The honest answer is under $1,000 if you're starting solo and don't try to brand yourself into oblivion before the first walk.
Most "how much does dog walking cost to start" articles are written by people who've never done it. They quote $5,000 to $10,000 because they assume you need a van, a custom app, and employees. You don't. The real startup number is a liability insurance policy, a spare leash, and a bag of treats.
The thing that actually decides whether you make money: clustering your clients. If your three morning walks are spread across town, you're burning an hour driving and $8 in gas for $60 in revenue. Cluster clients in the same neighborhood, ideally the same block. That routing decision is the difference between a profitable route and an expensive hobby.
Don't build a website for the first 10 clients. A Rover or Wag profile is free, people already search there, and the platform handles payment and insurance verification. Your first clients will come from neighbors and local Facebook groups, not Google. Save the website money until you have a consistent book.
The sick day problem nobody plans for: when you have six regular clients and you get the flu, all six dogs still need walking. Either you go anyway, or you have a backup walker who covers and takes a cut. Most people in year one just push through sick — have the backup conversation before you need it.
The rest — exact gear list, pricing by city, what to text your first ten neighbors, and the four client red flags to turn down — is in the full plan:
See the full dog walking business plan →
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