Perranporth sits on the north Cornish coast between Newquay and St Agnes, behind one of the county's longest beaches. Popular with families, surfers and holidaymakers, the village has a mix of permanent homes, second homes and holiday lets, and steady demand for extensions, renovations and upgrades.
This guide covers what homeowners in Perranporth and the wider Perranzabuloe parish should think about before starting building work. It is general guidance only, so always check the specific position for your property with Cornwall Council.
Perranporth housing: what you are likely to be working with
Perranporth grew mainly as a seaside resort, so the housing is varied:
Older village properties: stone and render cottages and terraces near the centre and along the valley, often with solid walls and limited outside space.
Twentieth-century houses and bungalows: on the hillsides around the village, often with gardens big enough for extensions, garage conversions or garden buildings. Many bungalows have room in the roof for extra space.
Newer homes and apartments: modern estates and flats, where owners often want kitchen extensions, garden rooms or holiday let upgrades.
Older solid-walled homes need breathable materials and careful detailing; see our guides to damp in Cornish homes and insulating solid-wall stone houses. Some Cornish homes built with concrete blocks before the 1950s may also need a mundic test before a mortgage or major work; our mundic block guide explains this.
Planning checks for Perranporth homeowners
Many smaller projects can be built under permitted development, provided they meet every limit. Our permitted development guide explains the rules. Before relying on them, check:
Cornwall National Landscape: the St Agnes section of the Cornwall National Landscape (formerly the AONB) runs along the coast from the southern edge of Perranporth towards Porthtowan. If your property is in or near it, design and landscape impact will be looked at closely.
Neighbourhood plan: the Perranzabuloe Neighbourhood Development Plan was made in 2024 and forms part of the development plan used to decide applications in the parish. It is worth reading its policies before designing anything significant.
Conservation areas and listed buildings: check Cornwall Council's mapping for any heritage designations affecting your address. Listed buildings need listed building consent for most alterations.
Mining heritage: the wider St Agnes area includes parts of the Cornwall and West Devon Mining Landscape World Heritage Site, and old mine workings are found in parts of the parish. A mining search is sensible before buying land or building; see our guide to building on old mining land.
If your project needs permission, our guide to planning permission in Cornwall explains the process.
Dunes, sand and flood risk
Perranporth backs onto a large dune system. To the north, Penhale Dunes is a Site of Special Scientific Interest and a Special Area of Conservation, one of the largest dune systems in Cornwall. Work close to protected habitats may need ecological advice, and Natural England may be consulted on some applications.
The lower parts of the village sit in a valley close to the beach, where a stream meets the sea. Researchers studying the north coast have identified Perranporth as one of the communities likely to see more nuisance flooding in coming decades as sea levels rise. If your property is low-lying, check the Environment Agency's flood maps before designing an extension. Raised floor levels, flood-resilient materials and careful drainage may be sensible, and a flood risk assessment may be needed with a planning application. Our guide to flood risk and building work covers the options.
Coastal exposure and materials
Homes facing the Atlantic take a battering from wind-driven rain and salt air, and blown sand can find its way into everything. Choose roof coverings, render, windows, doors and fixings rated for exposed coastal sites, and think about where sand and water will collect around new thresholds and drains. Our guide to weatherproofing coastal homes explains suitable materials. Many plots are on a slope, which can mean extra excavation or retaining walls; see our guide to retaining walls and sloping sites.
Common building projects in Perranporth
The projects we are most often asked about in coastal villages like Perranporth include:
Rear and side extensions to create open-plan living. See our kitchen extensions guide.
Bungalow renovations and loft conversions. Our bungalow renovation guide explains the options.
Holiday let refurbishments timed between seasons. See our holiday let renovation guide.
Garden rooms and home offices. Our garden rooms guide covers planning and design.
In summer, traffic and parking around the village centre can be busy, so deliveries and skips need planning. A skip or scaffold on the highway normally needs a permit from Cornwall Council.
Building Regulations and practical checks
Most extensions, loft conversions and structural alterations need Building Regulations approval, separate from planning. Our Building Regulations guide explains how Building Control works. It is also worth checking radon guidance for your address; see our radon protection guide.
Frequently asked questions
Is Perranporth in an AONB?
The St Agnes section of the Cornwall National Landscape (formerly AONB) starts at the southern edge of Perranporth. Check Cornwall Council's mapping to see whether your property is inside it.
Does the neighbourhood plan affect my extension?
It may. The Perranzabuloe Neighbourhood Development Plan is used alongside the Cornwall Local Plan when planning applications are decided, so read its policies or ask Cornwall Council.
Do you cover Perranporth?
Yes. We work across the whole of Cornwall, including Perranporth, St Agnes and the surrounding villages.
Planning building work in Perranporth? Talk to us
Cornish Building Company works across the whole of Cornwall. See our pages for builders in Newquay and builders in Truro, our home extension and property renovation services, and the full list of areas we cover. Call us on 01208 816991 or contact us to talk through your project.
