Airbnb Rules in Cornwall

Cornwall is still open for Airbnbs and holiday lets, but the combination of planning controls, a 100% second-home council tax premium from April 2025, and a lot of political heat means you cannot treat it as an easy side gig any more.

Planning, new short-let use class and Article 4

Cornwall is a single unitary authority. Planning is already under pressure because of the second-home crisis, and the council is lining itself up to use the new national short-let tools hard.

As at April 2026:

A dwelling is normally Use Class C3.

If you flip it into a full-time Airbnb / holiday let with high turnover, the council can treat that as a material change of use to the new short-let use class (C5) or to a hotel-type/sui generis use, so you can be expected to apply for planning permission, especially in hotspots.

Government's February 2024 announcement confirms:

A new short-let use class for properties used as STRs.

A rule that homeowners can continue to let their own main or sole home for up to 90 nights a year without planning.

Beyond that, or for properties not used as a main home, planning permission can be required.

Cornwall Council's short-lets and PD guidance summarises the national reforms:

There will be: a mandatory national register of short-term lets, a new planning use class for short-lets, a 90-night "own-home" allowance, and councils will get more power to control STRs in areas where high numbers of lets harm housing.

Article 4:

Cornwall already uses Article 4 Directions mainly for conservation areas and design (windows, roofs, etc.) and HMOs in certain towns.

As at April 2026 there is no county-wide short-let Article 4 in force. Instead:

The council is signalling that, once C3 to C5 PD is live, it will consider Article 4 in the worst-affected communities (St Ives, Newquay, Padstow, parts of Falmouth, etc.).

A lot of online guides now talk as if all those changes are fully live everywhere. You need to be more precise on PropertyKiln: national C5 and the 90-night main-home carve-out are policy and being implemented; Cornwall is preparing to use them, but you still need to check for each property and area how they apply and whether any local Article 4 has been introduced since.

Enforcement and political heat

Cornwall is one of the most politically sensitive places in England for STRs and second homes:

Around 14,000 second homes and 22,000 people on the housing waiting list are quoted in recent coverage.

Cornwall Council leaders describe short-let controls as necessary to stop a "hollowing out" of communities and to make more homes available to locals.

Enforcement reality:

Planning:

Cornwall has started to require planning permission where residential properties are used year-round as short-term holiday lets, specifically to close what the local MP calls the "Airbnb loophole".

A North Cornwall MP's "Airbnb Bill" proposes that owners must get planning permission before short-term letting to stop second-home owners reclassifying as business lets solely to dodge council tax.

Housing and council tax:

From 1 April 2025, Cornwall introduced a 100% council tax premium on second homes.

That means a non-commercial second home now pays double normal council tax.

STR-specific enforcement:

The council's short-let page points directly to the new national planning controls and register and frames them as tools to protect communities.

Hosts who simply stop paying council tax and claim to be "businesses" without genuine commercial letting are now a clear political target.

So while there is not yet a Cornwall-wide STL licence, you have three layers of pressure: planning for change of use, a double council tax bill for non-commercial second homes from April 2025, and future national registration and C5 tools that Cornwall has already said it wants to use.

Council tax, second-home premium and business rates

Standard STR test

For England, the test is:

You are valued for business rates (self-catering) if, in the last 12 months, the property was:

Available to let for 140 days or more, and

Actually let for at least 70 days.

If not, you stay in the council tax list.

Cornwall's specific position

Cornwall has layered a second-home premium on top:

From 1 April 2025, second homes that are not being commercially let will face an additional 100% council tax premium.

Exemptions include:

Annexes forming part of a main home.

Job-related accommodation.

Some seasonal occupancy-restricted homes.

What this means practically:

If you keep a property as a lightly used second home and do not run it as a genuine commercial holiday let, your council tax bill doubles.

If you qualify as a holiday let for business rates, you can:

Avoid the doubled council tax.

Often get Small Business Rate Relief, which can reduce the rates bill to near zero for one small unit.

But that comes with conditions:

You must genuinely meet the 140/70 commercial letting tests, not just put a listing live.

The future national STR rules and Cornwall's planning stance mean that running a commercial-level holiday let may also drag you into planning and C5 territory, especially in the more fragile communities.

Common mistake in Cornwall: people try to tick the 140/70 boxes purely to dodge the 100% council tax premium, without factoring the future planning and Article 4 risk.

