Conservatory replacement extensions in Alnwick: design, approvals and build
Alnwick homeowners can use us for the whole conservatory replacement project: survey, design, planning or permitted development checks, building regulations and the build itself.
- Guide price in AlnwickFrom £18,000 inc VAT
- PlanningOften permitted development (3–4 m), or prior approval up to 6–8 m
- Build time8–14 weeks on site
- Postcode districtsNE66
What is included
- Removal and disposal of the old conservatory
- Insulated walls and roof to current regulations
- New or upgraded foundations
- Glazing and doors to suit the new room
- Trial holes to check the existing foundations
- Opening widened into the house if wanted
A replacement is a chance to rethink the shape. Many conservatories are oddly proportioned; for a similar cost the new room can often be squarer, wider or better connected to the kitchen.
Conservatory replacement prices in Alnwick
Prices below are for Alnwick, using the North East England factor of ×0.91. They are guide ranges including VAT for the build only, not a quote.
Typical rates in Alnwick: £1,680 to £3,180 per m² including VAT, depending on specification.
| Size | Essential | Standard | Premium |
|---|---|---|---|
| 3 m × 3.3 m 10 m² | £18,000 – £22,000 | £19,500 – £25,500 | £25,000 – £32,000 |
| 3.5 m × 4 m 14 m² | £23,500 – £28,500 | £27,000 – £35,500 | £35,000 – £45,000 |
| 4 m × 5 m 20 m² | £33,500 – £40,500 | £39,000 – £50,500 | £50,000 – £64,000 |
Includes removal of the old conservatory. Reusing existing foundations is only possible after investigation.
Want a range for your exact size? The guide-price tool takes about a minute.
Extensions in and around Alnwick
Site visits are available across Alnwick (NE66). The same team covers Morpeth (17 miles), Ashington (19 miles), Bedlington (21 miles), Blyth (23 miles), all within easy reach.
For homes towards Tyne and Wear, Whitley Bay is around 29 miles away. The North East has many brick terraces, colliery-era housing and post-war semis, with rear extensions and kitchen extensions the most common requests.
Do I need planning permission in Alnwick?
In England a single-storey rear extension can usually go up to 3 m beyond the original rear wall of a semi-detached or terraced house, or 4 m on a detached house, without a planning application, provided it is no more than 4 m high, keeps eaves to 3 m within 2 m of a boundary and, with other buildings, covers no more than half the land around the original house. The larger home extension prior approval scheme raises those depths to 6 m and 8 m, with neighbours notified and a 42-day decision.
Homes in conservation areas, national parks, National Landscapes (formerly AONBs), the Broads and World Heritage Sites have tighter rules, so we always check the property's status and planning history before design starts.
If the work involves a shared wall, building on the boundary, or digging foundations within 3 m (sometimes 6 m) of a neighbour's building, the Party Wall etc. Act 1996 applies and notice must be served before work starts: two months for work to a party wall, one month for new walls on the boundary and for excavations.
Applications are decided by the local planning authority (your district, borough or unitary council).
Our process, step by step
Site visits are free and there is no obligation. Where drawings are needed, the design stage is priced in writing before it starts.
Free site visit
A designer visits, takes measurements and photos, and discusses layouts, budget and timing with you.
Design and approvals
Once the layout is agreed, we deal with the council: planning permission or written confirmation that none is needed, plus building control.
Fixed written price
We confirm the build price in writing, based on the approved drawings and the finishes you have chosen.
Build and sign-off
The build is managed from start to finish, inspected at each stage and signed off on completion.
Questions people ask about conservatory replacements
Do you cover all of Alnwick?
Yes. We cover Alnwick and the surrounding parts of Northumberland. Site visits are free and there is no obligation.
How long does a conservatory replacement take to build in Alnwick?
On site, typically 8 to 14 weeks once approvals are in place. Before that, allow 4–12 weeks design and approvals.
Do I need building regulations approval in Alnwick?
Yes. Almost every extension needs it, whatever the planning route. We prepare the drawings and book the inspections.
Does replacing a conservatory need planning permission?
A solid replacement is treated as a new extension, so it must meet the permitted development limits or get planning permission, and it always needs building regulations approval.
Can I keep the existing base?
Sometimes, but conservatory bases are often too shallow for solid walls. Trial holes tell us before we confirm the price.
Book a free site visit in Alnwick
We will measure up, check the planning position and give you honest guide figures.
- Free, no-obligation site visit
- Planning route checked before you spend on drawings
- Written price once the design is agreed
- Building control sign-off at the end
Prefer to talk? Call 0800 088 6341 or .
Book a free site visit
Tell us a little about the project and we will arrange a time.