Taking over an existing Laravel application: what to check before adding features

When you hire an agency to improve a Laravel application, the conversation usually starts with what you want built next. But the application already does things your business depends on. Some of that behavior may not be documented anywhere.

Before adding a feature, the incoming team needs to understand what the system does today, who controls it, and how they would notice a regression. These are general handover checks, not findings about any particular application. They are worth discussing whether you work with CodingWisely or another team.

Write down what must keep working

An inherited application contains years of decisions. Some were deliberate; others were workarounds. Something that looks like a bug may be a rule your operations team relies on every morning.

A rounding rule on an invoice, an email triggered by a status change, or a report that excludes certain records can all look odd and still be correct for the business.

Reading code helps, but the team also needs to talk to the people who use the application. Ask them to identify the workflows they cannot afford to lose, including background actions after a button is clicked. That list becomes a reference for later testing.

Include permissions. Which roles can view, change or export which records? A demonstration using an administrator account will not prove that an ordinary user is properly restricted.

Keep ownership with your company

Confirm who owns the repository, hosting accounts, domain and external services. Ideally, your company controls them, and developers receive access through individual accounts with two-factor authentication wherever supported.

Give each person the narrowest role they need. Avoid sending passwords or API keys in chat. Application secrets belong in approved secret storage; access to them should be deliberate.

If a legacy service only supports a shared login, handle it through a controlled vault rather than informal password sharing. Record the limitation so it can be addressed later.

When a developer leaves, removing their user account may not be enough. Review deploy keys, API tokens and other credentials they could still use. Plan any rotation so live integrations keep working: identify where a secret is used, update the affected systems, and verify the integration afterwards. Use overlapping credentials where the provider supports them.

Make staging useful and safe

Changes need somewhere to be tested before production. If staging does not exist, setting it up can be legitimate early work.

It should resemble the relevant parts of production and cover realistic cases: old records, unusual permissions, failed payments or whatever matters to your application.

Prefer generated, non-sensitive test data. An anonymized copy can help, but removing names alone is not sufficient; private details may remain in documents, free-text fields and logs.

Check that staging cannot send real customer emails, charge real cards or trigger live partner workflows. A test environment with production side effects creates its own risks.

Inspect dependencies before proposing upgrades

Ask for an inventory of the framework, language runtime, database and important packages. The team should check installed versions and their support status against current documentation, including local modifications that an upgrade might overwrite.

This turns a vague recommendation to upgrade everything into a decision you can evaluate. Some work may be urgent. Other changes can wait or be grouped with a feature that needs them.

You do not need to understand every package. You need to know which findings affect security, reliability or the work you want done next.

Find the work nobody sees on screen

Queued jobs, scheduled tasks and integrations are easy to miss during a handover. They might send reminders, process files, generate invoices or receive updates through webhooks.

Ask what runs, what triggers it, what it depends on and how the team would notice a failure. If the answer is that a customer would complain, that is useful information to have before adding more background work.

Monitoring ownership matters too. An alert is not much help if it goes to a former developer's inbox.

Test recovery, not just backup creation

A backup record does not prove that the application can recover from it. Ask for a restore test covering the database and any required uploaded files, with the steps recorded.

A restore environment containing real customer data needs appropriate access restrictions and protection. Disable external side effects, and agree how the test data will be securely removed when the exercise finishes.

Find out how recent the recovered data is and how long the restore takes. Those answers describe the interruption your business might face.

A successful restore is useful evidence alongside a tested deployment rollback path. Neither should be assumed to undo every kind of change, especially one that has altered data or affected an external service.

Start with a change small enough to learn from

A rewrite may eventually be justified. It should follow an assessment, because replacing an application means recovering its undocumented business rules as well as its visible features.

A small first change can reveal whether the incoming team understands the code, communicates clearly and can deliver through the actual release process.

Agree on acceptance before implementation: what must work, what must stay unchanged, and what evidence you expect. That might include a staging demonstration, focused automated tests, permission checks and a recovery plan. Ask for review by someone other than the author.

A handover checklist to bring to the first call

• Who owns the accounts, and who still has access?
• Which workflows and permissions must remain unchanged?
• Can staging test those workflows without live side effects?
• Which dependencies need attention, and why?
• Who monitors background jobs and integrations?
• Has recovery been tested, and what would it recover?
• What is the first change, and how will it be accepted?

These questions help you judge the proposed work before committing to a large feature list or rewrite.

If you have an existing Laravel application that needs maintenance or improvements, CodingWisely is happy to discuss the application and what you want to change.