It's a viable idea, the devil is in the execution.
1. Every homeowner is bombarded with "we buy your house" junk mails, text messages, spam phone calls every day, so how are you differentiate yourself from a million other wholesalers in the market?
2. Most people work with real estate agents that's what they know and it's a regulated industry. Wholesaling is a wild west, if you work with people you trust, fine, but there are also bunch of scam artists/liers out there, the less sophisticated buyers can get hurt easily if they don't know how to screen wholesalers
2.5 same as every other contractors, handing out flyers, door knocking. The key is repeat business. Consistent quality that makes the customer happy, within their budget, and make you money, how? Are you gonna have your own employees you can control or do you just sub it out to contractors who may or may not show? now you have people just call you, complain...
3. How do you quality control the contractor? The good ones charge good money, cheap ones don't show up or do good work. So you are basically being a contractor and how much spread are you making?
4. Assume it's a $30 lawn cut job, how much are you charging the customer and how much are you selling it to the contractor? Is it worth the money for you to be responsible for a job and only make a small percentage? What's your license and insurance to allow you to do the contract legally? How and when are you and your contractor get paid? Again, contractors also get called from people who sell leads too, so how are you different than the rest? Are you charging less per lead? or do you get paid a percentage when the contractor get paid?
5. So just like every wholesaler out there.
6. just like every wholesaler out there.
7. It's called assignment of contract and get an assignment fee. same thing
All in all, it's a wholesaling game with a little extra services thrown in. The execution would be the same as wholesaling.
One of my wholesaler friend is doing this but instead of trying to make money on the service side, he genuinely does it to help out the seller and not upcharge anything or even invest his own money if it's something small like clean up the property. 6-12 months down the road, he builds a good relationship with the seller and gets to buy the property from the seller. I feel like his way feels more genuine and viable than your idea proposed.