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Home loft conversion considerations

Converting your existing loft space can be the most cost-effective way to create an extra room, or even an extra storey, in your house. This article covers some of the options for roof types, stairs, and roof lights.

Make use of all the space in your home

Do you have a spacious loft area that is largely forgotten and under-used? If you already have a fair amount of room then a home loft conversion can be the most cost-effective way to create additional accommodation.

You may even wish to consider adding an en-suite bathroom if you have enough room. But your loft conversion doesn’t have to only be a bedroom; it could be an office, music room, exercise studio or teenage hang-out den.

In fact, it can be whatever you want it to be. By working with an experienced designer, they can look at the space you have and work with you to decide how best to utilise it.

Things to consider when planning your loft conversion

There are three main things to consider when planning a loft conversion: the amount of clear head room, whether the existing floor will require strengthening, and whether the existing roof insulation will need upgrading.

Depending on the pitch of your existing roof, you may be restricted on the amount of usable floor space you have in the loft due to head height. You can increase the usable space by adding a roof dormer or changing the shape of your roof (see roof sections below).

The existing loft floor will most likely only be designed for storage; therefore most loft conversions require new floor joists to strength the floor. The existing roof may not have any insulation (most loft spaces have Rockwool insulation at loft floor level). The existing roof will therefore need to be upgraded with insulation.

Roof sections

There are several types of roof style and shape that you may wish to consider:

  • Pitched-roof dormer: Pitched roof dormers can be used to increase the usable space within a single room in a loft conversion.
  • Flat-roof dormer: Flat roof dormers are a better choice for maximising usable space. They can be stretched along the full length of a roof. There are many options for the external finish of the dormer walls; these include vertically hung tiles and timber cladding.
  • Hip-to-gable roof conversion: A hip-to-gable roof conversion can provide more usable floor space for a loft conversion. The existing roof ‘hip’ is extended into a ‘gable’. This conversion also provides a better roof shape to build a dormer, further increasing the usable floor space in the loft.

We will be able to advise upon which is the most suitable for your particular loft. At the same time, we will work with your budget, taking into account how the room is configured, where the windows are placed and the current energy efficiency.

Potential costs

Our chart will give you some idea of costs. The first column is for London & the South East and the second for the rest of the UK:

Description London and South East Rest of the UK
Loft conversion with roof lights (Based on 4 x 5m floor size with 2 roof lights) £22000 – £25000 £20000 – £24000
Loft conversion with roof lights (Based on 6 x 5m floor size with 4 roof lights) £31000 – £35000 £28000 – £33000
Loft conversion with dormer (Based on 4 x 5m floor size with 1 roof dormer and 1 roof light) £33000 – £36000 £30000 – £34000
Loft conversion with dormer (Based on 6 x 5m floor size with 1 roof dormer and 1 roof light) £42000 – £46000 £40000 – £44000
Hip to Gable extension £30000 – £45000 £25000 – £40000

Checking out your existing loft

Your loft will need a minimum head height of 2.3m. The pitch of the roof, water tanks and placement of chimneys will also need to be considered.

If your roof height is below this, other options may work such as replacing sections of the roof, but the cost would be more and planning permission would then be required. Alternatively, we may suggest building a modular conversion and then installing the pre-fabricated units on site later.

Getting the design right

Don’t try and make your loft something it isn’t. Take advantage of its shape, nooks and crannies and go with the flow. We will do this naturally, maybe suggesting two smaller rooms rather than one large one. If beams are retained, showing off the natural wood can become a design feature. Think about the layout, particularly if you are including a bathroom.

Placing the stairs is also crucial to the design in order to maximise space, as is putting the door at the top or the bottom. We will be able to produce drawings that can be given to builders in order for them to place tenders. If a structural design is required, this can be discussed during the initial stages.

Maximise the light

Going with lighter colours internally will maximise the light and space. The size and position of your windows is also a crucial part of the design. If you want to end up with a light room, the glazing should account for about 20% of the roof area.

Where the windows are placed will depend upon the shape of the loft. If it is long and narrow, windows may be spaced along its length. A smaller deeper room may just need one larger window. Windows can be top-hung or come with a centre-pivot. If out of reach, rods or electronic controls can be used to operate them.

Shower or bathroom

The dimensions may be unusual and the overhead beams bulky, but you may still be able to include a bathroom or shower. Baths don’t need a minimum amount of headroom and a free-standing bath can look incredible.

