The Short Answer
- Simple internal tool or admin dashboard: 4 to 8 weeks
- Client portal or booking platform: 6 to 12 weeks
- SaaS MVP with billing: 8 to 16 weeks
- Complex multi-tenant platform: 4 to 9 months
These assume a competent development team working focused hours on your project. They are not padded estimates - they reflect what is actually required to build production-grade software.
Why Web Apps Take Longer Than Websites
A marketing website displays information. A web application manages state, processes data, handles permissions, and maintains consistency across users and sessions. The difference is substantial.
Where a website might have 10 to 20 pages to design and build, a web app might have 50 to 100 distinct views, states, and interactions. Each user action needs to be handled, validated, stored correctly, and reflected back accurately - across devices, browsers, and network conditions.
The Four Phases and Their Timelines
Phase 1: Architecture and Design (1 to 3 weeks)
Before writing a line of code, the right team will define the data model, API structure, authentication approach, and core user flows. Skipping this phase is how projects end up being rebuilt six months later. A well-designed architecture takes time upfront and saves months on the backend.
Phase 2: Core Backend and Auth (2 to 4 weeks)
Building the foundation: database schema, authentication system, user management, email setup, and the API endpoints that power the core features. This is invisible work that most clients do not see but determines how stable and scalable everything else will be.
Phase 3: Feature Development (4 to 10 weeks)
Building the actual features your users interact with. Timeline scales directly with scope - every feature that is added to the spec extends this phase. The most common cause of timeline overruns is feature creep during this phase.
Phase 4: Testing, Refinement, and Launch (2 to 4 weeks)
QA, bug fixes, performance optimization, security review, and deployment setup. A proper launch includes staging environment testing, data migration if needed, and monitoring setup.
What Makes Projects Take Longer
- Undefined requirements. The single biggest cause of delays is a scope that changes during development. Every time a new requirement is added, timeline extends.
- Third-party dependencies. Waiting on API credentials, design assets, or content from the client adds dead time between phases.
- Complex integrations. Connecting to Salesforce, QuickBooks, or other enterprise systems takes longer than connecting to standard APIs.
- Revision rounds. Extensive design revision rounds before development begins save time. Extensive design changes after development starts cost significant time.
How to Move Faster
The fastest way to ship a web app is to start with a locked scope. Before development begins, define exactly what the MVP includes and commit to not changing it. Every feature you add post-scope adds weeks, not days.
The second fastest thing you can do is have all your content, assets, and credentials ready on day one - logo, copy, brand guidelines, API keys for third-party services, domain access. Waiting on these things is pure dead time.
How 47 Industries Works
We deliver a detailed scope document and fixed-price proposal before any work begins. Timelines are defined up front. We work in focused phases and give clients visibility into progress throughout. Web applications start at $10,000 for simple tools and scale based on feature scope.
