Dormer Loft Conversions
in Aberdeen.
The most popular way to win full standing head height and real floor space from your roof. A dormer turns a cramped loft into a proper double bedroom, office or en suite, built by a family firm with over 20 years' experience across Aberdeen and Aberdeenshire.
The conversion that adds
the most usable room.
A dormer is a structure that projects outward from the slope of your roof, creating a section of vertical wall and a flat or pitched roof above it. In plain terms, it pushes the roof out to give you a box of full height space where the slope used to eat into the room. That single change is why a dormer loft conversion is the most popular choice in Aberdeen for anyone who wants a genuine bedroom upstairs rather than a low cupboard you have to stoop in.
The difference is dramatic. A roof light scheme works only where you already have the head height, while a dormer creates it. By building out, a dormer gives you areas where you can stand fully upright, fit a wardrobe against a straight wall, and place a bed without the headboard meeting a slope. On a typical Aberdeen semi or terrace, a rear dormer can comfortably yield a double bedroom, often with room for a small en suite. For over 20 years, families across the North East have asked Granite Builders to build exactly this.
We are a family-run firm, not a faceless contractor. As Federation of Master Builders members and a TrustMark registered business, we have been independently vetted and inspected, so the standard you are promised is the standard you get. This page explains what a dormer is, how much head height and floor space you stand to gain, the difference between a flat-roof and a pitched dormer, where the building warrant and planning lines fall in Scotland, and honest indicative pricing. When you are ready, we will visit, measure up and give you a detailed written quote with no obligation.
One idea, built to suit
your roof and your street.
A dormer is not a single fixed shape. The style we recommend depends on your roof, the look you want and what the council will allow. Here are the four we build most often across Aberdeen and Aberdeenshire.
Flat-Roof Dormer
A clean box with a flat top that maximises internal head height and floor area. The most space for the money and the most common choice.
Pitched Dormer
A small gable or hipped roof on top of the dormer. Sits more naturally on traditional granite homes and pleases planners.
Full-Width Dormer
A single dormer spanning the whole rear roof slope. The largest amount of new floor space, ideal for a bedroom plus en suite.
L-Shaped Dormer
Two dormers joined over the main roof and the rear addition. Common on period homes with a back return, for the most rooms.
How much room a dormer
actually puts back.
Head height is the whole point of a dormer. A habitable room generally needs around 2.2 to 2.4 metres of standing height over a reasonable area of floor. In an unconverted loft, the only place that height exists is along the ridge, and the sloping rafters waste the floor on either side. A dormer lifts a section of roof up to vertical, so the full ceiling height carries right out to the new dormer wall instead of dropping away. That is what turns a strip of usable floor into a whole usable room.
The floor space gain follows the same logic. Below roughly 1.5 metres of height, a loft floor is good for storage and little else. By building out, a dormer converts that low margin into space you can actually furnish, often adding several square metres of genuinely usable floor where there was none. On a standard Aberdeen semi this is frequently the difference between a single box room and a comfortable double bedroom with space for a wardrobe and, in many cases, an en suite.
How much you gain depends on the width of your roof, the pitch and how far we can project the dormer within planning limits. We measure all of this at survey and show you, in plain numbers, the floor area and head height your specific roof will deliver before you commit to anything. If a dormer is not the right answer for your loft, we will say so and point you to the alternative.
Why it is the choice most Aberdeen homes make.
Full Standing Height
A dormer builds the head height a flat roof light scheme cannot. You stand upright across most of the room rather than only under the ridge, which is what makes it a real bedroom.
Genuine Floor Space
By pushing the roof out, a dormer reclaims the low margins a sloped loft wastes, adding several square metres of furnishable floor where there was only storage before.
Room for an En Suite
The extra width a dormer creates is often enough to fit a shower room alongside a double bed, the combination that adds the most value and appeal for buyers.
Suits Aberdeen Roofs
Most city terraces, granite semis and shire detached homes carry a rear dormer well. We build the style that fits your roof and keeps the council on side.
Dormer conversions
across the North East.
How much does a dormer
loft conversion cost?
Most builders in Aberdeen will not show you a number until they are in your living room. We will. A dormer sits in the middle of the loft conversion range because it involves real structural work to build the box out. The figures below are honest starting points. For the full picture, see our loft conversion cost guide.
Indicative only, subject to a site survey, and exclude VAT. A dormer loft conversion typically falls in the region of £50,000 to £65,000, with the wider loft band running £45,000 to £65,000 and up depending on size, the dormer style and the finish you choose. Our quotes cover the structural steels and dormer framing, insulation, the new staircase, windows, electrics, plastering, internal finishing and building warrant liaison. We tell you upfront what sits outside the contract, so the final invoice holds no surprises. We provide a detailed written quotation free of charge after a site survey.
What the rules say about
a dormer in Scotland.
Dormers change the shape of your roof, so the planning side matters more here than with a roof light scheme. Here is how the two approvals tend to break down for an Aberdeen dormer.
Indicative only, subject to a site survey, and exclude VAT. A dormer loft conversion in Scotland always needs a building warrant from Aberdeen City or Aberdeenshire Council, and a larger or front-facing dormer may also need planning permission. Allow additional time at the start for these approvals before work begins on site. We tell you exactly what your project needs at quote stage and manage the applications throughout.
Your money and your home,
protected at every stage.
