Custom Web Application Development

Full-stack web applications built for your business. We design and develop custom software that streamlines operations, automates workflows, and scales with your growth — from dashboards and portals to internal tools and SaaS platforms.

What We Build

Whether you need a custom dashboard to visualize your data, a client portal to streamline communications, or a full SaaS product to bring your idea to market — we build web applications tailored to your exact needs. Looking for a standard business website instead? See our web design services.

Dashboards & Analytics

Real-time business intelligence dashboards that aggregate data from multiple sources and present actionable insights at a glance. Perfect for tracking KPIs, sales metrics, and operational performance.

Client & Member Portals

Secure portals where your clients or members can log in, view their information, submit requests, and interact with your business. Ideal for service companies, membership organizations, and B2B platforms.

Internal Tools

Custom tools built for your team to manage workflows, automate repetitive tasks, and replace spreadsheets. From inventory management to project tracking, we build what off-the-shelf software can't.

CRM Systems

Customer relationship management systems designed around your sales process. Track leads, manage pipelines, automate follow-ups, and integrate with your existing tools for a unified workflow.

Booking Platforms

Online booking and scheduling systems for appointments, reservations, or resource allocation. Reduce no-shows, automate reminders, and give your customers a seamless self-service experience.

SaaS Applications

Software-as-a-Service products built from the ground up. Multi-tenant architecture, subscription billing, user management, and scalable infrastructure to launch and grow your product. Need a mobile app to complement your SaaS? Explore our mobile app development services.

Technologies We Use

We build with a modern, proven tech stack that delivers fast, secure, and maintainable applications. Our approach prioritizes performance, scalability, and long-term reliability.

JavaScript / TypeScript
Node.js
PostgreSQL
Cloud Hosting
Secure APIs

We select the right tools for each project. Whether you need a lightweight SvelteKit app, a React frontend, or a robust backend with REST or GraphQL APIs — we build solutions that fit your requirements and budget. Browse our portfolio to see examples of our work.

Our Development Process

A transparent, collaborative process that keeps you informed and ensures the final product aligns with your vision.

1

Discovery & Planning

We start with a free strategy call to understand your business, goals, and pain points. We define scope, timelines, and deliverables so everyone is aligned from day one.

2

Design & Architecture

We design the user experience and technical architecture. You'll see wireframes and mockups before any code is written, ensuring the solution matches your expectations.

3

Build & Iterate

Development happens in sprints with regular check-ins. You'll have access to staging environments to test features as they're built and provide feedback along the way.

4

Launch & Support

We deploy your application, train your team, and provide documentation. Ongoing support and maintenance options are available to keep your app running smoothly.

Investment

Custom web application development projects typically start from $5,000, depending on scope and complexity. Simple dashboards or internal tools may fall in the lower range, while full SaaS platforms or complex integrations require a larger investment. Visit our pricing page for more details. Every project is different — we provide transparent, fixed-price quotes after our discovery call so you know exactly what to expect.

Frequently Asked Questions

What's the difference between a website and a web application?

A website is typically informational — it displays content, has contact forms, and maybe a blog. A web application is interactive software: users log in, perform actions, manage data, and use tools. Think dashboards, portals, booking systems, and internal tools. If you need custom functionality beyond a brochure site, you need a web application.

How long does it take to build a custom web application?

Timeline depends on scope. A simple internal dashboard might take 4–8 weeks. A client portal with authentication and core features could take 8–12 weeks. Full SaaS platforms with billing, multi-tenancy, and complex workflows often run 3–6 months or more. We provide a detailed timeline during the discovery phase.

Can you fix or improve my existing website?

Yes. Whether you need someone to fix a broken website, add new features to an existing app, or modernize legacy code — we can help. We'll assess your current setup, identify issues, and propose a plan to get things working or upgraded. Many clients come to us saying "I need to hire someone to fix my website" and we deliver. Not sure where to start? Read our guide on what to look for in a web developer.

Do you work with businesses outside San Antonio?

Absolutely. While we're based in San Antonio, TX, we work with clients across Texas and nationwide. Most of our collaboration happens remotely via video calls, shared project tools, and staging environments. Location is not a barrier.

What happens after the project is complete?

We provide full documentation, handoff training, and source code. Many clients choose ongoing maintenance plans for updates, security patches, and feature additions. We're here to support your application long-term — you're not left on your own after launch. Have questions? Reach out anytime.

Related Services

Ready to Build Your Custom Web Application?

Schedule a free 30-minute strategy call with Brandon Harding. We'll discuss your project, answer questions, and outline how Surmount can help you achieve your goals.

No obligation. No pressure. Just a conversation about your project.