Showers will need more headroom so we will advise on which to go for. Extractor fans may be required if the windows don’t give sufficient ventilation. Think of using opaque glass panels to a divide bathroom from bedroom/other space.

How to use your space

For those that work from home, an office in the loft can be a dream come true! Imagine the natural light and views. Plan it well with us and watch your productivity shoot up! Think about siting of desks and computers and how you will avoid on-screen glare, such as adding blinds. Alternatively, you may wish to turn the loft into a teenage get-away room.

They will certainly appreciate their own space and when things get noisy; you can close the stairs door and leave them to have fun! Let your imagination run free. Have you always wanted a home-library, kitted out with custom-made bookshelves? Add a chair or two, place in front of the windows and you have a space where everyone will want to retreat to. The options on how to use your loft space really are endless.

Add plenty of storage

With all of that eaves space to play with, there should be no shortage of storage space. Talk to us about building shelves, recesses or cupboards into the eaves. Not only does this look good but it is a super way of making use of otherwise under-utilised space. This can be done in the bathroom also, adding storage for towels, toiletries and cosmetic items.

We will not see the eaves space as a problem but instead we will embrace those odd shapes, using them to his benefit when laying out the plans. Where the roof slants, custom-made cupboards can be built in, not only providing innovative storage but maximising the whole of the space.

Get in touch with CR Design Services to start your loft conversion project

We can help you plan and design your next project. We prepare planning application drawings, building control packages, and structural design calculations for all types of house extension, renovation and self-build projects. Contact us today for further information and to request a quotation.

Start a project today

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MMA
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Matt Ginger
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After doing our research and speaking with a few different companies, we decided to go with CR Design Services. The ask was to redesign the downstairs space in our Victorian Terrace house. They understood the brief so quickly and challenged us on design options, this was very welcome- saving us money in some areas but telling us to spend it in others. To make sure you get the best end result. We can’t recommend this company enough, the quality of the work and the attention to detail is fantastic. They are also impressive on responding to queries, either the day of or 1 day after - due to the nature of work, you will have a lot of queries. So having a business that actions them so quickly is great. A big thank you to Asal, Chris and the team. We will be using you in the future. Thanks
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johann crichton
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Chris was fantastic when I needed a structural plan drawn up for my loft. So helpful and so easy to deal with going out of his way to help and affordable prices . I couldn’t fault his service in anyway and highly recommended .
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ELAINE SNEDDON
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Excellent experience with CR design - I can 100% recommend their services and would definitely use them again. They helped me navigate the confusing world of planning permission with listed buildings to acheive a successful outcome.
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Great company to deal with!!! Excellent , professional services done in accordance with contract in timely manner. Very polite staff, always keen to help. For hassle-free design services, support for the council's Planning Permission and Building Regulations applications I strongly recommend CR Design Services. I would definitely used them again.
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David Henness
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Used CR Design to design a renovation for a bungalow. The firm was very professional. They listened to our ideas and were able to provide a great design as well as help with building regulations. A great service that I would certainly recommend.
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Cameron Stanwick
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10/10 service - would not recommend any other architecture company to this degree. Approached them with 3 weeks notice after being with another architect firm that said the job couldn’t be done / wouldn’t be approved. CR Designs took on the job, drew the plans to what I needed and submitted them to my planning officer. Over the moon to say the plans were granted after a long 6 months of initially submitting my application - thank you so much!
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I had a project that was probably quite awkward for the team due to the numerous changes requested. Despite this, the team was very supportive and produced high-quality work.
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Elizabeth Every
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We needed a revised plan drawn at short notice during lockdown in the middle of a building project. Laura was able to respond quickly, quoted a fixed price, liaised with us to get the information accurate and completed our plans within three weeks. We have now received planning permission and are able to get on with minimum delay. Thank you for your reliable, fast and professional service. We have just received approval for a retrospective plan to complete the above project two years further on and have received the same professional and thoughtfull service from Caroline and her team. Highly recommended.
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Most professional organisation and worked to tight timelines, everyone I dealt with were knowledgeable, delivered a high quality service and their work was to an excellent standard. They made excellent suggestions - the team led by Chris with Asal and Caroline were a pleasure to work with. They took my architects high level drawings and created comprehensive building plans to the eco passive house standards that we required. Exemplary!