduce your responsibilities considerably. Once we transition to the Build stage, we provide you with a project manager who will oversee every detail for you.

Dormer – the trusty dormer conversion has served the London homes with additional space for decades. Its simplest version is a flat roof style box-shaped structure that affords comfortable head height and floor space. Flat roof and shed roof extensions are the most cost-effective choices. If aesthetics matter more, you can opt for the pitched roof or gable fronted dormers. Dormers are suitable for most types of properties.

Hip-to-Gable – suitable for semi-detached, detached, and end-of-terrace homes, this converts the sloping side of the roof into a gable wall that connects the roof ridge with a new roof. You get more head height and floor space for your attic with this technique. Detached properties that have a roof with two hip ends can have two Hip to Gable conversions.

Mansard – this Parisian inspired design converts an entire plane of your roof to a 72 degrees vertical side with a flat roof. The alteration makes it seem like another storey than an extra room. It is even suitable for mid-terraced properties. You can design a small apartment with the proportions gained by this construction.

Rooflight Conversion – this is the cheapest loft conversion technique. It involves no structural alteration to the roof shape or building out of it. Transformation results from the Velux windows fixed to the roof for natural light, ventilation, and views.

Good Design & Build loft conversion costs are as follows:

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

Get you free initial consultation and site visit with detailed quote by getting in touch with us today.

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