BOAS surgery cost UK: prices, what's involved, and insurance

BOAS — brachycephalic obstructive airway syndrome — is the breathing disorder built into flat-faced anatomy, and BOAS surgery is now one of the most common referral procedures in UK veterinary practice. This guide covers what the surgery costs in 2026, what’s actually done, and the insurance questions that decide whether you pay £99 or £5,000.

What BOAS is, briefly

Breeding for a flat face compresses the airway without shrinking the soft tissue inside it. The result, to varying degrees: narrowed nostrils, an overlong soft palate that flutters into the airway, and in more severe cases everted laryngeal saccules and a narrowed windpipe. The dog works harder for every breath — that’s the snoring, snorting, and heat intolerance owners often mistake for breed character.

Affected breeds: French Bulldogs and Pugs most heavily, then English Bulldogs, Boston Terriers, Shih Tzus, Cavalier King Charles Spaniels, and flat-faced cats (Persians can be affected too).

What BOAS surgery costs in the UK (2026)

Item	Typical cost
Functional grading assessment (pre-surgery)	£150 to £400
BOAS surgery — first-opinion practice	£2,500 to £3,500
BOAS surgery — referral centre	£3,500 to £6,000
Post-op recheck and grading	£100 to £250

The £2,500 to £6,000 spread comes down to three things:

1. What needs correcting. Nostrils plus soft palate is the standard package; adding laryngeal saccule removal or more complex airway work moves the price up.
2. Where it’s done. Referral centres charge more but bring laser equipment, anaesthetists experienced with high-risk brachycephalic airways, and overnight intensive care — which matters, because post-operative swelling in the first 24 hours is the main danger period.
3. Geography. London and the South East sit 20% to 30% above northern pricing, as with everything veterinary.

Some referral centres and university hospitals run formal BOAS clinics using the Cambridge grading scheme (grades 0 to 3, based on breathing before and after exercise). The assessment is worth doing even if you’re unsure about surgery: it turns “he snores a bit” into an objective severity grade and a treatment recommendation.

Does pet insurance cover BOAS surgery?

Yes — with two conditions, and both catch people out.

Condition 1: no prior signs

Insurance covers conditions that arise after the policy starts. BOAS signs — snoring, noisy breathing, exercise intolerance, heat stress — typically appear young, often within the first year or two. Any mention in the clinical notes before the policy start date makes BOAS pre-existing and excluded for life.

This is the single strongest argument for insuring a flat-faced puppy from day one of ownership, before the first vet visit. A Frenchie insured at week 8 with a clean record has full airway cover; the same dog insured at 18 months, after a vet noted “snores heavily” at a booster appointment, does not.

Condition 2: the insurer doesn’t exclude BOAS

Because BOAS is conformational — caused by the breed’s shape — some insurers exclude it or cap it for flat-faced breeds. As of mid-2026:

• Cover BOAS on standard terms: ManyPets, Napo, Petplan (Covered For Life), Agria
• Restrictive: a growing number of comparison-site and budget brands, which either name BOAS as excluded for brachycephalic breeds or apply inner limits below the cost of the surgery

The trend is towards exclusion, so a policy bought today on good wording is worth holding onto. Ask the direct question before buying — “Is BOAS surgery covered for this breed on this policy?” — and keep the written answer. Our French Bulldog guide tracks the current state of play.

A £99 to £150 excess aside, a covered BOAS claim at a referral centre is exactly what a £7,000+ vet fee limit exists for. On a £4,000 limit, a top-end BOAS bill plus the same year’s skin or ear claim overruns the pot — which is why our flat-faced breed guides recommend £7,000 as the floor and £10,000 as the comfortable number.

What the money buys: the procedure and recovery

The standard surgery is one anaesthetic covering:

• Nostril widening (alar fold resection) — removing a wedge of tissue so the nostrils physically open
• Soft palate shortening (staphylectomy) — trimming the overlong palate away from the airway entrance, by scalpel or laser
• Laryngeal saccule removal — if they’ve everted into the airway (more common in grade 2 to 3 dogs)

Most dogs stay one to two nights for airway monitoring, go home on rest and soft food, and are back to normal exercise in two to three weeks. Owners typically report the difference within days: quieter breathing, better sleep, more enthusiasm for walks.

Two cost-relevant notes: anaesthesia for brachycephalic dogs carries elevated risk (part of what the referral premium pays for), and surgery doesn’t make the airway normal — it makes it better. A minority of dogs need revision surgery years later, which is a fresh claim on a lifetime policy but a problem on maximum-benefit cover where the BOAS pot has already been spent.

If surgery isn’t on the table yet

For grade 0 to 1 dogs, management buys time and sometimes avoids surgery altogether:

• Weight — the single biggest modifiable factor; even a kilo of excess weight measurably worsens breathing in a small brachycephalic dog
• Harness, never collar — pressure on the throat directly compresses the compromised airway
• Heat discipline — walks at dawn and dusk in summer; flat-faced dogs die in heat that inconveniences other breeds

But management isn’t a substitute for assessment. A dog that snores at rest or tires after ten minutes of walking deserves a grading, not a smaller collar.

Summary

BOAS surgery costs £2,500 to £6,000 in the UK in 2026, with the assessment adding £150 to £400. Insurance pays when the policy predates the first signs and the insurer covers BOAS at all — ManyPets, Napo, Petplan, and Agria currently do; many budget brands don’t. If you own a flat-faced puppy, the sequencing is everything: insure first, vet visit second, and treat the snoring as a claim in waiting rather than a charming breed quirk.