When can an SEO company optimize my entire site?
Over a series of phases, not on a single date. Whole-site work runs in an order: an audit, then fixes that change many pages at once, then the pages that matter most to your business, then the rest in scheduled batches. How long the whole sequence takes depends on how many pages and templates the site has, how much needs fixing, and how much work the budget covers each month. What a company should give you is a dated plan showing which pages fall in which phase, rather than one date by which “everything” will be done.
Why the work is phased
Pages do not contribute equally to a business, and your own Search Console Performance report shows which ones earn impressions, clicks, and inquiries. Treating every page as equally urgent spreads effort thin and delays work on the pages that carry the business.
Phasing is also what makes the results measurable. Google’s Search Console help on common tasks in the Performance report warns: “It can be difficult to determine if a specific change you made to a page directly caused an improvement in Search performance.” It explains that news events, periodic changes in user sentiment, and a competing site’s improvements also move the numbers, and that the way to measure a change is to check whether an improvement “maps closely in timing to your site changes, compared to similar time periods in the past”. If hundreds of pages change in the same week, no single change can be matched to its effect. Working in batches gives each change a date to measure from.
A workable order
An audit comes first, because it decides the order of everything else: crawling and indexing problems, slow or broken templates, missing or overlapping content, and the pages that matter most.
Fixes that apply across the site come next. A change to a shared template, such as the layout of every product page or the structure of category pages, reaches every page built on that template at once, which is why template work can move a large site further than editing pages one by one.
The highest-value pages follow: those that bring in inquiries or sales, and pages that already appear for relevant searches but earn few clicks, which the Performance report shows by page and query. Because they are already being shown, they are candidates for early attention.
Everything else is handled in later phases, each one a defined batch with its own start date and its own review.
What sets the pace
Size and structure come first: a site with a few dozen pages can be covered in fewer phases than one with thousands, and a site built on a handful of templates moves faster than one made of unique pages. The site’s condition matters too, since serious technical problems need fixing before page-level work pays off. Budget sets how many pages each phase can include. Your side counts as well: if your developers or approvers are needed for each change, their availability sets the pace as much as the company’s.
The plan to ask for
Ask for a phase plan that names the pages in the first phase and the criteria used to choose them, gives each phase a start date and a date for reviewing its results, and states how the template work fits in. A company that promises to optimize the whole site at once is describing a pace at which no change can be measured; a dated, phased plan is one you can hold it to.