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When We Take Over a Client Site Another Developer Built, How Do We Find the Problems Before We Agree a Maintenance Price?

Web design agencies take over sites built elsewhere and find the problems after pricing a plan. We build an intake audit that checks the site before you quote.

Updated 3 min readBy SpiderHunts Technologies

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Quick answer — TL;DR

Studios regularly take on client websites built by another agency or a freelancer who has moved on. The site looks fine from the front, and the problems appear only after the maintenance plan is agreed: abandoned plugins, edited core files, no backups, an old PHP version, a page builder nobody else uses. We build an intake audit that scans a site, with the access the client can give, and produces a clear risk summary before you quote.

A simple maintenance plan, apparently

A business approaches the studio: their previous developer has stopped responding, and they need someone to look after their WordPress site. The site looks tidy. The owner agrees a standard maintenance plan at the usual price.

In the first week the developer finds the site running an old PHP version the host is about to retire, a theme with edited core files that cannot be updated, several plugins that were abandoned by their authors years ago, and a premium plugin with an expired licence that was quietly nulled. There are no backups. The first month of maintenance turns into a rescue project, at the price of a routine plan.

Why inherited sites are underpriced

  • The front end looks fine, and that is what the prospect and the studio see first.
  • Access to the server and admin is often only available after the client signs.
  • Checking a site properly takes a developer time, which feels expensive before a sale.
  • The client does not know what their previous developer did, so they cannot warn you.
  • Studios use a standard plan price for every site regardless of condition.

The studio is pricing a used car by looking at the paintwork. The engine is where the cost is.

What skipping the audit costs

Rescue work is done inside a maintenance fee that was never meant to cover it. Problems found after signing create awkward conversations, as the client feels the price has changed after the deal. Some sites carry risk the studio would not have accepted if it had known, such as nulled plugins or an unsupported server. Developer time goes on sites that do not make money.

The intake audit we build

  1. A public scan runs first, needing only the URL: platform and version where visible, PHP version where exposed, SSL, plugins and themes detectable from the front end, page speed, obvious errors and mixed content.
  2. With limited access that the client can grant before signing, such as a read-only admin user, the audit reads the full plugin and theme list, versions and update status.
  3. Plugins and themes are checked against public vulnerability databases and marked as current, outdated, abandoned or known vulnerable.
  4. Core and theme files are compared with the official versions to spot direct edits.
  5. Backup status, hosting environment and PHP version are recorded.
  6. The results produce a risk summary with a simple rating per area and a list of the work needed before routine maintenance can start.
  7. The summary feeds your proposal: a standard plan for healthy sites, or an onboarding fix-up quoted separately for the rest.
Area checkedWhat raises the risk
Plugins and themesAbandoned, outdated or with known vulnerabilities
Core filesDirect edits that block updates
ServerOld PHP version or unsupported host
LicencesPremium plugins without valid licences
BackupsNone, or never tested
Page buildersUncommon builders that tie the site to one tool

The audit reports what it finds. Whether you take a site on, and at what price, is still your decision.

Pricing the next inherited site

A new enquiry comes in for a site whose developer has gone. The studio runs the public scan and asks the client for a temporary read-only admin user. The audit shows several abandoned plugins, a theme with edited files and no backups. The proposal includes a one-off onboarding fix, clearly explained with the audit attached, followed by the standard plan. The client understands why, because the evidence is in front of them.

Do inherited sites surprise you?

  • You take over sites built by other developers.
  • Maintenance plans are priced before anyone looks inside the site.
  • The first month on an inherited site is often a rescue.
  • You have found nulled or unlicensed plugins after taking a site on.
  • Every site gets the same plan price regardless of condition.

FAQ

Frequently asked questions

The questions readers ask us after this guide.

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Can the audit run without any access?

The public scan needs only the URL. A fuller audit needs a read-only admin user, which clients can usually create easily.

Does it work for sites that are not WordPress?

The public scan works on any site. The deeper checks are strongest on WordPress, with partial support for other common platforms.

Will it fix the problems it finds?

No. It lists them with a suggested order of work. The fixes are done by your developers, or quoted as onboarding work.

Can we share the report with the client?

Yes. A client version explains findings in plain language, which helps justify any onboarding work.

What does the cost depend on?

How deep you want the checks to go, which platforms you take on, and how it connects to your proposal process.

Keep reading

More on Problems We Solve

Start here

Tell us where your web projects get stuck

Describe how a website project runs at your studio, from signed proposal to launch and the maintenance plan afterwards, and which tools you use, such as Figma, WordPress, Basecamp, ManageWP or Xero. We will tell you what we would build and what we would leave alone, and if a plugin or a setting you already have would solve it, we will say so.

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