Local marketing agency
Run a marketing agency focused on local SMB clients (restaurants, dentists, services) on retainer or per-project.
The idea, in plain language
Run a marketing agency focused on local SMB clients, such as restaurants, dentists, service businesses, plumbers, and contractors, on retainer or per-project. Quoted numbers range from $50K/year from postcard ad sales (Josh's $90 starter, about $4-5K profit per mailing), $80K in a summer off one pest-control YouTube jingle plus $2,000 per jingle sold 100+ times, Rachel Smith's community boards at about $3,200 profit each and about $10-15K/month overall, to Cody Schneider's productized-services math of $40-80K/month in 6 months and med-spa AI marketing at $2-3K/month per client for $1.4-2M revenue per location. Startup capital is usually $0 to a few hundred dollars; the customer is a one-to-few-employee local business owner; the agency's product is the system (web + SMS + voice + ads + leads), not just ads.
Where the sources agree
- Recurring monthly retainer is the prize — every operator aims at $1-3K+/month per local-business client.
- Pick one narrow local vertical and productize everything around it, such as plumbers, pest control, med spas, handymen, or another service category.
- The agency's product is the system (web + SMS + voice + ads), not just ads — Mike Stewart's $2,000 jingle is the funnel into the $250/month ad retainer.
- AI tools (Suno, ElevenLabs, GoHighLevel vibe-coding) cut production cost dramatically — what used to take a Nashville studio now takes ~15 minutes.
- Sales is the constraint, not delivery — Josh closes a plumber over 5 text messages; Cody ships demos to get live interest on camera.
Where they differ
- Direct-mail plays such as Josh's shared postcards and Rachel's community boards are offline; AI receptionist and website plays using GoHighLevel or Lovable are online-first.
- Some operators (Koerner) target $0-cost / 1-2-person shops with $10-15K/month outcomes, while Cody pitches $40-80K/month productised services with $1.4-2M-per-location med-spa math.
- Foot-in-the-door strategy varies: postcards to websites to AI automation in the Josh and Rachel examples, versus GoHighLevel AI site to voice receptionist to booking in Chris's version.
- Database reactivation (Chris D9Q2rpO0ko8) is a single high-leverage service vs AI receptionist retainer (Cody, $1-2k/mo) is the SaaS-flavoured version of the same idea.
- Greg Cody pitches scaling to $40-80K/month in six months with teams; Koerner-style operatorship pitches solo $10-15K/month — solo vs small-team as competing frames.
What each source says
KoernerThe Simplest Side Hustle You Can Start Under $100
Josh turned $90 into $50K/year selling ad space on shared postcards mailed every-door; he closes via Facebook groups and text, with ~$4-5K profit per mailing run.
Watch on YouTubeKoernerThe Most Profitable AI Business You've Never Heard Of
Chris demonstrates an AI email-marketing service for local businesses at $1,000/month, using beehiiv and Claude to reactivate dormant lists as a near-fully-automated offering.
Watch on YouTubeKoernerThe Most Overlooked Online Side Hustle Of 2026
Mike Stewart sells AI-made jingles (Suno + ElevenLabs) for plumbers/roofers/pest control as skippable zip-coded YouTube ads; one pest-control jingle sold 100+ times at $2,000 each, one client got 8 million skips in Abilene.
Watch on YouTubeKoernerNo Money? Start This AI Website Side Hustle
GoHighLevel vibe-coding for handyman local sites, cold-pitched by text or in-person, then upselling AI receptionist, booking, lead-gen and missed-call-text-back as a recurring retainer.
Watch on YouTubeKoernerThe Simplest $10K/Month Business Most People Miss [NO ADS • FULL EPISODE]
Rachel Smith's community-board ad business at ~$3,200 profit per board, ~$10-15K/month overall by upselling websites, reputation and AI automation.
Watch on YouTubeside-hustle-schoolEp. 3194 - First $1,000: Marketer Sells Simple Fixes to Dental Clinics
A digital marketer hit his first $1,000 fixing broken Google Business Profile listings for orthodontic practices, billing local clinics for visibility cleanups.
Listen on Side Hustle SchoolIsenbergThe 6 Best AI Agency Niches to Make $50K/mo (Data-Backed)
Cody Schneider pitches five productised services to $40-80K/month in six months — med-spa AI marketing at $2-3K/month per client ($1.4-2M revenue per location), beauty-ecom Facebook ads, voice AI agents and webinar repurposing.
Watch on YouTubeKoernerThe Best Low Budget Online Business To Start Right Now
Chris pitches database reactivation on GoHighLevel — automated SMS/email, A/B testing, upsell flows — as the easiest foot-in-the-door service to start.
Watch on YouTubeMFMThis Year's Best Twitter Accounts to Follow
Sam and Shaan curate the year's best Twitter accounts to follow; mostly taste-making with a related clips contest paying up to $10k mentioned in the description.
Watch on YouTubeKoerner4 Business Ideas You Can Start with $0 in 2026
Chris and Nik cover four $0 ideas — Insta Close Friends monetisation, negative-COGS (paid-to-acquire products), lake-weed removal and time-lapse video marketing for home services.
Watch on YouTubeKoernerWatch Me Judge 9 Of Your Business Ideas, Live!
