Bespoke loft conversions in Sidcup, designed and built by our own in-house team. One fixed price, a ten-year guarantee, and a free design survey on your doorstep.
Sidcup is mostly 1930s semis, and that is what decides which conversion your roof will take. We have spent over twenty-five years working on exactly this kind of property across London, so we know what these roofs allow before we get the tape measure out.
Sidcup is dominated by interwar semis with hipped roofs, the textbook case for a hip to gable conversion.
Sidcup is textbook hip to gable territory. The interwar semis through DA14 and DA15 were built with hipped roofs and generous side returns, so building the end wall up square is straightforward and usually falls under permitted development.
The one thing worth checking early is the water tank and any purlin running across the space. On a lot of these houses the original roof structure has a mid-span purlin that has to be dealt with structurally before the floor goes in.
Whether you need an extra bedroom, an en-suite or a home office, a loft conversion adds the space without the cost and upheaval of moving out of Sidcup, and it can add up to twenty percent to your property's value.
Given the housing in Sidcup, these are the conversions we build here most often. On your free survey we confirm exactly which one your roof allows.
The most popular conversion in London. A dormer extends out from your sloping roof to add full head height and real floor space, ideal for a terrace or a semi.
Explore dormer conversions →The answer for homes with a sloping, hipped side roof. We build the hip up into a vertical gable wall, squaring off the roof and unlocking a full-size room.
Explore hip to gable conversions →Building the end wall of your home straight up to the roof ridge gives you a tall, square room with real presence, and the height for a striking window.
Explore gable conversions →Where a standard loft falls short on height, reshaping the roofline itself unlocks the headroom and floor space a plain conversion cannot reach.
Explore roofline conversions →Where your roof already has the height, a Velux conversion is the most cost-effective way to gain a bright new room, with roof windows set neatly into the existing slope.
Explore velux conversions →The largest conversion we build. Two dormers combined over the main roof and the rear addition, giving you the space for more than one room.
Explore l-shape conversions →Planning a new build, or want the loft designed in from day one? We build the space in from the start, or convert an existing new-build roof into a proper room.
Explore new build conversions →It depends on the type of conversion and the shape of your roof. A Velux conversion, where the head height already exists, costs less than a full dormer or an L-shape that adds a whole floor of space. Because Sidcup homes are mostly 1930s semis, most conversions here are hip to gable or dormer builds, which sit in the middle to upper part of that range. You can see indicative ranges on our costs page.
What never changes is how we quote. After a free survey we give you one fixed written price for your Sidcup home, with no hidden extras, and you pay in stages as the work is done. See how payments work.
Applications in Sidcup go to the London Borough of Bexley. Many conversions fall under permitted development, but flats, conservation areas and larger designs need full permission. We check what applies to your property on the survey and handle any application for you, along with the structural drawings and building control. Our planning permission guide explains the rules in full.
Five stages, one named project manager, and a written price before anyone lifts a tool.
We visit your Sidcup home, measure up, and tell you honestly what your roof allows.
Drawings, structural calcs and any planning, all handled in-house.
One clear written quote, itemised, with no hidden extras.
Our own team on site and one named project manager, start to finish.
Building control sign-off and your ten-year guarantee in hand.
If you are just outside Sidcup, we most likely cover you too. Just ask.
Book a free, no-obligation design visit. We will tell you what your roof allows, show you what it could look like, and give you a fixed price. No pressure, no jargon.
A short conversation about the house and what you are hoping to do. No sales pitch.
We measure up and tell you honestly what your roof allows, what it would look like, and what it involves.
Itemised, with no hidden extras, and a ten-year written guarantee on the finished work.
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