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PlanBuildAI AI in Construction

Custom Software Development

Custom software and web applications

We build web applications and internal business software that fit the way your team actually works — replacing spreadsheet workarounds and disconnected tools with one system that is secure, maintainable and yours.

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Covers: Web Application Development · Custom Business Software

What our team does

Off-the-shelf software covers the common case. When your process is the thing that sets you apart, or the spreadsheets holding it together have become a risk, custom software is often the cheaper option over time. We start small, release early and grow the system as it proves its value.

  • Custom web applications

    Responsive browser-based applications with user accounts, roles and permissions, built to work on desktop, tablet and phone.

  • Internal business tools

    Systems for approvals, job tracking, inspections, quoting or resource planning that replace shared spreadsheets and email chains.

  • Dashboards and reporting

    Live views of the numbers that matter, drawn from your existing databases and applications, with exports for the people who still need Excel.

  • Customer and supplier portals

    Secure areas where clients or subcontractors submit information, track status and download documents without emailing your team.

  • Mobile-friendly field apps

    Web apps designed for site use: large touch targets, photo capture, and forms that tolerate poor connectivity.

  • Modernising legacy systems

    Moving business-critical tools off ageing desktop software or macros onto maintainable web technology, in planned stages.

Problems we help solve

  • A business-critical process lives in a spreadsheet that only one person fully understands.
  • Staff re-enter the same information in several tools, and the copies drift out of sync.
  • Customers and subcontractors email files back and forth because there is nowhere to share them properly.
  • Off-the-shelf software forces your team into workarounds or charges for features you never use.
  • An existing in-house application is hard to change, poorly documented or no longer supported.

What you receive

  • Agreed requirements, user roles and screen flows before development starts
  • Working software released in increments you can try and give feedback on
  • Automated tests for the core business rules
  • Deployment to your hosting or a managed environment, with backups configured
  • Full source code in your repository, plus administrator and developer documentation
  • Optional ongoing maintenance and improvement under a separate agreement

The exact deliverables for your project are listed in your written proposal.

Technologies we use

We choose tools for your requirements, existing systems and the team that will maintain the result — not the other way round. Typical choices include:

  • PHP
  • TypeScript
  • React and Next.js
  • Python
  • MySQL / MariaDB
  • PostgreSQL
  • REST APIs
  • Tailwind CSS
  • Linux and cPanel hosting
  • Cloud hosting where needed

How the process works

Every software project follows the same transparent path. You always know what happens next and nothing is built before you have agreed the scope in writing.

  1. Step 1: Request

    You describe the problem, the systems involved and any constraints in a short form. Attach documents if they help.

  2. Step 2: AI-assisted qualification

    An AI assistant organises the request and flags missing details. It does not price or approve anything.

  3. Step 3: Review by our engineers

    An engineer on our team reads the request, checks feasibility and contacts you with any questions.

  4. Step 4: Written proposal

    You receive scope, deliverables, timeline, price and assumptions in writing — nothing is implied or hidden.

  5. Step 5: Agreement

    Once you accept, we put a formal agreement in place before any build work starts.

  6. Step 6: Delivery

    We build in short, reviewable increments, test against the agreed acceptance criteria and hand over.

Frequently asked questions

It depends on scope, integrations and how polished the first release needs to be. After reviewing your request we send a written proposal with a fixed price or a clearly bounded estimate, and the assumptions behind it.

Yes, and we usually recommend it. A focused first release that solves the most painful part of the process lets you test the idea with real users before investing further.

You do, for the work you commission, as set out in the agreement. We deliver the code into a repository you control along with the documentation needed to maintain it.

Wherever suits you: your existing servers, standard shared or cPanel hosting, or a cloud provider. We recommend an option based on your security, budget and support needs.

We can, under a separate maintenance agreement covering updates, security patches and small improvements. If you prefer to take it in-house, we hand over everything your developers need.

Related services

Looking for something else? See all our services.

Start your software project

Tell us what you need in a few minutes. An engineer on our team reviews every request and replies with questions or a written proposal — scope, timeline and price included.

Start your project

Or start with: Web Application Development Custom Business Software

Free and without obligation — work starts only after you accept a written proposal.