Adult Fully Trained Mastiffs For Sale

1 Adult Fully Trained Mastiffs For Sale accross the UK

Find Fully Trained Mastiffs for sale across the UK, with current prices around £450. Compare listings from trusted breeders and sellers, including KC registered and health tested litters.

This page groups together listings that match this search more closely, helping buyers compare current availability, breeder details and prices in one place.

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.

  • Dixie mastiff x 1

    Dixie mastiff x

    16 hours ago
    • Ready Now

    Unfortunately we are having too look for a loving forever home for Dixie our 2 year old Mastiff cross as unfortunately she just really isn’t settling in well with our cat and it’s really not fair on either of them so I was suggested a home with no cats Dixie is still so young and full of so much energy and love she very affectionate and loves too go on long walks and loves

    £450

    S

    Sav0stpzz666 Active Today

    Private seller in Horsham, West Sussex

Similar results from outside your search

  • Male staffs x mastiff pup 3

    Male staffs x mastiff pup

    2 days ago
    • Ready Now

    Here is our loving family pet dozer most hardest but fairest thing for him only reason for sale is because my other older female dog isn’t accepting a puppy at all dozer is currently 4 months old his eating wet and dry food he loves his human affection playing and cuddling his the most gentle boy looking for his best forever home his yet to be seen by a vet for microchip

    £450

    R

    Ruby Active Today

    Private seller in Bedford, Bedfordshire

  • Mastiff Puppies – Big Loving Gentle Giants – Rare White Merle Available 5

    Mastiff Puppies – Big Loving Gentle Giants – Rare White Merle Available

    3 days ago
    • Ready in 4 days

    LITTER OF 6 — ONLY 4 REMAINING First merle sold within days at full asking price. Ready to leave from 11/07/2026. We are proud to offer 4 beautiful Bandogge Puppies from our much-loved family dogs. Mastiff are true gentle giants, big, affectionate, people-focused dogs that love nothing more than being part of the family. This litter has been raised in the middle of home life

    £1,000

    F

    Felipe Active Today

    Private seller in Enfield, London

  • Bullmastiff cross Great Dane puppy 4

    Bullmastiff cross Great Dane puppy

    • Ready Now

    White and grey with black patches , we seeking her because I live in a top floor and I’m pregnant ,I can’t look after her she’s a very happy dog ,she’s good with babies and other dogs, luna is no fully bullmastiff she cross breed.

    £650

    A

    Alejandro

    Private seller in Clapham, London

  • Stunning pups 3

    Stunning pups

    1 day ago
    • Ready Now

    One girl two boys left From a litter of 13 Lovely markings from both parents Mum Belgium Mali cross mastiff Dad is a American staff cross husky Mother can be seen £50 dep and remaining on collection

    £400

    M

    Michaela Active Today

    Private seller in Romford, London

  • Spanish mastiff 2

    Spanish mastiff

    1 week ago
    • Ready Now

    Looking for his new family, great with all other dogs, cats and children. I went to Spain to his parents. He's soft natured and adorable boy. 4 years old

    £400

    C

    Charlotte

    Private seller in Wolverton, Buckinghamshire

  • Mastiff 3

    Mastiff

    3 weeks ago
    • Ready Now

    Perfect family guardians We own both parents Bdk berry SOLD

    £1,000

    D

    Dan

    Private seller in Dunmow, Essex

Try expanding your search criteria to see more results:

Frequently Asked Questions

  • An adult Mastiff costs around £450. 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.

  • Key things include health checks, vaccinations, pedigree documents, breeder reputation, and the puppy's temperament. Our site features detailed adverts and breeder profiles to help you make an informed decision. Read our Mastiff Buyers Guide for more information.

  • Licensed breeders meet high standards for animal welfare and breeding ethics. mastiff-owners.co.uk highlights licensed breeders so you can trust you're getting a well-cared-for puppy.

Save search

When you save a search, we will notify you about matching adverts as soon as they are posted