How long does it take to build a website? Ask a builder and the answer is a few days. Ask a studio and it's six weeks. Both are telling the truth about different jobs. A standard custom build runs two to six weeks from kickoff to launch; the full range across real projects spans roughly four weeks to a year, depending on scope. The builder skipped straight to the part anyone can do alone. The studio is quoting everything else: the parts most people forget exist until they hit them.
Planning comes first, and it eats more calendar time than it looks like it should. This is where scope gets fixed: what the site needs to do, who it needs to convince, what content already exists, and what has to be written from scratch. A studio walks a client through this before touching a single pixel, because every hour spent here saves three later. Most clients treat planning as paperwork. It's actually the only phase where the client, not the studio, controls the pace. A vague brief costs a week before design even opens.
The single biggest cause of a slow build isn't the studio. It's the client's own content. Copy, photos, product details, testimonials: whatever the site needs to say has to exist before a page can be finished, and it's almost always the last thing ready. A builder site that goes live in an afternoon usually means the content was already sitting in a folder, written and approved, before anyone opened the builder. The phase didn't vanish. It happened earlier, off a clock nobody was counting.
Once scope and content are settled, design comes next: wireframes for structure, then the actual visual design, usually with a round or two of revisions before anyone signs off. Development follows, turning an approved design into a working site with real functionality behind it, not a static picture of one. Both phases compress on a simple brochure site and stretch hard on anything with logins, payments, or custom features. This is the part that looks, from the outside, like building the website. It's maybe half the actual timeline.
Then comes testing, the phase a site built alone usually skips entirely. Checking it on different devices. Clicking every link. Timing how fast it loads. Watching someone unfamiliar with it try to use it before it goes live. A site that loads and a site that's been tested aren't the same claim. The gap between them never shows up on launch day. It shows up three months later, in a support inbox full of people who couldn't find the contact page on their phone.
Launch isn't the end of the phase list, whatever the timeline graphics suggest. Every honest version of this process, from an agency's own workflow diagram to the formal development lifecycle taught in computer science courses, treats what comes after launch as its own ongoing phase: fixes, updates, small improvements, security patches. A website nobody touches after the launch party is a website quietly going stale. Budget attention for this too, not just for the build.
The honest answer is a range instead of a single number for one reason more than any other: how fast the client responds. A studio getting same day feedback and finished copy on time can run a project in six weeks flat. The identical project, with a week of silence between every round of feedback, can drift to ten or twelve. Build speed rarely changes. Decision speed does. Once scope and content readiness are actually known, the timeline stops being a guess and becomes a number someone can commit to.
None of this is a reason to dread the process. It's a reason to ask a studio, before signing anything, which phase your specific project is likely to stall in. A studio that's done this enough times can usually tell you in the first conversation: content, decisions, or scope creep, pick one. That answer is worth more than any generic week count, because it's the one thing that actually predicts your timeline instead of describing someone else's.