The short answer
Adoption in London costs $200 to $350. Humane Society London & Middlesex charges $300 for a kitten, $250 for an adult and $200 for a senior. Purrfect Haven charges $350. Add the annual City of London cat licence, which runs $23 for a spayed and microchipped cat and $53 for an intact one. Then budget $1,200 to $2,300 for year one including gear, food, litter and vet care, with 13% HST on most supplies.
Most people ask what the adoption fee is and stop there. That is the wrong number to worry about. The fee is the cheapest part of the first year and the best value in the entire budget, because it bundles surgery, vaccines and a microchip at well below what those cost separately at a London clinic.
What catches London owners out is the rest. The cat tree. The carrier you needed before pickup, not after. The 13% HST on every bag of litter. And the annual cat licence, which London genuinely requires and most new owners find out about the hard way.
Below is the full picture, verified where it can be verified. If you would rather see who is available first, the live London cat listings are refreshed regularly.
London Cat Adoption Fees
| Where | Fee | Notes |
|---|---|---|
| HSLM kitten | $300 | Includes $50 non-refundable admin fee |
| HSLM adult cat | $250 | Includes $50 non-refundable admin fee |
| HSLM senior cat (10+) | $200 | Cheapest fully vetted route in London |
| Purrfect Haven Cat Rescue | $350 | Foster-based, cats only |
| Other London foster rescues | Ask directly | Priced per cat, not by published tier |
Fees verified July 2026 from hslm.ca and purrfecthavenrescue.ca. Confirm before you go, since rescues adjust fees.
What the fee already bought you
An HSLM cat leaves spayed or neutered depending on age, microchipped, flea treated with Revolution, vaccinated, dewormed, given a rabies vaccination depending on age, and sent home with a seven-day supply of food. Purrfect Haven includes the spay or neuter, first vaccines, a vet check, flea prevention, deworming and rabies.
Price those separately at a London clinic and the spay alone often exceeds the entire $250 adult adoption fee. The microchip, the vaccine series, the deworming and the parasite treatment stack on top. This is why the arithmetic on a free kitten never works.
It also matters for the licence. London's cheapest cat licence tier requires the cat to be both spayed or neutered and microchipped. An adopted cat already is, which drops the licence from $53 to $23 in year one and every year afterwards.
The honest first-year budget
| Item | Low | High | Notes |
|---|---|---|---|
| Adoption fee | $200 | $350 | Senior at HSLM to Purrfect Haven |
| City of London cat licence | $18 | $53 | Lowest if spayed and microchipped |
| Litter box, scoop, mats | $40 | $90 | One-time, plus HST |
| Carrier | $35 | $80 | Required at pickup, buy before you go |
| Scratching post or cat tree | $45 | $200 | Not optional if you like your sofa |
| Bowls, bed, toys, brush | $50 | $120 | One-time, plus HST |
| Food for the year | $400 | $800 | Wet and dry mix, one cat |
| Litter for the year | $180 | $350 | Clumping clay to premium |
| First vet visit and follow-up vaccines | $100 | $300 | Adopted cats arrive partly done |
| Annual exam and parasite prevention | $150 | $350 | Ongoing every year after |
| Year one total | ~$1,220 | ~$2,290 | One healthy cat, before HST on goods |
Supply and food ranges are typical London retail estimates, not quoted prices. Licence and adoption fees are verified. Add 13% HST to the retail lines.
The cat licence nobody mentions
London licences cats, not just dogs. Plenty of Ontario municipalities do, and plenty do not, so people arriving from elsewhere often have no idea. The program is called Cat Identification and it is administered by the London Animal Care Centre, reachable at 519-685-1330.
Licences expire December 31 each year. Registered between January 1 and July 1, the fee is $23 for a cat that is spayed or neutered and microchipped, $28 for spayed or neutered only, and $53 for an intact cat. For a cat acquired or moved into London after July 1, those drop to $18, $20 and $38. Owners aged 65 and over take $5 off per cat.
