How do you start an app development agency business in 2027?

Startup costs: Low-medium — $3K-$12K. Dev tooling (JetBrains, GitHub, Figma, Linear) ~$200/mo, Apple Developer ($99/yr), Google Play ($25 one-time), laptop, LLC, contractor pool you pay per project. AI coding assistants (Cursor, Claude Code) ~$200/mo are now table stakes.

LLC / contracts / insurance: LLC mandatory. E&O + cyber liability $1.5K-$4K/yr — you're shipping code that touches user data. Contracts must spell out: IP transfer on full payment, source code escrow option, post-launch warranty window (usually 30-60 days bug fixes free), change-order process (this kills agencies that don't have it).

Customer acquisition: Clutch + DesignRush profiles still drive ~20% of inbound for app shops. Niche positioning ("HIPAA-compliant healthcare apps," "B2B field-service apps") beats generalist by 3-5x on close rate. Referrals from VCs, accelerators, and product designers are the goldmine. Cold outbound to Series A/B founders who just raised.

Revenue model: Fixed-bid project ($30K-$250K MVPs, $100K-$1M+ for full builds). Monthly retainer for maintenance ($3K-$20K/mo). Hourly only for discovery phase ($150-$300/hr).

Year-1 reality: $100K-$400K with 2-3 contractors and 2-4 projects. Margin is 25-40% if you scope tightly. Most agencies fail because they underbid scope and eat the change orders. Year 1 cash flow is the hardest part — projects pay 50/40/10 and gaps kill you.

Honest: AI-assisted coding cut delivery time 30-50% but clients now expect it priced in. Margins compressed. Win on UX and PM rigor, not raw dev hours.