Most WordPress maintenance retainers aren’t written down anywhere both parties have signed. The client gets a monthly invoice. The vendor has a general idea of what’s included. And the actual scope — what gets done, what response time the client can expect, and who owns each job — exists somewhere between a sales email and a vague mutual understanding. That arrangement holds until something breaks, and then it unravels fast.
This is a contract-ready service-level agreement (SLA) template you can hand directly to a vendor or drop into a request for proposal (RFP). It’s a DOCX file, version 1.0, and it opens in Word, Pages, or Google Docs. Fill in the blanks, adjust the thresholds to match your engagement, and have a lawyer review it before it binds anyone to anything — the template gives you the structure; your lawyer makes it enforceable in your jurisdiction.
The more useful application, though, is the one nobody tells you about when they’re selling you a retainer: download it to audit what you’re already paying for. Run it against your current agreement — or your current absence of one — and see which sections have no answer.
The three jobs a maintenance retainer is supposed to cover
A WordPress site in production has three maintenance obligations that run in parallel. Security: ongoing vulnerability monitoring, plugin and core updates with change-management discipline, and a documented response plan when something is actively exploited. Performance: baseline monitoring against agreed thresholds, capacity review when traffic patterns change, and someone who actually owns the regression when a plugin update slows page load. Editorial: content updates, media management, form adjustments, and the category of small changes that keeps the site accurate and functioning for the people using it.
The first two show up in almost every retainer description. The third one hides. It hides behind the phrase “as needed” — which sounds like inclusion and bills like exclusion. When editorial work arrives, the vendor treats it as out-of-scope change requests and invoices accordingly. The client assumed it was covered. The invoice is the moment they find out it wasn’t.
A well-built SLA names all three jobs explicitly. It assigns a named owner to each one, defines what’s included and what triggers an additional charge, and sets a response-time expectation per severity level. The template is structured around that discipline.
Response times, by severity and tier
Response time is not resolution time. That distinction matters and the template states it explicitly: a response-time commitment means a qualified person has acknowledged the issue and started working it, not that it’s been fixed. Resolution depends on variables no SLA can fully predict — the nature of the problem, third-party dependencies, hosting environment specifics. Don’t let a vendor promise a resolution time without qualifying what “resolution” means. That’s the clause where ambiguity hides.
The template includes the following defaults, which you edit to match your agreement. They’re illustrative thresholds — reasonable starting points built from how these tiers actually function at the maintenance-Essential ($650/month), maintenance-Active ($1,800/month), and maintenance-Concierge ($4,000/month) levels. Higher tiers buy faster initial response AND wider coverage windows: Essential covers business hours; Concierge covers seven days.
| Severity | Essential $650/mo | Active $1,800/mo | Concierge $4,000/mo |
|---|---|---|---|
| Critical — site down, active security breach, complete checkout failure | 4 business hours | 2 hours | 1 hour, 7 days |
| Major — significant feature broken, performance regression, form failure | Next business day | 4 business hours | 2 hours |
| Minor — cosmetic issues, non-blocking errors, editorial requests | 5 business days | 2 business days | Next business day |
These are defaults in the template. Adjust them to reflect your actual agreement with your vendor, and make sure both parties sign off on whatever thresholds you land on.
The clause that actually tells you whether the vendor trusts the relationship
Most retainer agreements cover what the vendor will do. The transition-out clause covers what happens when the relationship ends — and it’s the clause most SLA templates leave out entirely.
The template includes a termination section that specifies what the vendor hands over: administrator credentials for every platform, a current and restorable backup, documentation of any custom code in scope, and a complete list of third-party accounts, licenses, and application programming interface (API) keys associated with the site. The timeline for handover is negotiable; the list of what gets handed over isn’t.
In my experience, naming the exit clause explicitly is the most trust-building section in the entire document. A vendor who pushes back hard on transition-out obligations is telling you something about how they plan to retain you. A vendor who accepts it without friction is telling you something different. The clause doesn’t have to be adversarial — it’s just honest about the fact that engagements end, and both parties deserve a clean handoff when they do.
Three ways to use it
Writing a new RFP. Drop the template sections into your RFP framework. Use the severity table as the basis for your SLA requirements section. Vendors who can’t respond to named obligations with named commitments aren’t ready for a managed-service engagement at this level.
Evaluating a vendor you’re considering. Share the template with the vendor before the engagement starts and ask them to mark which sections they accept as written, which they’d modify, and which they won’t commit to. Their answers tell you more than their sales deck does.
Auditing the retainer you’re already paying for. Go section by section. If your current agreement has no answer to a section — response times, named owner, transition-out — that gap is a conversation you need to have before something breaks and you need to have it under pressure instead.
For reference on what each maintenance tier should cost before you sit down with the template: the calculator gives you the budget; the SLA template tells you what that budget should buy.
Where I’m coming from with this
I’ve been working in WordPress since 2007. I have 19 plugins published on WordPress.org — some of them have been in active use for over a decade, which means I’ve been maintaining production code across major WordPress versions for longer than most retainer agreements have existed. The discipline that goes into maintaining published plugins at scale is the same discipline this template is trying to put into a maintenance retainer: defined scope, documented owners, agreed response expectations, and a clean exit when the time comes.
The template isn’t proprietary to how I work. It’s a starting document that any practitioner or procurement team can use. I built it because I kept having the same conversation with clients who’d inherited retainers with no written terms, and writing the conversation down seemed more useful than having it one organisation at a time.
What this template doesn’t do
It’s not a finished contract. It’s a structure — the clauses, the tables, the definitions — that a lawyer can turn into an enforceable agreement for your jurisdiction. Canadian, American, and UK contract law all have different requirements for service agreements, limitation of liability clauses, and dispute resolution provisions. The template gives a lawyer something to work from rather than something to start from scratch. Have them review it before anyone signs anything that’s meant to bind anyone.
It also doesn’t model every possible engagement shape. If your site runs on a specialised hosting arrangement, if you have a development team in-house that shares maintenance duties, or if your editorial workflow involves multiple stakeholders with different approval chains, the template will need additional clauses those situations call for. It covers the common ground well; the edge cases are yours to build out.
If your retainer situation is more complicated than a template can sort out — legacy code, multiple vendors with overlapping scope, inherited technical debt that makes the security section hard to price honestly — I’m happy to work through it with you. That kind of review is what the maintenance-Essential engagement is built around.