First-time licences can be done at the shelter, online or by home visit, and you bring breed information, proof of rabies vaccination and documentation of the spay, neuter or microchip. Late renewals add fees. Failing to register can result in a higher fee, a fine or court action, so put it on the first-week list along with the vet appointment.
Build an emergency fund before you need it
Keep at least $1,500 accessible or carry insurance. The most common emergency in male cats is a urinary blockage, which is life-threatening within hours rather than days and needs a vet immediately, not a wait-and-see. A single after-hours visit can approach or exceed that figure on its own.
London has 24-hour emergency coverage at London Regional Veterinary Emergency and Referral Hospital on Adelaide Street North, with weekend and overnight coverage also available at Southwest Veterinary Hospital on Wellington Road South. Hours shift, so phone first. Pet insurance for a young cat generally runs $25 to $50 a month in Ontario. Pick the fund or the policy, but pick one.
Where to actually save money
Adopt a senior. $200 at HSLM against $300 for a kitten, and no kitten-proofing, no second vaccine round, no replaced furniture.
Adopt rather than take a free kitten. The unvetted kitten costs more by month three. Every time.
Licence at the lowest tier. An adopted cat is already spayed and microchipped, so it qualifies for $23 instead of $53.
Buy litter in bulk, not the small bags. Litter is the line that quietly runs away with the budget over twelve months.
Do not cheap out on the scratching post. A $45 post protects a $1,200 sofa. This is the highest-return purchase on the list.
Check the City subsidy programs. If you are on Ontario Works, ODSP, ACSD or in subsidised housing, the City spay and neuter program is $80 for a cat. Details in our spay and neuter guide.
Browse adoptable London cats
Every listing shows the rescue so you can check the fee tier before you apply. Seniors and adults sit alongside kittens. Listings refreshed regularly.
See Available London Cats →Frequently Asked Questions
How much does it cost to adopt a cat in London, Ontario?
Between $200 and $350 depending on where you go and how old the cat is. Humane Society London & Middlesex publishes a clear tier: $300 for a kitten, $250 for an adult, $200 for a senior aged ten or older, each including a $50 non-refundable administration fee. Purrfect Haven Cat Rescue charges $350. The smaller volunteer foster groups price per cat rather than by a published schedule, so you ask when you enquire about a specific animal. Expect those to land in the same range, because they are all recovering the same veterinary work.
What does a London cat adoption fee actually cover?
The veterinary work that would cost you far more separately. An HSLM cat goes home spayed or neutered depending on age, microchipped, treated with Revolution for fleas, with initial vaccinations, an initial deworming, a rabies vaccination depending on age, and a seven-day supply of food. Purrfect Haven includes the spay or neuter, first vaccines, a vet check, flea prevention, deworming and rabies. Ordered separately at a London clinic, that bundle runs several hundred dollars before you add 13% HST on the non-surgical items. The fee is a discount, not a price tag.
Do I have to licence my cat in London, Ontario?
Yes. London runs an annual Cat Identification program administered by the London Animal Care Centre, and it catches most new owners by surprise. Licences expire December 31 every year. Registered between January 1 and July 1, the fee is $23 for a cat that is spayed or neutered and microchipped, $28 for spayed or neutered only, and $53 for an intact cat. For a cat acquired or moved into London after July 1, the fees drop to $18, $20 and $38 on the same basis. Owners aged 65 and over get $5 off per cat. Late renewals carry additional fees.
What does a cat cost per year in London after the first year?
Plan on roughly $900 to $1,600 a year for a healthy adult cat, and that is before anything goes wrong. Food is the biggest line at $400 to $800, litter runs $180 to $350, and an annual exam with parasite prevention adds $150 to $350. The cat licence renews every year at $23 or less if your cat is spayed and microchipped. Year one costs more because of the one-time gear and the adoption fee. If those numbers feel tight, that is useful information now rather than in month eight.
