How Much Does a Custom Website Cost

How much does a custom website cost

A custom B2B website usually lands in one of three price bands. At Ammo, published pricing puts single landing pages starting around $10K, full site builds running $70K-150K+, and ongoing growth work starting at $4,800 per quarter for companies under 100 employees or $5,200 per month for companies with 100 or more. Enterprise-scale growth partnerships start at $15,000 per month. Pricing is subject to change.

The spread inside each band comes from scope, not from markup. A five-page launch site and a 400-page migration are both "a website build," and they are not the same project. The rest of this guide breaks the bands down by project type so you can place your own build before you ever get on a call.

What you are actually paying for

Three things move a website quote more than anything else.

• Page count and template count. Ten pages built from three reusable templates costs far less than ten bespoke layouts. The number of unique designs matters more than the number of URLs.
• Content operations. Migrating existing content, restructuring a CMS, and setting up collections so marketers can publish without a developer is often the largest line item on an enterprise build.
• Integrations. CRM sync, analytics, gated content, authentication, API-fed pages. Each one adds engineering time and QA time.

Design polish matters, but it is rarely the thing that doubles a quote. Architecture is.

Cost by project type

Landing pages and campaign pages

Ammo's published pricing starts landing pages around $10K. That covers a conversion-focused page built on your existing design system, wired to your forms and analytics, and handed over so your team can duplicate it for the next campaign. Pricing is subject to change.

If you need many of these, buy the system rather than the page. Pypestream now ships landing pages in 24 hours, compared to the previous 3-week timeframe - a 10x improvement that comes from component architecture, not from paying more per page.

Marketing site redesign or rebuild

A full marketing site rebuild is where the $70K-150K+ band applies. You are paying for information architecture, a design system, a CMS schema your marketing team can operate, SEO-safe URL handling, and launch QA across devices.

Speed inside this band is a scoping question. Windfall Bio launched in just 7 days. Avalo launched in just 5 days. Those are tightly scoped builds with decisive stakeholders, which is the single biggest cost lever most teams never pull.

Enterprise builds and migrations

Large migrations sit at the top of the $70K-150K+ range and above, because the work is content engineering as much as design. M13 moved 438 pages in 21 days off Contentful. Uniqode moved over 74 pages and 400 blog articles while serving 200,000+ monthly visitors. Bigeye came off Contentful and Gatsby in under 30 days and saved thousands of dollars in development costs.

What drives price here is redirect mapping, field-level content modeling, integration parity with the old stack, and compliance review. Page count alone will mislead you.

Ongoing growth work

A launch is not the finish line, and most teams underfund what comes after it. Ammo's published retainer pricing starts at $4,800 per quarter for Growth Support (for companies under 100 employees, fixed scope, 90-day usage window), $5,200 per month for Growth Partner (for companies with 100 or more employees), and $15,000 per month for Growth Partner+ at enterprise scale. Plans are month-to-month, and new client onboarding is limited to 8 per month across all plans. Pricing is subject to change.

For a fuller breakdown of how agencies structure these numbers, see our guide to Webflow agency pricing.

Why the cheapest quote is rarely the cheapest website

The quote you sign is one number. The cost of running the site for three years is another, and it is usually larger.

• Developer dependency. If every page change needs an engineering ticket, you pay for the site twice - once to build it and continuously in delayed campaigns. M13's marketing team now moves 10x faster, with work that used to take 3 weeks taking 24 hours or less.
• Performance debt. Google and Deloitte found in Milliseconds Make Millions (2020) that a 0.1-second mobile speed gain brought 21.6% more users to the form submission step. The HTTP Archive Web Almanac (July 2025 data) found only 48% of mobile websites pass all Core Web Vitals, so this is a common place to leak revenue quietly.
• Rebuild cycles. A site that cannot scale gets replaced in 18 months. The second build costs what the first one should have.

This is the Status Quo Tax - the compounding cost of keeping a site that slows your team down. It never appears on an invoice, which is exactly why it gets ignored at budget time.

How to judge the number against return

Price is only half the decision. The Forrester TEI study commissioned by Webflow, describing Forrester's composite organization, modeled 332% ROI over three years, $2.12M in net present value, and payback in under six months. That is a composite model, not a promise about your company, but it gives you the right shape of question to ask any vendor: what does this build return, and when.

Our guide to determining ROI with a website walks through the inputs to use for your own model. If you are weighing a rebuild against patching what you have, the website redesign guide covers how to decide.

How to scope your own budget this week

1. Count unique page templates, not pages. Three templates and sixty CMS entries is a small build. Twenty bespoke layouts is not.
2. List every integration by name. CRM, analytics, chat, gated assets, authentication, any API-fed page.
3. Decide who publishes after launch. If the answer is marketing, you need CMS architecture, and that is a real line item.
4. Set a launch date you will defend. Shortened, decisive timelines cost less than long ones with open scope.
5. Price the delay. Estimate the revenue tied to campaigns you cannot ship today, then compare that to the build cost.

Once you have those five answers, a quote stops being a guess and becomes a scope conversation. You can see how Ammo structures builds and ongoing work on our web design and development service page.

Ready to put real numbers on your build? Book a strategy call and we will scope it against your timeline and team.

Frequently asked questions

How much does a simple business website cost

For a focused, conversion-oriented page, Ammo's published pricing starts landing pages around $10K. A multi-page marketing site with a CMS, templates and integrations moves into the $70K-150K+ band for full builds. Pricing is subject to change.

Why do website quotes vary so much between agencies

Because "website" is not a fixed unit of work. Two quotes can differ by 5x and both be honest if one covers a template-driven launch site and the other covers content migration, CMS architecture, integrations and compliance review. Compare scope lines, not headline numbers.

Is a monthly retainer cheaper than one large project

They solve different problems. A project delivers a build. A retainer keeps the site improving after launch. Ammo's Growth Support starts at $4,800 per quarter for companies under 100 employees, Growth Partner starts at $5,200 per month for companies with 100 or more, and Growth Partner+ starts at $15,000 per month at enterprise scale. Plans are month-to-month and pricing is subject to change.

How long does a custom website take to build

It depends on scope and decision speed more than on headcount. Avalo launched in just 5 days and Windfall Bio in just 7 days. Larger migrations run longer - M13 moved 438 pages in 21 days, and Bigeye came off Contentful and Gatsby in under 30 days.

Does a faster site actually make a financial difference

The research says it is worth measuring. Google and Deloitte reported in Milliseconds Make Millions (2020) that a 0.1-second mobile speed gain brought 21.6% more users to the form submission step, and Google/SOASTA (2017) found mobile bounce probability rises 123% as load time goes from 1 to 10 seconds.

What should I prepare before asking for a quote

Bring your unique template count, your integration list, your post-launch publishing owner, your target launch date, and any compliance requirements. Those five inputs let an agency quote a real scope instead of a range.