ADR, occupancy and seasonal patterns

Cornwall is highly seasonal. Summer school holidays, bank holidays and half terms are enormous; winter mid-week can be slow, apart from Christmas/New Year.

Typical ADR bands (whole-home, 1-3 beds, good spec):

St Ives:

Peak summer ADR: roughly GBP 200-350 per night for central cottages and view apartments.

Shoulder/off-peak: GBP 120-220 per night.

Newquay:

Peak summer ADR: GBP 170-280 per night.

Shoulder/off-peak: GBP 100-180 per night.

Padstow / Rock:

Peak: GBP 220-350+ per night, especially for larger houses.

Shoulder: GBP 140-240 per night.

Falmouth:

Peak: GBP 150-250 per night.

Shoulder: GBP 100-180 per night.

Porthtowan and comparable north-coast villages:

Peak: GBP 140-220 per night.

Shoulder: GBP 90-150 per night.

Occupancy patterns:

Peak summer weeks (late July through August): near 100% occupancy in prime towns if priced sensibly.

Easter, May half term, early September: 70-90%.

Shoulder months: 40-65% depending on pricing and property.

Winter (excluding Christmas/New Year): often 20-40% unless you deliberately chase long weekend and dog-friendly trade.

On a full-year basis:

Professionally managed, well-located holiday lets can see 60-75% annual occupancy.

Poorly managed, badly located or over-priced units can languish at 30-50%.

Worked annual gross examples:

St Ives two-bed, strong performer: Blended ADR across the year: GBP 200. Annual occupancy: 70%. Gross = 200 x 0.70 x 365 = GBP 51,100.

Newquay apartment, decent but not top-tier: Blended ADR: GBP 150. Occupancy: 60%. Gross = 150 x 0.60 x 365 = GBP 32,850.

Porthtowan two-bed, modest performance: Blended ADR: GBP 130. Occupancy: 55%. Gross = 130 x 0.55 x 365 = GBP 26,098.

All before: platform fees (often 15-20%), management (often 15-25% in coastal Cornwall once you include linen and call-outs), cleaning, utilities, repairs, marketing, finance costs and tax.

If you deliberately keep below the 140/70 thresholds to avoid being treated as "commercial", you will cut those gross numbers and still face double council tax if it is a second home.

Community backlash and political pressure

Cornwall is one of the poster children for the STR and second-home backlash:

22,000 people on the housing waiting list; 14,000 second homes.

The "Airbnb Bill" from a North Cornwall MP is explicitly designed to stop second-home owners dodging higher council tax by flipping to business rates with minimal letting.

Cornwall Council leaders have welcomed national STR reforms and the ability to require planning permission for STRs beyond 90 nights, get a national register.

Public discourse is not "how do we make STRs easier?" It is how to cut numbers and stop loopholes.

For your readers, that means Cornwall is now a political asset class: high income potential but high regulatory and reputational risk.

What Cornwall hosts get wrong

Thinking the game is still "flip to business rates and claim SBRR forever". From April 2025 a non-commercial second home pays double council tax in Cornwall. If you want to avoid that via business rates, you must run a genuine holiday-let business that meets the 140/70 tests, with all the planning and compliance risk that brings.

Assuming business rates is just a box to tick. VOA classification is evidence-based. Having a listing live is not enough. And the local MP's Airbnb Bill is aimed precisely at blocking paper-only flips to business rates.

Projecting old FHL tax treatment forward. The favourable Furnished Holiday Let regime has been scrapped from April 2025. A lot of Cornwall tax case studies online still assume FHL treatment. That is now out of date.

Banking on there being no planning consequences under C3. National reforms plus Cornwall's own guidance make it explicit: beyond letting your own main home for up to 90 nights, running a property as a full-time short-let can require planning permission under the new short-let use-class rules. Cornwall is exactly the sort of place that will lean into that.

Ignoring how "Cornwall" is perceived politically. This is not a low-profile district council. STRs and second homes are front-page issues. If you are at the margins of planning, tax or safety, you are in the wrong place to be complacent.

Over-estimating winter demand. Many spreadsheets use a flat occupancy assumption. In reality, Cornwall is extremely peaky: near-full in August, thin in January mid-week. If you do not model seasonality, your cash-flow and void assumptions will be wrong.

Failing to keep proper availability and booking records. With the 140/70 tests, the 100% council tax premium, and a national register on the way, "the OTA dashboard glitched" is not an excuse. You need your own records of nights available and nights actually let, across all platforms and direct bookings.

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