Opinion on this ?

It is target advertising, my opinion you need to be very tactful on private personal residence. The more you target advertise, selecting your type of customer base, the more successful you will be. Your best advertising is your existing customers, word of mouth, a good referral from a pleased customer is money in the bank. When I first started, I was fortunate in that I bought turn key companies, but even with that I targeted companies that had the customer base I wanted. You want a demographic that has what you want to sell (service/product or both). In plumbing or scraping your still selling something. If you want money in the bank you need to market your services. Even here on the forum we are advertising in several ways, some directly, some indirectly through networking.