The most common question I get before a project starts is some version of “how much does this cost?” And the most common answer founders get from developers is “it depends.” That’s not wrong — but it’s not useful either. You need a number to work with before you can make a real decision.
Here’s what web app development actually costs in 2026, broken down by type, scope, and who builds it.
Why Costs Vary So Much
Three variables drive almost all of the price difference: complexity of the core feature set, who you hire, and how well-defined the scope is before work starts.
A vague brief handed to an agency will cost twice as much as a tight spec handed to an experienced freelancer — for the same end result. Scope clarity is the single highest-leverage thing you control before a project starts.
The numbers below assume a defined scope. Add 20–40% if yours isn’t.
Cost by App Type
These are honest ranges based on real projects, not marketing estimates.
| App Type | What’s Included | Realistic Cost Range | Timeline |
|---|---|---|---|
| Simple web app | Auth, CRUD, basic UI, deployment | $5,000–$12,000 | 3–6 weeks |
| SaaS MVP | Auth, subscriptions, dashboard, email | $12,000–$25,000 | 6–10 weeks |
| AI-powered app | LLM integration, RAG pipeline, API | $18,000–$40,000 | 8–14 weeks |
| Marketplace | Two-sided, payments, listings, reviews | $30,000–$70,000 | 12–20 weeks |
| Enterprise platform | SSO, roles, audit logs, integrations | $60,000–$150,000+ | 4–9 months |
These assume a solo senior developer or small team. Agency rates push every number up by 40–80%.
Cost by Who You Hire
Who builds it matters as much as what you’re building.
| Developer Type | Hourly Rate | Best For | Watch Out For |
|---|---|---|---|
| Offshore agency | $25–$60/hr | High volume, defined specs | Communication gaps, handoff quality |
| Freelance generalist | $50–$100/hr | Simple apps, tight budgets | Limited depth on complex problems |
| Senior freelancer | $100–$180/hr | MVPs, SaaS, AI integration | Higher upfront cost, faster delivery |
| Boutique agency | $150–$250/hr | Full-service, ongoing support | Overhead costs, slower iteration |
| Big agency | $200–$400/hr | Enterprise, compliance-heavy work | Rarely worth it for early-stage |
For most early-stage products I’d recommend a senior freelancer or a small specialist team. You get senior-level thinking without agency overhead, and projects move faster because there’s no account manager layer between you and the person writing code.
What Drives the Cost Up
Every project has a base cost and then a set of decisions that push it higher. These are the most common ones — and how much each typically adds:
| Addition | Cost Impact |
|---|---|
| Mobile-responsive design (custom) | +$2,000–$5,000 |
| Third-party API integrations (Stripe, Twilio, etc.) | +$1,000–$3,000 each |
| AI/LLM features (chatbot, summarization, search) | +$5,000–$15,000 |
| Admin dashboard with analytics | +$3,000–$8,000 |
| Real-time features (WebSockets, live updates) | +$3,000–$7,000 |
| Multi-language / localization | +$2,000–$6,000 |
| Custom design (not a template) | +$3,000–$10,000 |
The fastest way to double your budget is to add these one at a time after work has started. Decide what’s in scope before the first line of code — not during.
Ongoing Costs After Launch
Build cost is a one-time number. Running cost is every month forever. Most founders underestimate this.
| Cost Category | Typical Monthly Range |
|---|---|
| Hosting (Vercel, Railway, AWS) | $20–$300 |
| Database (managed Postgres, etc.) | $15–$150 |
| AI API usage (OpenAI, Anthropic) | $50–$500+ depending on volume |
| Email service (Resend, Postmark) | $10–$80 |
| Monitoring and error tracking | $0–$50 |
| Developer retainer (bug fixes, updates) | $500–$2,000 |
A typical early-stage SaaS runs $200–$600/month in infrastructure before you have significant traffic. AI-powered apps can spike quickly if you’re not monitoring token usage — build usage caps and cost alerts in from day one.
The Mistakes That Make Projects Cost More Than They Should
Starting without a defined scope. “We’ll figure it out as we go” is the most expensive approach to software development. Every undefined decision becomes a renegotiation mid-project.
Choosing price over fit. The $3,000 quote that delivers unusable code costs more to fix than the $12,000 quote that ships something clean. I’ve inherited enough broken projects to say this with confidence.
Treating the MVP like the final product. Building every feature you’ll ever want on day one means spending $80,000 where $15,000 would have validated your idea. Launch lean, iterate with real feedback.
No budget for post-launch. The work doesn’t stop at launch. Bug fixes, user feedback, performance issues, new features — plan for at least 2–3 months of post-launch development budget.
What a Realistic Budget Looks Like
If you’re an early-stage founder with $20,000–$30,000 to spend, here’s how I’d allocate it: $15,000–$22,000 on a focused MVP build, $3,000–$5,000 held back for post-launch iteration, and $2,000–$3,000 for the first three months of infrastructure and tooling. That’s enough to build something real, launch it, and have runway to fix what users tell you is broken.
Anything under $10,000 should be a micro-MVP — one core workflow, minimal UI, no extras. Anything over $50,000 without a validated user base is a risk worth questioning hard.
If you want a precise estimate for your specific project — not a range, an actual number with a scope behind it — let’s talk. I’ll give you a straight answer.