Koerner rates 9 pre-submitted business ideas live — including HVAC bidding platform, AI repair tool, web dev for SMBs and other software-shaped candidates.
Watch on YouTubeCodie SanchezYou Don't Need To Start A Business, Just Buy One Of These
Codie grades digital agency among the best businesses to start or buy in 2026, scoring it on margin, scalability and AI-proofing.
Watch on YouTubeKoernerQuit Waiting. Start This Simple Business with $0
HoldCo Bros brainstorm scrappy local-service growth tactics — QR-code rocks, FB-group lead-gen, LLM SEO, local partnerships — emphasising low-cost tactics with real results.
Watch on YouTubeIsenbergI can't believe he gave away these GENIUS 7 profitable startup ideas (watch this)
Cody Schneider pitches 7 service businesses for first-time founders — local marketing agency, TikTok SEO service, QuickBooks app studio, newsletter acquisition, A&R talent agency.
Watch on YouTubeMFMYou Have 70 Days to Win the Year
Year-end 70-day execution push with marketing strategy, monument economics and VC commentary; mostly strategic, not a specific local-agency pitch.
Watch on YouTubeKoernerWe Turned Random Words Into $20K/Month Businesses Ideas
Chris and Sam Thompson random-word brainstorm for $20K/month businesses — office-themed chess set, blue-collar Stoicism community, Full Lounge nightclub marketing agency, garage cleanouts.
Watch on YouTubeMFM2 Side Hustle Ideas That Could Turn Into A $1,000,000 Business In 2022
Sam and Shaan pitch 'Baller Doctors' (a doctor marketing/patient-acquisition agency) and a 'Legacy Summit' (boomer business exit retreat) as turnkey operatorships.
Watch on YouTubeKoernerThe Most Overlooked $1K/Hour Business Anyone Can Start
No take is available for this episode.
Watch on YouTubeKoernerHow to Find Customers for Your Home Service Business
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Watch on YouTubeMFMWhy Today Is the Day to Ask For a Raise | My First Million #216
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Watch on YouTubeacquiring-mindsNo SBA, No Investors: The Liquidity Access Line | Brian Jungles Interview
Brian Jungles, a former Adobe account director, bought City Publications Atlanta, a direct-mail advertising business serving home-services companies since 1996, for ~$400K funded via a Liquidity Access Line. He runs it solo with no payroll, targeting $1M.
Watch on YouTubeKoerner$250k Profit/Year Print Shop Profit but Feeling Trapped
No take is available for this episode.
Watch on YouTubeside-hustle-school#235 - Man Earns $85,000 Promoting Mexican Avocados on Snapchat
Episode #235 follows a man who earned $85,000 designing and placing Snapchat geofilter campaigns for brands like Mexican avocado marketers. The episode covers a low-overhead service model for local events and restaurants.
Listen on Side Hustle Schoolside-hustle-school#1935 - Orthodontic Marketer Knows the Drill
Episode #1935 profiles a marketer running a niche agency serving orthodontists, leveraging specialty familiarity to charge premium fees.
Listen on Side Hustle Schoolside-hustle-school#2123 - First $1,000: “I have 3 clients and $4,000/month in retainer fees…”
A Toronto social media manager runs a side hustle earning $4,000 a month in retainers from just three clients while keeping her day job. The segment covers how she landed and retained local SMB clients.
Listen on Side Hustle Schoolside-hustle-school#2697 - First $1,000: Instagram Growth Guru Boosts Local Businesses
An Instagram growth specialist turned social-media skills into a side business serving local businesses, moving from follower-growth tactics to a profitable local-business service that hit its first $1,000.
Listen on Side Hustle Schoolside-hustle-school#1184 - Digital Marketer Makes Money Marketing Himself
An underpaid in-house digital marketer uses his own marketing skills to land clients for himself, turning day-job expertise into an independent client practice.
Listen on Side Hustle SchoolKoernerThe Most Underrated Way to Make $50K/Month
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Watch on YouTubeKoernerI Found a Perfect Business That Anyone Can Start
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Watch on YouTubeKoernerThe Smart Way to Start Small and Still Win Big
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Watch on YouTubeKoernerThe Most Overlooked $3K/Day Side Hustle Anyone Can Start (with $0)
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Watch on YouTubeIsenbergMy 2024 Year in Review (net worth update etc)
Greg Isenberg's year-end review notes Late Checkout Agency is booked with billion-dollar brands and started taking equity, and Boring Marketing crossed $100M managed ad spend.
Watch on YouTubeKoernerHow To Start a Mobile Detailing Business with $500 (Everything You Need To Know)
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Watch on YouTubeKoernerIs Lawn Leveling the Next Big Home Service Idea?
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Watch on YouTubeKoernerex-tesla guy turns school bus into a fortune
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Watch on YouTubeKoernerSecrets to Starting a Dumpster Rental Business
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Watch on YouTubeKoernerHow Do You Grow an 8 Figure Destination Wedding Business?
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Watch on YouTubeKoernerHow This Entrepreneur Makes Over $10m per Year Selling Cabin Kits
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Watch on YouTubeTools people use for this
Funnels, email/SMS, pipelines and client sub-accounts in one platform — the usual stack for a service agency.
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