Owner-led loft conversions across Rayleigh, Hockley and Hullbridge. No deposit on the build, based ten minutes away in Benfleet, and you deal with Chris from survey to sign-off.
A Velux conversion on a loft that already has the height starts from around £28,000. All figures include VAT, and they are for a finished, signed-off conversion, not a starting price that climbs once the work begins.
I'm Chris. I run Fox Conversions from Benfleet, ten minutes from Rayleigh, and we've been converting lofts round here for over 15 years, trading since 2012 and as Fox Conversions Ltd since 2014. I do the survey myself, I sort the drawings and building control, and I'm on site through the build until it's signed off. The figures on this page come from jobs we've actually done, not a price list. Rayleigh sits between our base and the coast, where we also cover loft conversions in Southend.
Rayleigh is mostly 1930s semis and bungalows, with the newer estates out towards Hockley and Hullbridge. The gap between the two figures isn't about size. It's about structure.
A semi
A standard Rayleigh semi already has a roof with usable volume under it. We work with the existing rafters, add steel where the calculations need it, and build the new floor into a structure broadly meant to carry weight. A rear dormer gives you a bedroom and an en-suite.
A bungalow
Bungalows are the big one round here. The roof usually needs the hip taken out to a gable as well as a dormer, and the ground floor ceiling joists were never sized to carry a bedroom, so the new floor has to be built up to take the load. That's where the cost sits, and it's what the Benfleet job below was.
The exception is a chalet bungalow. It already has rooms in the roof and usable height, so it converts closer to semi money than bungalow money.

Rear dormer
The most common choice on Rayleigh semis. Full head height across the back of the house, with room for a bedroom and an en-suite.

Hip-to-gable
For semis and bungalows with a sloping side roof, which is most of Rayleigh. The sloping side is built up into a vertical gable wall, usually combined with a rear dormer, as at Chestfield Avenue below.

Velux
Roof windows fitted into the existing slope. The lower-cost option, but only if the loft already has good height.
Roof type
A hipped roof usually needs more structural work than a straight gable end. Hip-to-gable adds cost, but it often adds the most usable space.
Head height
Where head height is tight, we can often lower the ceiling below to gain it. Raising the ridge usually isn't an option, because it takes the roof above its existing height, which permitted development doesn't allow. I measure this at the survey because it's the biggest single factor in how straightforward a job is.
A bathroom or en-suite
Plumbing, tiling and waterproofing add to the figure.
Finish
A plastered shell costs less than a fully fitted room with joinery and flooring.
These figures assume the job is done properly, the structure is right, and it's signed off. If a quote comes in a long way under them, ask what's been left out. The structural work on a bungalow especially isn't something you want done cheaply.
The figures above are for the whole job, not just the build:
You pay in stages as the work goes up. No large deposit up front.
Most loft conversions fall under permitted development, so you won't need full planning permission. You will need to apply if your house is in a conservation area, if the design goes beyond the permitted limits, or if earlier extensions have used up your permitted development allowance. Rayleigh town centre around the High Street and the Mount is a conservation area, and I check your address before I quote.
Rayleigh comes under Rochford District Council for planning, and we handle the application if one is needed.
Every conversion goes through building control, whatever the planning position. That's the part that signs off the structure and fire safety, and we manage it from submission to the final certificate.
A recent job nearby
We haven't put a Rayleigh job on the site yet, so here's the nearest one, ten minutes down the road. A semi-detached bungalow on Chestfield Avenue in Benfleet, the same sort of house as half of Rayleigh. The family wanted two bedrooms and a bathroom in the roof rather than move.
Before: a bungalow with a hipped roof and a loft full of boxes. During: steels spliced in the roof, the hip built up to a gable, the dormer framed and the new floor built. After: two bedrooms and a bathroom upstairs, signed off by building control, and a bungalow that still looks like a bungalow from the road.
Photos below. Tap any photo to see it full size.

We work across Essex. See every area on our Loft Conversions Essex page.
Velux from £28,000, rear dormer from £45,000, hip to gable from £55,000, all including VAT, drawings, structural calculations and building control. Bungalows sit at the hip to gable figure because the roof is restructured and the floor built up. Your fixed price comes after the free survey.
Usually not. Most loft conversions are permitted development. The town centre conservation area and houses that have already been extended are the exceptions. I check your address at the survey, and we handle any application with Rochford District Council.
Yes, and it's the job we do most round here. The hip usually comes out to a gable, a dormer goes across the back, and the floor is built up to carry bedrooms. The Benfleet bungalow above is exactly that, and it still looks like a bungalow from the road.
The build itself typically takes six to eight weeks, a little longer for a bungalow with two rooms and a bathroom. Before that, allow time for drawings, building control and any party wall notices. I run one job at a time, so there are no weeks where nobody turns up.
Yes, across the whole area, including Hockley, Hullbridge, Hawkwell, Rochford, Eastwood and Thundersley.
The survey is free and takes about 45 minutes. I'll look at the roof, check the head height, tell you honestly what's achievable, and follow up with a fixed written quote. No obligation.
Call or WhatsApp Chris: 07441 343232
contact@foxconversions.com
Also see:
Loft Conversions Southend, Loft Conversions Leigh-on-Sea
Fox Conversions Ltd
Specialists in high-end home transformations for over 15 years.
Office: 9 Dorothy Gardens, Benfleet, Essex, SS7 3AD Phone: 07441 343232
Email: contact@foxconversions.com
Registered in England & Wales: Company No. 09270847