How much value can a Loft Conversion in Welwyn Garden City add in 2024?

A loft conversion in Welwyn Garden City is a fantastic opportunity to boost the value of your home without the need to relocate. Did you know that converting your loft in Welwyn Garden City can add as much as 25% in value to the property, which ensures a profitable investment in the long run. In some suburbs of Welwyn Garden City, where space is limited, loft conversions have become the preferred choice for families seeking to enhance their homes. Not only is it a more cost-effective alternative to moving, but it also provides the added benefit of expanding your living space.

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Custom Design Loft

Bespoke loft conversions in Welwyn Garden City

Loft Conversion London specialise in high-quality custom Loft Conversions across London and the home counties. We have built numerous bespoke loft conversions in Welwyn Garden City on popular roads such as Parkway, Valley Road, High Oaks Road, Sherrardspark Road which are fully tailored to the clients personal requirements and preferences. 


Types Of Lofts

Welwyn Garden City Loft Conversions

We offer a range of Loft Conversion types in Welwyn Garden City, which include, dormer, mansard, hip to gable, L-shaped and velux loft conversions. Our team of builders will transform your house, giving you more living space and thereby increasing the value of your property.

Loft Ideas

Our latest Loft Conversions in Welwyn Garden City

Browse through our latest loft conversions and extensions in Welwyn Garden City to get an idea of what our specialist Loft Conversion team can build for you.

Loft Conversion Process

Our step by step process for Loft Conversion in Welwyn Garden City

We try to keep the Loft Conversion process as simple as possible from conception to completion, always keeping you informed and involved in every step. Our process includes an initial survey and design followed by architectural drawings and structural calculations. Thereafter, we will quote based on the drawings. Once happy with our quote, our architects apply for planning permission and commence your building work and finally the completion of your new loft conversion. Our team is ready to discuss any aspect of the project in more detail at all times.


Creating More Space For You

Whether your family is growing, renting out a room in your property, or simply want a new study or office, a loft conversion is an ideal solution to maximise space in your house. This is a cost-effective alternative to moving and will increase the value of your property when you decide to sell in the future. No matter the project size, we will build you a loft that reflects your style and meets your lifestyle’s needs.


What can we do for your Property in Welwyn Garden City?

If you would like to discuss the ways in which a Loft Conversion could enhance your Welwyn Garden City home, call us on 020 3951 8426 or email to ask us any questions. For a free site survey and design consultation please fill out the form on the right and our team will get back to you as quickly as possible.

Loft Conversion Welwyn Garden City

Breif Guide to Welwyn Garden City

Welwyn Garden City is a town located in Hertfordshire, England about 20 miles north of London. It is the second garden city in the country and one of the first new towns. Unique among English towns, it is both a garden city and a new town and is an excellent example of the planning ideals of the time. The town was named for its beautiful flower beds, and many of the homes are still standing.

Welwyn Garden City was founded by Ebenezer Howard in 1920 and was the second garden city to be built in the United Kingdom. The original concept was to build a new town in the middle of a field, thereby creating a balance between the villages and the cities. The city was intended to provide industry and a pleasant atmosphere for its residents. It is located about 23 miles from London. After World War II, Welwyn became a new town and rapidly grew. According to a 2011 census, the town had a population of 46,812 in the urban area and 48,380 in the built-up area.

Head Height is crucial

When converting a Welwyn Garden City loft, you must have sufficient head height over 30 degrees and a roof pitch of more than 2.2m. The placement of the staircase is critical. Use a steep staircase that does not take up too much floor space, or a narrower one if you do not have the space for one. There are also many options for staircases that maximize the amount of space available. Spiral staircases are an excellent choice, as they can be easily moved between floors.

The first step in designing your loft is to take measurements of your existing rooms in Welwyn Garden City. The height of rooms in your home should be 2.2 metres at the midpoint. While this is not strictly a requirement of building regulations, it does have to do with access and staircases. If the ceiling of the room below the loft is lower than the floor of the loft, you can make a workaround by lowering the ceiling in that room. Taking into consideration the size of the room below, you can make the design of the staircase in the loft look more elegant and stylish.

Is it possible to convert my loft?

Before you do anything else, you must first determine whether your loft is suitable for conversion. Most properties come with permitted development (PD) approval, which means you can proceed with your conversion without seeking planning approval. Living in a conservation area may be more challenging if your roof space isn't tall enough. You can hire a builder, architect, or surveyor to come to your home and inspect it for you, but there are a few things you can do yourself first.

Measure the height of your head. A loft conversion requires a minimum height of 2.2 meters. Victorian houses are often lower than those built after 1930s and may lack proper head height. Consider other factors, such as water tanks and chimney stacks, when planning your Loft conversion to older properties.

How long does it take to convert a loft?

