Loft Conversions Harrow

Rooflight Conversion – also known as Velux conversion, it is the simplest and most cost-effective conversion type. It doesn’t involve structural changes to the roof. Instead, adding roof windows, such as Velux windows, to the existing roof slope brings in natural light, visibility, and ventilation. 

Dormer Conversion – this type of extension extends the existing roof upwards to create additional headroom. It typically involves constructing a box-shaped extension that protrudes vertically from the roof. Dormer conversions provide more usable space compared to roof light conversions and allow for the inclusion of dormer windows for natural light. A rear dormer loft conversion is the most common dormer conversion. 

Hip-to-Gable Conversion – suitable for properties with hipped roofs, it creates space by extending the gable wall with a vertical wall instead of a sloping one. This conversion increases the internal space and allows for a larger loft area.

Mansard Conversion – a Mansard loft conversion involves significant structural changes to the roof shape to create a nearly vertical wall. The roof gets a flat top and sloping sides. Mansard conversions often provide the most additional space and can accommodate multiple rooms, making them popular in urban areas.

L-shaped conversion – when two dormers get joined together, an L-shaped dormer forms. Usually, one dormer sits on the rear outrigger and the other on the main roof. This loft conversion type is a great way to maximise space in Victorian properties where there is an existing wing at the rear, known as a two-storey outrigger. They are ideal for mid-terrace properties.

The cost varies depending on the size and design features of the loft conversion. Here is the average loft conversion cost for each type. 

Room in the roof conversion (basic) –  £35,000 

Dormer loft extension – £50,000 

Mansard extension – £60,000 – £65,000

Hip-to-gable extension – £65,000

L-shaped extension – £65,000 – £75,000

A DIY project can seriously devalue a property’s price. A professional design, build, and finish are essential for your Harrow loft conversion to become a valued addition. Loft conversions require adherence to building regulations. Correct assessments are necessary to determine whether your plans are within permitted development rights. To safeguard the structural integrity of your home and the new addition, you will need the expertise of a structural engineer. A loft conversion company will look into all aspects that need consideration, and they will also help you create elegant spaces that seamlessly blend into existing architecture.

Whether your Harrow loft space is small or large, our architects innovate space with smart designs. All our projects begin with a bespoke design phase. Our plans reflect your personal preference, lifestyle, and needs. Using the latest technology, we create 3D models of your plans to give you a better visualisation experience. Don’t worry! The design phase is only one contract. You only sign the building contract if you are happy to bring the designs to life. We never tie down our clients with long-haul contracts. 

We are also loft conversion specialists for Victorian and 1930s properties. Our experts know period architecture like the back of their hands. From planning permission to method statements, we undertake all the pesky paperwork. We assist with party wall agreements and submit building control applications. You will receive project management from the start to the end of your bespoke loft conversion.

Design features, materials, and square footage are the factors that influence the cost of a conversion. More simplistic designs and smaller floor areas tend to have a lower cost. However, each property has unique advantages from one type of conversion over the others. Choosing the best design that maximises space and value offers a better return on investment.