Dormer windows in Ramsey
We design, build and weatherproof dormer windows and dormer loft conversions for homeowners across Ramsey, working from first survey through to building control sign-off.
What we build in Ramsey
Because Ramsey is largely Victorian and Edwardian terraces, interwar semi-detached houses and post-war bungalows, the roof pitches and span widths we meet are fairly predictable, and that makes feasibility a quick conversation rather than a guess.
Whether that is a single flat roof dormer to make a back bedroom usable, or a full-width rear dormer with a bedroom and en-suite, the process is the same: a free measured survey first, a fixed written price second, and nothing else until you have both in front of you.
Planning permission in Ramsey
Whether you need planning permission or a lawful development certificate depends on the elevation, the volume already used and the local authority's Article 4 position — all of which we confirm before design work starts.
Ramsey sits in Cambridgeshire, and local authority interpretation of the volume allowance does vary — which is why we check the planning history at your specific address rather than assuming the neighbours' dormer sets a precedent.
How the job runs
Glazing
Windows fitted square, sealed and drained, with escape-compliant opening lights where required.
Survey and feasibility
A specialist measures the roof, checks ridge height, span and structure, and confirms whether you are inside permitted development.
Scaffold and protection
Scaffold designed, erected and inspected. Temporary weather protection over the work area before anything is opened.
Weatherproofing
Deck, insulation, membrane or lead, cheek cladding, flashings and gutters — the dormer is weathertight from this point.
We only do dormers. That sounds like a limitation until you have watched a general builder improvise a back gutter on a wet Thursday. Send us the address and roughly what you are hoping to gain, and we will come back with a realistic answer rather than an optimistic one.
Popular in Ramsey
Dormer work we are asked for most
Sash Dormer Windows
Vertical sliding sashes sized and detailed for a dormer opening.
Learn moreLead & Zinc Dormer Roofing
Traditional code lead and standing-seam zinc for dormer roofs, cheeks and flashings.
Learn moreGable-Fronted Dormers
A pitched dormer with a vertical gable face — the classic 'dog-house' front elevation.
Learn moreL-Shaped Dormers
A rear dormer joined to a second over the outrigger — the Victorian terrace answer.
Learn moreDormer Loft Conversions
The full job — structure, dormer, stairs, insulation, plaster and building control sign-off.
Learn moreDormer Window Replacement
Swap tired, draughty or rotten dormer windows without touching the structure.
Learn moreFAQs
Dormers in Ramsey — FAQs
How disruptive is a dormer build?
Less than people expect, because most of the work happens above your ceilings and is reached from the scaffold. The noisy phases are opening up and installing steels, typically two to four days. Once the staircase is cut in there is dust and traffic through the house, and we sheet and protect the route for that period.
Can a dormer include an en-suite?
Very often, yes — a full-width or L-shaped dormer usually has enough floor area for a bedroom plus a shower room. The practical constraints are getting soil and waste down to an existing stack, and whether the head height over the shower tray works. Both are settled at survey.
Can you build a dormer in winter?
Yes, with adjustments. Temporary weather protection over the scaffold lets structural work continue in most conditions. GRP roofing needs dry conditions above about 5°C to cure properly, so in a cold spell we either sequence it differently or specify EPDM, which is unaffected.
Do I need planning permission for a dormer window?
Rear dormers on a house often fall under permitted development, provided the dormer is set at least 200mm back from the eaves, sits below the ridge line, uses materials similar in appearance to the existing house, and stays within the volume allowance — 40m³ for a terrace, 50m³ for a semi or detached. Front-facing dormers, flats and maisonettes, listed buildings, conservation areas and any property with an Article 4 direction all need a full planning application. We check the constraints on your specific address before we quote.
How long does a dormer take to build?
A single box or flat roof dormer is typically three to five weeks on site. A full-width rear dormer runs five to eight weeks, and an L-shaped dormer on a terrace with an outrigger is closer to seven to ten. A complete dormer loft conversion including the staircase, services and finishes is usually eight to twelve weeks from scaffold up to sign-off.
Does a dormer need building regulations approval?
Yes, always — permitted development covers planning, not building control. A dormer needs approval for structure, thermal performance under Part L, fire escape and protected route under Part B, and stairs under Part K if a staircase is involved. We handle the application, the inspections and the completion certificate.
Find out what your roof will take
A free measured survey in Ramsey tells you what is achievable, what it needs, and what it costs — before you commit to anything.