Custom Web Development Services
End-to-End Custom Web Development that Drives Growth
Ready to build a platform around the way your business works? Three29 designs and develops custom business platforms, portals, and web applications for B2B and growth-oriented organizations, including AEC, manufacturing, SaaS, legal, and other professional services.
We combine strategy, UX, full-stack development, systems integration, and automation expertise to create tools that connect your data, streamline workflows, and help your teams work more efficiently.
Meet Three29’s Design and Development Team
We’re an award-winning digital marketing agency with over 16 years in business, headquartered in Sacramento, California and Jacksonville, Florida. Our web design and development team has a proven track record of building websites that drive traffic and sales, integrate with modern platforms, and scale with growing organizations.
Our fully remote team is distributed across the U.S. and has successfully partnered with businesses nationwide.
Clutch Top Global Agency
Clutch Champion – Top Performing
Clutch Top Web Design Company in CA
Clutch Top 1000 Firms USA
Three29 Clients
Featured Work
Three29 worked with CREtelligent on their Radius platform to reimagine their UI/UX for commercial real estate solutions.
In 2025, Statewide CDC, a non-profit organization specializing in SBA 504 loans, partnered with Three29 to build a custom SBA 504 Loan Calculator and landing page. As one of the top CDCs in the nation, Statewide CDC recognized the need for this essential site feature that many of its leading competitors already offered.
Client Results at a Glance
200%+
Increase in Organic Visitors
153%+
Website Conversions
41%+
More Products Sold
Real Customer Reviews and Testimonials, from Companies Like Yours
What Goes Into Our Custom Platforms
We design and develop custom software and platforms that manage business data, connect internal systems, and support complex workflows across departments, users, and locations.
Platform Architecture & System Design
We plan application structure, data models, and user flows to ensure platforms are reliable, maintainable, and adaptable as requirements evolve.
Full-Stack Development & Backend Engineering
Our team develops secure APIs, databases, and business logic that power internal tools, customer platforms, and automated workflows.
Systems Integration & Data Connectivity
We connect custom platforms with CRMs, ERPs, inventory systems, analytics tools, and third-party APIs to keep data synchronized across your organization.
Workflow Automation & Process Engineering
We design tools that streamline approvals, reporting, data entry, and operational handoffs to reduce manual work and errors.
Security, Access Control, & Compliance
Implementation of authentication, permissions, and data protection standards to safeguard sensitive business information.
Performance, Scalability, & Ongoing Support
Optimization of infrastructure, hosting environments, and application performance to support growth, reliability, and future expansion.
Web Dev Outcomes You Can Measure
Improved Operational Efficiency
Reduced manual work, fewer workarounds, and more consistent processes across teams.
Better Data Visibility and Reporting
Centralized access to accurate, up-to-date information for faster decision-making.
Scalable System Performance
Platforms that continue to perform as user volume, data complexity, and feature requirements grow.
Reduced Technical Debt
Cleaner codebases and modern architectures that lower long-term maintenance costs.
Stronger System Adoption
Tools that teams actually use because they fit existing workflows and priorities.
Long-Term Platform Stability
Reliable infrastructure designed for ongoing updates, integrations, and expansion.
Our Custom Web Development Process
Our custom development projects are structured, collaborative, and execution-focused. Every engagement includes a dedicated account manager and technical lead, supported by clear timelines, defined milestones, and ongoing communication.
1. Discovery & Technical Assessment
We begin with stakeholder interviews and system reviews to understand workflows, data requirements, integrations, and success criteria.
2. Project Kickoff & Planning
Our teams align on scope, priorities, technical architecture, and delivery timelines before development begins.
3. System Architecture & UX Design
We design application structure, user flows, and interface frameworks to support usability and long-term scalability.
4. Platform Development & Integration
Our engineers build core functionality, databases, APIs, and integrations with internal and third-party systems.
5. Testing, QA, & Stakeholder Review
We validate performance, security, and functionality while incorporating structured client feedback.
6. Launch, Training, & Support
We deploy the platform, train internal users, provide documentation, and support ongoing enhancements.
Real Reviews from Companies Like Yours
Frequently Asked Questions about Custom Web Development
Process & Collaboration
How does your custom development process work?
Our process includes discovery, technical planning, system architecture, interface design, development, testing, and deployment. Each phase includes structured reviews and stakeholder input.
Will we have visibility into development progress?
Yes. Clients receive regular progress updates, milestone reviews, and access to project documentation throughout the build.
Will we work directly with your development team?
Yes. You will collaborate with our full-stack engineers, technical leads, and project managers, supported by a dedicated account manager.
Can you work with our internal developers or IT team?
Absolutely. We regularly collaborate with in-house technical teams on architecture, integrations, security, and ongoing maintenance.
Do you provide documentation and handoff support?
Yes. We deliver technical documentation and training to support long-term ownership and system management.
Timelines & Support
How long does a custom development project take?
Timelines vary by scope and complexity. Most projects can range from several weeks to several months, depending on features, integrations, and testing requirements.
When can we expect to see working versions?
Clients typically review functional prototypes and staged builds throughout development, not just at launch.
How is progress tracked?
We manage timelines through defined milestones, sprint planning, and structured reporting.
Do you offer ongoing maintenance and support?
Yes. We provide support, enhancements, and long-term development options after launch.
Will we own the final platform and codebase?
Yes. Clients retain ownership of their systems and source code.