Roof light conversions are usually the quickest to complete, taking four weeks. A dormer conversion can take as little as 7-8 weeks, while a hip-to-gable conversion can take as long as 8-10 weeks. A mansard conversion should take between 10 and 12 weeks to complete. 

The exterior of your home is usually where the work begins. The focus next shifts to the interior of your home, including the flooring, insulation, and stud walls. The final step will be dealing with plastering, electrics, and plumbing.

Types of loft conversion: what's the difference?

Roof light, dormer, hip-to-gable, and mansard are the four primary forms of loft conversions. A variety of criteria, including the type, age, and budget, will influence your decision.

Roof light


A cost-effective choice for first-time purchasers.


Compared to a dormer or mansard conversion, it provides significantly less area.

Roof light conversions are by far the most cost-effective and least disruptive alternative, as they do not require any alterations to the roof's shape or pitch. To make the room usable, it is needed to install skylight windows, install a decent floor, and the addition of a stairway. However, this form of conversion requires sufficient roof space without the need for an expansion.

Dormer Conversion


Most houses with sloping roofs have this option.


Compared to a typical conversion, more structural adjustments are required so that construction can take a long time.

A dormer loft conversion is an addition to a home that protrudes from the roof's slope. Dormers are the most common style of transformation, particularly flat-roof dormers. Dormer conversions are less expensive than mansard or hip-to-gable conversions, but they provide a significant headroom and floor area.

Hip to gable Conversion


It is generally less expensive than extending outwards and more natural-looking compared to a dormer conversion.


Only suitable for houses with a free sloping side roof and more expensive than a dormer conversion.

Hip-to-gable conversions operate by extending the slanted 'hip' roof on the side of your house outwards to create a vertical 'gable' wall, allowing you to expand your internal loft area. Because it requires a free sloping side roof, this conversion style will only work on detached or semi-detached buildings. You can construct on both sides of a detached house with sloping roofs to create a double hip-to-gable expansion that is even roomier.

Mansard conversion


Creates a large amount of new usable space that is ideal for a wide range of properties.


It can be pretty costly, and due to the roof slope change, they don't look very natural.

Mansard roof extensions stretch the length of your roof and change the angle of the roof slope to almost vertical. These are the most expensive conversions, but they provide a large amount of additional space. Most property types, including terraced, semi-detached, and detached houses, are appropriate for mansard conversions.

You can contact us right now if you're looking for a Loft Conversion in Welwyn Garden City or anywhere else in London.


FAQ's about Loft Conversion answered

Do you have a question about Loft Conversions? We're here to help. Contact our team at Loft Conversion London

  • How can I find out if my Loft in Welwyn Garden City can be Converted?

    The minimum height required for a Loft Conversion is 2.2m (from the floor to the highest point in your loft). If you do not have the required height, your ceilings can be lowered on your first floor.

  • How long does a Loft Conversion take to Complete?

    This depends on the size and type of Loft, most loft conversions take around 10-12 weeks. We can give you a more accurate estimation when we see your property.

  • How much does a Loft Conversion in Welwyn Garden City Cost?

    Loft Conversion cost is determined by the size and type of the project, the features you would like, etc. Our architect will help you achieve the best use of your space within your budget. Most Lofts cost between £25,000 and £60,000.

  • Will I need to move out during the Loft Conversion?

    No - it's safe to carry on living in your house. Our team starts from the scaffolding before the stairs go in. We always try to limit the disruption during the construction process.

  • Do I need planning permission for a loft conversion in Welwyn Garden City?

    Loft Conversions usually fall under the permitted development category therefore planning permission is not normally required. There are some exceptions like conservation areas, flats, or listed buildings. Our in-house surveyors can advise further on planning permission. For more info read our Planning Permission blog.

  • What is a party wall agreement and will I need one for a loft conversion?

    A party wall agreement is also known as PWA is required if you own semi-detached or terraced property. In simple words, if you are working within or near your neighbor’s boundary then you will need a party wall agreement in place. Click here for more info.

  • Does a loft conversion add value to my Welwyn Garden City home?

    Yes - it will add from 15% to 25% upwards depending on the size, design, and type of Loft. Read more about adding value here.

  • Will my Loft Conversion be subject to Building regulations?

    Yes, all Loft conversions require building regulation approval from the local authority. These regulations are important to ensure the safety measures are in place and they set a protocol of construction and design to follow.

  • Can I use my own plans?

    Absolutely yes, we will work with you to achieve your dream new living space.

Types of loft conversions


Storage Ideas for your Loft Conversion

How will a custom Loft Conversion make a difference to your Welwyn Garden City home

Save Money on Moving Home

Save Money on Moving Home

Increase Value of Home

Increase Value of Home

Add Something New to your House

Add Something New to your House

Increase your House Living Space

Increase your House Living Space

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