Complete Guide to NestJS Real Estate API

Building a robust real estate API with NestJS has never been easier. In this comprehensive guide, we'll walk through creating a production-ready backend for property management.

What We'll Cover

• Setting up NestJS with TypeScript
• Database design with Prisma
• Authentication & Authorization
• Property CRUD operations
• Image upload handling
• API documentation with Swagger

Getting Started

First, let's set up our NestJS project:

npm i -g @nestjs/cli
nest new real-estate-api
cd real-estate-api

Database Schema

Our property model will include:

model Property {
  id          String   @id @default(uuid())
  title       String
  description String?
  price       Decimal
  bedrooms    Int
  bathrooms   Int
  area        Float
  location    String
  images      String[]
  createdAt   DateTime @default(now())
  updatedAt   DateTime @updatedAt
}

Key Features

1. Property Management

• Create, read, update, delete properties
• Advanced filtering and search
• Pagination support

2. Image Handling

• Multiple image upload
• Image optimization
• CDN integration

3. Authentication

• JWT-based authentication
• Role-based access control
• API key management

API Endpoints

GET    /api/properties     - List properties
POST   /api/properties     - Create property
GET    /api/properties/:id - Get property
PUT    /api/properties/:id - Update property
DELETE /api/properties/:id - Delete property

Best Practices

1. Validation: Use class-validator for DTO validation
2. Error Handling: Implement global exception filters
3. Logging: Add comprehensive logging
4. Testing: Write unit and integration tests
5. Documentation: Use Swagger for API docs

Deployment

For production deployment:

# Build the application
npm run build

# Start production server
npm run start:prod

Conclusion

With NestJS, building a scalable real estate API becomes straightforward. The framework's modular architecture and TypeScript support make it perfect for enterprise applications.

Ready to build your real estate platform? Start with this foundation and customize it for your specific needs!

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