All you need to know about having your loft converted including costs of materials, costs of labour and time frames.
There are several different types of loft conversion, but the three most popular types in the UK are: Roof windows but no dormer, roof windows with dormer, and dormers without roof windows. A roof window loft conversion with no dormer offers good lighting but compromises on size/space, they are however the cheapest and easiest conversion.
Roof windows and dormer conversions offer extra space and headroom, plus the extra light through roof windows. Whereas a dormer conversion but with no roof windows offers maximum usable space less light. Roof windows allow lots of extra natural light into the loft space, but dormers protrude from the roof and create additional space and headroom. The cost of a loft conversion with a dormer is considerably higher than a loft conversion with only roof windows, but you may have to install a dormer to meet building regulations for headroom, depending on the location of the staircase.
It makes sense to carry out other related jobs that may need doing at same time, such as installing a loft ladder and hatch, or a full staircase. Also don't forget about the existing roofing which should be in good order with no rot or missing/damaged roof tiles.
The most common reason for converting a loft is to provide an additional bedroom double bedroom, often with an en-suite bathroom. The work required would include all professional fees (architects, structural engineer, planning permission, building control etc), hire of scaffolding, all materials required (timber, steel joists, plasterboard, skirting etc), construction and roofing, staircase, fire escape, windows, electrics, heating, plumbing, insulation, flooring, decorating and skip hire.
As you can see it's a big list, involving a lot of work and materials, and therefore cost. If you are on a tight budget and want to maximize the potential added value on a loft conversion, then try and avoid dormers, bathrooms and shower units - these are the most expensive part of any loft conversion.
Using a reputable contractor and getting professional advice will greatly reduce the chances of any future problems with a loft conversion, however using a cowboy contractor that promises a good job done cheaply can end up costing an absolute fortune, in addition to being dangerous. When considering expensive structural alterations to your home, do not decide simply on price! There are some other factors which may increase the cost, for example if you have a water tank which will need to be moved along with the required plumbing work.
This is one of those jobs where the cost can vary considerably depending on the size of your loft, whether or not you want a dormer, what you want your loft to be (bedroom or bathroom), whether your house is terraced, semi or detached, whether your roof is gable, hip, mansard, trussed, traditional, etc, your location and the company you choose. Prices for loft conversions can range from £15,000 to £45,000.
Most loft conversion specialists charge around £300-£500 per day with 2-4 tradesmen working at the same time. You can expect the job to take anywhere from 4-8 weeks to complete depending upon the complexity.
Here are a few average costs for hiring a company to carry out a loft conversion. Please note that these are average prices. If you're house is around the London area, expect to add £10,000-£15,000 to the price.
|Conversion Type||Avg. Cost||Duration|
|Bedroom with Velux Windows||£12,500-£20,000||3-4 weeks|
|Bedroom with Ensuite & Velux Windows||£17,500-£25,000||4-5 weeks|
|Bedroom with Dormer & Velux Windows||£20,000-£25,000||5-6 weeks|
|Bedroom with Ensuite with Dormer & Velux Windows||£25,000-£30,000||6-7 weeks|
Individual costs for hiring a loft conversion company to install a double bedroom with dormer and 2 velux windows - Total Cost: £25000