Is a senior cat actually cheaper in London?
On adoption day, clearly yes. HSLM charges $200 for a cat aged ten or older against $300 for a kitten, and a senior needs no kitten-proofing, no second round of vaccines and far less replaced furniture. Over a full lifetime the picture is more even, because older cats are likelier to need dental work, bloodwork or medication for something chronic. What you are really buying with a senior is a known quantity. You can see the cat's personality, size and health status on day one instead of guessing for two years.
Why is a free kitten more expensive than a $250 shelter cat?
Because free means unvetted. A free kitten from a classified listing arrives unspayed, unvaccinated, unmicrochipped and untested for feline leukemia, and you pay for every one of those at full London clinic rates plus 13% HST on the non-surgical parts. The spay alone at a regular clinic often costs more than the entire HSLM adult adoption fee. Add vaccines, deworming, testing and a microchip and you are well past $500 for a kitten you paid nothing for. Classified sites also carry a real scam risk, including deposits taken for animals that never existed.
What is the cheapest legitimate way to get a cat in London?
Adopt a senior cat from Humane Society London & Middlesex at $200. It is the lowest fully vetted price in the city and it comes with the surgery, microchip, vaccines, deworming, flea treatment and a week of food already handled. Then register the cat for the licence at the lowest tier, which requires the cat to be spayed or neutered and microchipped. Adopted cats already meet both conditions, so an adopted London cat licences for $23 or less while an intact cat costs $53. The savings compound.
How much should I budget for emergencies?
Keep at least $1,500 accessible, or carry insurance. A single after-hours emergency visit in London can run past that on its own, and urinary blockage in a male cat is both common and genuinely life-threatening within hours. London has 24-hour emergency coverage, and you do not want to be deciding whether you can afford the visit at 2 a.m. Pet insurance for a young cat generally runs $25 to $50 a month in Ontario. Either build the fund or buy the policy, but do one of them before you need it.
Does HST apply to cat adoption fees and supplies in Ontario?
Ontario charges 13% HST, and it applies to most of what you buy for a cat: litter, food, carriers, cat trees, toys and non-prescription supplies. Veterinary services are generally not taxed the same way as retail goods, but the products a clinic sells you often are. The practical effect is that your $400 supply run at a London pet store is closer to $450 at the till. Build the tax into the budget rather than treating it as a surprise, because on a first-year total it is real money.
Are there low-cost options if money is tight in London?
Yes, and London is better served than most Ontario cities. The City runs a subsidised spay and neuter program at $80 for a cat, open to residents receiving Ontario Works, ODSP, ACSD or subsidised housing, or families below a City income threshold. There is also a free trap-neuter-return program for feral cats inside city limits. Those help with surgery costs rather than adoption fees, but surgery is the single biggest veterinary expense a cat owner faces. Our spay and neuter guide covers the eligibility rules in detail.
Should I adopt two cats instead of one?
It costs less than doubling, and often works better. Two cats share the tree, the scratching post, the toys and most of the gear, so the extra cost is mostly food and litter, roughly $500 to $900 a year more. What you get is two cats who entertain each other, which matters during a London January when nobody is opening a window. Rescues list bonded pairs on purpose because those cats settle faster together. If you work long days, a pair is frequently the kinder choice.
Do London rescues ever waive or reduce adoption fees?
It happens, particularly for seniors and long-stay cats, and particularly when a shelter is over capacity during kitten season. HSLM already prices seniors lower at $200 as a standing policy. Reduced-fee events do come up, but they are not scheduled far ahead and they are not something to wait for if you have found the right cat. The better move is to ask directly about the cat you want. Rescues would rather place an animal at a lower fee than keep housing it, and they will tell you if there is flexibility.
Related London Guides
Ready when you are
Adoptable cats from London and Middlesex County rescues, in a single list.
Browse Available London Cats →New cat? Start with these care guides
Everything a new adopter needs to set up a safe, happy home.
