Custom development
Seatac Parking Suite
PHP modules implement pricing, reservation records, WordPress hooks, frontend components, and a dedicated REST interface.
Client system · Booking, payments & mobile
Airport Parking Reservation & Management Platform
A connected website, custom reservation logic, payment integration, operational administration, and mobile app implementation for an independent parking business.
A business process that continues after checkout
SeaTac International Airport Parking needs customers to choose parking dates, understand pricing, and make a reservation. The business also needs usable reservation records, date-based availability controls, pricing administration, and a way to connect payment status to bookings.
Kafawebs’ work connects these needs through a customer-facing WordPress website, custom parking plugins, payment services, and a Flutter companion app implementation. The scope goes beyond the marketing pages to the rules and records behind each booking.
This project serves an independent parking business. It does not imply affiliation with Seattle–Tacoma International Airport or the Port of Seattle.
How the reservation workflow fits together
01 · ChooseArrival, departure, and parking type
02 · QuoteDate-based pricing, fees, and availability rules
03 · PayCheckout connected to a reservation
04 · ManageBooking status, reference, and operational records
The public website starts with entry and exit dates and times. Reviewed custom code implements inclusive calendar-day pricing, seasonal rates by date, parking types, configurable fees and tax, and manually managed sold-out dates. These are explicit business rules rather than an assumption that all bookings share one flat rate.
Reservation administration
The parking suite defines reservation, parking type, seasonal pricing, and sold-out records, with a dedicated WordPress administration area. A related management plugin contains daily operational views, reservation ingestion, status controls, ticket printing, and supporting data tables.
The reviewed availability model includes administrative sold-out controls. It is not described as automatic, real-time capacity allocation unless that additional behavior is verified in a deployed system.
Custom logic, established payment services
Integration
Stripe payment workflows
Reviewed code connects hosted checkout and mobile PaymentSheet flows to booking records, payment confirmation, and webhook reconciliation.
Keeping payment and reservation state connected
A customer returning from a payment screen is not the only signal a booking system should rely on. The reviewed API includes payment confirmation and Stripe webhook handling so transaction updates can be reconciled with the reservation record. The implementation also contains pending-event handling and scheduled reconciliation logic.
JetFormBuilder and Stripe are third-party products integrated into the solution. Kafawebs’ custom development is the parking-specific business logic and integration code, not ownership of those third-party platforms. Refund and cancellation policies remain business decisions; this case study does not promise an unverified automated refund workflow.
A mobile interface connected to the same business system
The companion app source uses Flutter and Dart. Its implemented screens cover booking, customer sign-in, reservation lists and details, account views, payment success, and promotions. The API client communicates with a WordPress REST interface for quotes, bookings, payment setup, and reservation retrieval.
The payment screen invokes Stripe PaymentSheet and then confirms payment through the backend. Booking details include reservation status, dates, vehicle information, totals, and QR-code display for eligible bookings.
The app implementation has been verified in source. Public App Store or Google Play release listings and the current production API deployment have not been independently verified, so no download badges or release claims are shown.
Architecture verified in the reviewed code
Customer interfacesWordPress booking forms and Flutter app
Application layerCustom PHP plugins and sps/v1 REST routes
Business recordsReservations, rates, availability, and operational data
External serviceStripe checkout, PaymentSheet, and webhooks
Technology stack
- Web and backend: WordPress, PHP, hooks and filters, custom post types, custom database tables, and REST APIs.
- Booking integration: custom parking modules and JetFormBuilder integration.
- Mobile: Flutter, Dart, HTTP/JSON API communication, and the Flutter Stripe SDK.
- Payments: Stripe Checkout, PaymentIntents, PaymentSheet, and webhook handlers in the reviewed implementation.
Engineering decisions with practical business value
Centralizing date and pricing rules helps the website and app describe the same reservation. Linking transactions to booking records gives staff meaningful payment status. Separating customer screens from operational administration allows each interface to focus on its user’s task.
These are architectural benefits, not invented performance results. No unsupported claims are made about revenue growth, booking volume, uptime, or hours saved. The public website is live; management and mobile features described above are supported by the reviewed source, without implying that every local module is deployed in the current production version.
Start with your business process
What does your next system need to do?
Tell us who will use it, what needs to connect, and where the current process gets difficult. We will help define a practical next step.
