Bespoke Design & Planning

Over 12 Years of Experience

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Full Cost Transparency & Project Management

Insurance Backed Warranty

Double your living space with Victorian terrace L-shaped loft conversion

Save the limited garden space of a terraced home by building upwards. Period homes benefit from sizable lofts that give you the head height to create livable space. Add more than just a bedroom or a bathroom by utilising the L-shaped dormer. Victorian terrace L-shaped loft conversion is perfect for a mid-terrace property as well. 

This type of loft conversion involves joining two dormers at a right angle, wrapped around the side and rear of the property. One dormer sits on the main roof, while the other sits on the rear outrigger. Victorian and Edwardian terraced properties are ideal for this conversion. These properties already have a rear outrigger where the kitchen and bathroom are. Most L-shaped dormer conversions fall under permitted development rights and do not require planning permission. The maximum volume of enlargement allowed for a terraced home is 40 cubic metres. 

One of the most valuable additions to a terraced home is a master bedroom with an en suite bathroom. It means you are extending livable space without losing precious garden space. A rear extension, which increases floor space on the ground floor of a terraced house, uses the limited outdoor space available, especially in a mid-terrace.

A flat roof dormer ensures you get more head height and floor space within the 40 cubic metre limit. You can incorporate a Juliet balcony and Velux windows. You can also use a pod room for the rear dormer or a roof terrace to increase outdoor space, especially if you already have a ground-floor extension.

The total cost of an L-shaped conversion varies based on the size, materials used, and design features. Good Design & Build offers affordable options well within high standards.

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

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

Creating large amounts of space in semi-detached and mid-terrace homes requires a thorough and detailed understanding of planning guidelines. Planning experts ensure designs and plans adhere to recommended guidelines. Having structural engineers on the team ensures your new space adheres to building regulations. Professional architects and builders can help you maximise space with design ideas and build techniques. High-quality conversions with aesthetic and functional appeal increase the value of your home. Poor construction, unpolished features, and unlawful extensions can diminish property value.

Our resident architects and skilled builders create harmonious spaces that complement each home with bespoke designs. Every design ticks the boxes to reflect your style, personality, and needs. We use the latest 3D technology to simulate our creation. It helps you better visualise your loft conversion and understand each design component. 50% of our efforts get invested in the design process to ensure the finished product is a space-maximising, natural-light-filled, contemporary, functional, and creative space.

We prepare planning applications per requirement. We also assist with party wall agreements, Thames Water build-over agreements, submitting building control applications, and method statements. Our team works with local authorities and third-party suppliers. The finished product, fixtures, and fittings carry insurance-backed warranty. We provide consultation, architectural survey, and loft bathroom tiling for upto 15sqm free of charge. Our prices are fully transparent with no hidden costs. We offer full project management. You also get a price match for like-for-like quotes. From concept to completion, we ensure perfection at every stage of the creation.

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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Featured Projects

Interior View - Sellons Ave Project

Harlesden

Sellons Ave NW10 4HJ

The project included creating a master bedroom in the loft with an adjoining terrace.

Learn more

Fulham

Orbain Road SW6 7JZ

This project was completed in 2023 and the approximate budget was £101,000.

Learn more
Kitchen Extension in East Sheen

Lambeth

Hetherington Road SW4

We completed this stunning project for our client Angus in Lambeth.

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Teddington

Station Road SW4 7PA

We completed this exciting project for our clients on Station Road, a quaint residential area in the heart of Teddington.

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Leyton

Windsor Road E10

We completed this kitchen extension on Windsor Road, a charming residential street nestled in the heart of Leyton.

Learn more

Areas we cover

Chiswick

Acton

Balham

Battersea

Chelsea

Clapham

Croydon

Ealing

Earlsfield

Elmbridge

Epsom

Fulham

Hammersmith

Hampton

Hillingdon

Hounslow

Kensington

Kew

Maida Vale

Mortlake

Putney

Richmond

Sheen

Surrey

Teddington

Tooting

Twickenham

Wandsworth

West London

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

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