Find Mastiffs for sale across The Vale Of Glamorgan, with current prices around £400. Compare listings from trusted local breeders and sellers, including KC registered and health tested litters.
This page brings together listings from across The Vale Of Glamorgan, making it easier to compare availability, breeder details and prices across the county.
Price can vary by breeder, pedigree, location and what is included, so compare each advert carefully before contacting the seller.
New to buying a Mastiff puppy? Read our puppy buying guide, breed information and buying checklist to help you choose the right puppy and breeder.
5
2 year old female rotweiler brilliant with children house trained, 1 year old bull Mastiff boxer mix brilliant with children house trained genuine reason for sale owner moving abroad 450 each or 800 pound together
£400
Coral
Private seller in Bridgwater, Somerset (29 miles away from The Vale Of Glamorgan)
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6
Beautiful litter of full-bred Bullmastiff puppies looking for loving, permanent homes. 🐾 2 males & 3 females available 🐾 DOB: 07/07/2026 🐾 £1,650 each 🐾 Ready for their new homes from 07/09/2026 Both mum and dad are full-bred Bullmastiffs from good bloodlines and are strong, impressive examples of the breed. Mum is our family dog and can be seen with the puppies.
£1,650
pearce
Private seller in Newry, County Down (223 miles away from The Vale Of Glamorgan)
It's important to remember that any puppy that is advertised as 'Ready to leave now' must be microchipped before being sold by law.
Although not illegal to sell younger, it is also Highly recommended that a puppy does not leave their mother or siblings before being at least 8 weeks old. Generally, 8-12 weeks old is considered the best age to buy or sell a puppy.
An adult Mastiff costs around £400. This is the average price of the Mastiff itself and other costs involved include vet bills and supplies, dog food, treats and toys.
Adult Mastiffs are often available through three main channels: Retiring Breeders (who may rehome a dogs after its breeding career), Private Rehoming due to lifestyle changes, and Breed-Specific Rescues. When browsing our adult listings, look for 'KC Registered' or 'Health Tested' tags. Unlike puppiess, adult dogss should be assessed for their behavior around children, other pets, and their ability to be left alone, as these are the most common reasons for adult rehoming.
Male Mastiffs tend to be slightly larger and more muscular, with affectionate and playful personalities. They make loyal and energetic companions for families.
Training depends on the individual dog and consistency rather than sex. Male Mastiffs respond well to training when given proper guidance.
Neutering is often recommended to prevent unwanted litters and reduce some health risks. Your vet can advise on the best timing for your puppy.