Protected for years
Through our TrustMark registration, your dormer conversion can be covered by an Insurance Backed Guarantee, so your investment is protected even in the unlikely event we could not return to put something right. Ask us for full details.
We stand behind it
Our work is covered by a written workmanship guarantee. If a covered defect appears after completion, we come back and fix it. No arguments, no fuss.
Contracts on every job
We carry public liability insurance and work to a written contract on every project, large or small, so everyone knows exactly what was agreed.
Pay as work is done
You pay to a written schedule tied to agreed milestones, only for work that is completed and inspected. For larger projects, we can introduce a regulated finance provider so you can spread the cost.
From your first call to the final handover.
Free Survey & Quote
We visit, measure the head height and pitch, work out how far the dormer can project, and produce a detailed written quote. No ballpark figures, and no obligation to go ahead.
Design & Approvals
We prepare or coordinate drawings and structural calculations, then submit your building warrant, and any planning application your dormer needs, and handle the council on your behalf.
The Build
One team, managed by your project manager, frames the dormer, makes it watertight and fits out the room to an agreed programme. We protect the rest of your home and keep the site tidy.
Completion & Aftercare
We arrange the completion inspection, walk you through your new room, deal with any snags, and back the job with a written guarantee. We do not disappear when the invoice is paid.
Trusted by homeowners across Aberdeenshire.
"Granite Builders did a great job removing a wall and installing a steel joist for us. They kept the place pretty tidy across all days they were here. Thank you."
"They done an alteration by making a new wall opening and putting in a steel beam, then refurbished the whole house including our kitchen and bathroom. Well recommended."
"Great people to deal with, highly recommend to anyone. Fantastic workmanship along with professional support. Answered everything I wanted to know along with having various choices when making decisions."
A dormer specialist Aberdeen has trusted for over 20 years.
Granite Builders has been part of Aberdeen and Aberdeenshire for over two decades. We are a family-run business, which means our reputation is personal. It is built one dormer at a time, and we intend to keep it that way.
We know this region, and we know its roofs. We understand the granite, the older cut roofs in the city terraces, the trussed roofs on newer estates, and exactly how far a rear dormer can project before Aberdeen City or Aberdeenshire Council want a planning application as well as a building warrant. That local knowledge is what keeps dormer projects on schedule and budgets where they should be. We are proud Federation of Master Builders members and TrustMark registered, because those standards matter to the people who trust us with their homes.
Dormer conversions across Aberdeen
and Aberdeenshire.
We build dormers right across the city and the shire. From the West End of Aberdeen to Stonehaven, Inverurie, Banchory and beyond, if your home is in the North East, we can help. Not sure we cover your street? Just ask, or see our service areas.
Dormer loft conversion questions, answered.
A dormer is a structure built out from the slope of your roof, with a vertical front wall and a flat or pitched roof of its own. It creates a box of full height space where the roof slope used to cut into the room. The result is genuine standing head height and extra floor area, which is why a dormer is the most popular loft conversion in Aberdeen for turning a cramped loft into a proper bedroom or office. We explain the wider options on our loft conversions page.
A dormer lifts a section of roof to vertical, so the full ceiling height carries out to the new dormer wall instead of dropping away down the slope. A habitable room generally needs around 2.2 to 2.4 metres of standing height, and a dormer is how you create it where the existing loft falls short. On floor space, it reclaims the low margins a sloped loft wastes, often adding several square metres of usable floor. The exact gain depends on your roof width and pitch, which we measure at survey and show you in plain numbers.
A flat-roof dormer gives the most internal head height and floor space for the money, which is why it is the most common choice. A pitched dormer, with a small gable or hipped roof, sits more naturally on traditional granite homes and is often easier to get past planners, though it gives slightly less internal space. The right answer depends on your roof, the look you want and what the council will allow. We recommend the style that balances space, appearance and approval at survey.
It depends on the dormer. Many modest rear dormers fall within permitted development in Scotland, so no full planning application is needed. Front-facing or large dormers, and homes in conservation areas or listed buildings, usually do need planning permission. Separately, every habitable loft conversion needs a building warrant from Aberdeen City or Aberdeenshire Council, covering structure, fire safety, insulation and the staircase. We tell you exactly what applies to your dormer at quote stage and prepare and manage both applications for you.
As a guide, a dormer loft conversion in the Aberdeen area typically falls between £50,000 and £65,000, sitting in the middle of the wider loft band of £45,000 to £65,000 and up. Adding an en suite or a full-width dormer pushes the figure towards the top. These figures are indicative only, subject to a site survey, and exclude VAT. For a full breakdown of what drives the price, see our loft conversion cost guide, then ask us for a detailed written quote free of charge.
A well built dormer that adds a genuine double bedroom, ideally with an en suite, is one of the most reliable ways to increase both the space and the value of a home. It uses an area you already own without losing any garden, and the full head height a dormer creates is exactly what makes the room appeal to buyers rather than read as an awkward attic. We cannot promise a specific figure, as it depends on your home and the local market, but a quality dormer done to the building warrant is an investment that tends to pay back.
Ready to add a dormer upstairs?
Contact Granite Builders today for a free, no-obligation quote on your Aberdeen dormer loft conversion. Call 07946 046935 or send a message, and we will get back to you within one business day. Your survey is free, your quote is detailed, and there is no pressure to go ahead.
