All you need to know about dormer loft conversions and windows, including costs of installation, materials, labour and time frames.
If you are thinking about a loft conversion to provide some extra accommodation for you and your family, then this could also help your home should achieve a better price when you come to sell, so provided you get the renovation done properly, a loft conversion is a great idea as it offers the additional space you need and you will likely recoup the entire cost of the project when you come to sell. However, like many areas of life, cutting costs or rushing in without the proper research or advice, can give you major headaches - act in haste, regret at your leisure. It's important to take some time to research loft conversion costs and the types available. The type of loft conversion you decide on will depend on a number of factors, not least of which is your budget. Plus, there's also the question of whether or not the space or type of roof is suitable and whether you're likely to get any necessary planning permission.
A loft conversion is a major job and beyond the scope of the typical DIY enthusiast. You will need a builder to construct the walls and install insulation and soundproofing. A glazier for the new windows, an electrician for lighting and new sockets for electrical equipment, and a plumber for additional radiators and perhaps to fit a bigger boiler to cope with extra heating demands. A joiner may be required for new ceiling joists and a plasterer will be needed for the new walls. A painter and decorator will also come in handy though this is one part of the loft conversion which most of us can tackle to save some cash! You should choose tradesmen/companies which are listed on the government's Registered Competent Person Scheme so they can give you a BS7671 certificate which complies with Building Regulations. Whether or not you need your local authority planning department approval depends on the type of conversion and if your home is listed in a conservation area.
The most popular type of loft conversion in the UK is the traditional flat roof dormer conversion. As well as being the most popular, this is the cheapest type of dormer conversion to build, while offering the largest amount of additional living space. A dormer conversion can also often be possible even in lofts with minimal headroom. A flat-roofed dormer conversion is relatively inexpensive to install and offers a versatile space in all type of properties whether a Victorian terrace, post-war semi or even a modern detached home.
The main types of loft conversion are Velux, Dormer, and mansard. Velux conversions are the least expensive and typically cost in the region of £20,000. Dormer is the most common type of loft extension and entails a small flat-roofed extension with a window. Typically, a dormer loft conversion will cost in the region of £30,000. A Mansard loft conversion is the most extensive and means replacing one entire side of the roof to form a whole new storey. The is a major renovation and will involve planning permission. Typical costs are around £50,000. But this article will simply deal with the most common type of loft conversion in the UK, the dormer conversion.
Due to the long term nature of the work being completed, the cost of labour will be higher than usual, but may well charge a lower daily rate due to the longer timescales involved. For an example, a discounted daily rate could be around £120 - for 5 workdays each week for 5 weeks (for a small dormer installation) - this could still cost around £3000, for the time and labour alone.
Depending on the type of installation that is chosen and other customisations (roof type, en-suite conversion, etc) can change the cost accordindly. Usually due to the materials required and the additional time/labour that is required for the tradespersons to complete these additions.
Below are some estimated costs of a dormer loft conversion.
|Job Description||Avg. Cost||Duration|
|Fit a small flat-roofed dormer with uPVC window||£4000||5 Weeks Approx.|
|As above - with a pitched roof||£5000||5 Weeks Approx.|
|Typical double dormer full loft conversion||£30,000||8 Weeks Approx.|
|Large double bedroom dormer conversion with en-suite||£40,000||8-10 Weeks Approx.|
Individual costs of a small dormer loft conversion (flat-roofed) - Total Cost: £4000