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How do you build and develop a custom growth-driven design website?

✓ Verified Last reviewed by Lean Labs Next review due Dec 14, 2026

Every claim is sourced below

You build a custom growth-driven design website by deciding what the site has to do for your buyers and your business, launching a smaller site that does the most important of those things, and continuing to develop it from what real visitors do. "Custom" here means the strategy, messaging, design and build choices are made for your buyers and your goals. It doesn't mean every page is finished before launch.

Start by deciding what the site is for

Strategy comes first because the launch won't include everything. When the wishlist is longer than the team can build well in one pass, something has to decide what goes first. In growth-driven design that's research about your buyers, combined with a goal that has a number on it.

Lean Labs' growth-driven design program opens with a strategy stage of 10 to 14 days. The work in it is research: who the buyers are, what they come to the site to do, how they move toward a purchase, and which numbers will count as success. That's one provider's schedule for its own program, and yours depends on how much research you need to do.

What you want out of this stage is a ranked list. Each item is something the site could do, tied to a buyer need and to the goal. The top of the list becomes the core of the first build, and the rest waits in order. The first build also has to work as a whole site, so it carries what those top items depend on, such as navigation, forms and the pages they link to.

The ranking is a large part of what makes the site custom, because it comes from your buyers and your goals. The design and build choices that follow are made to serve it. There's more on this stage in how to create a growth-driven design strategy and in how jobs to be done and user research shape it.

Build a launchpad from the top of the list

The launchpad is the first version of the site. It has to improve on the site you have now, launch quickly, and be easy to change afterward. Lean Labs schedules 60 to 90 days for its launchpad stage and aims it at the few features expected to produce most of the impact. Read that as a prompt to rank hard and build the top of the list first.

Suppose a B2B software company finishes strategy with forty items on its list. The research says buyers arrive wanting to see pricing and to know whether the product fits their industry. The launchpad might then be a homepage, a pricing page, two industry pages and the demo request flow. The older content moves over with a light cleanup. The resource library redesign and the ROI calculator stay on the list for later sprints.

Two build decisions affect how the site develops afterward. The first is to assemble pages from shared sections where the platform supports it. WordPress's Site Editor documentation, for example, notes that a change to a header or footer template applies to every page that uses it, so one edit updates all of them. There's more on that choice in modular web design versus custom development.

The second is to set up measurement before launch. Analytics, form tracking and the connection to your CRM start recording when they're switched on. Tracking switched on after launch misses the earlier visits it was meant to record.

The platform matters for a related reason. A sprint depends on changing a page, so who can publish matters as much as what the platform can do, which is the question behind whether HubSpot is the best platform for growth-driven design.

Keep developing the site in sprints after launch

Once the launchpad is live, development continues in a repeating cycle. In the method's description of continuous improvement, each sprint is planned around one focus metric, and the ideas most likely to move it go into a time-boxed build. The team then learns from the experiments and the data, and shares the lessons with marketing, sales and service.

Lean Labs' program shows how one team fills in that cycle. A sprint opens with a look at where buyers get stuck, drawing on page analytics, form results, CRM records and what sales is hearing. The fixes are then ranked by their likely effect on pipeline, by how confident the team is in them, and by the effort they take.

Not every change needs a split test. A broken form gets fixed. A test is for the case where two reasonable versions compete and you want to compare them on live traffic.

HubSpot's page A/B test, available on Content Hub Professional and Enterprise, shows two versions of a page at one URL to half the visitors each. HubSpot recommends changing one variable at a time, which makes a difference between the versions easier to interpret.

A test doesn't always finish inside a sprint. How long it takes depends on the page's traffic, on how far apart the two versions perform, and on how the test is set up. So a test can keep running into a later sprint while other work continues.

Analytics show where visitors leave a page and don't show why. Investigate the reason before you choose the change, with interviews, usability sessions or what the sales team is hearing. We go further into this in turning user insights into hypotheses and experiments.

Stage What it produces Lean Labs' advertised timing
Strategy Buyer research, goals and a ranked list of what the site should do 10 to 14 days
Launchpad A live site covering the top of that list, with measurement in place 60 to 90 days
Continuous improvement Tested changes, and lessons that reorder the list 30-day sprints, ongoing

What the timings and the agreement cover

Those timings are what one agency advertises for its own stages. The method calls for a time-boxed sprint, and thirty days is Lean Labs' choice. Choose a length that gives your team a workable rhythm for planning, building and reviewing. A test can run across more than one sprint, so the length doesn't have to fit every test. The launchpad's schedule moves with how many pages it covers.

The ongoing stage can also be a separate agreement from the build. Lean Labs' growth-driven design program, for example, runs on an agreement that renews each quarter. Its Design Blueprint is a different engagement, a four-week sprint that sets visual direction before a build starts.

The distinction matters when you compare quotes. A price for strategy and a launchpad covers the first two stages. Development continues in the third, so know before you sign whether it's included, who will run it, and for how long. What a growth-driven design contract and retainer should include covers those terms.

Through all three stages, the ranked list from strategy stays the working document. Each sprint's lessons move items up or down. Keep it where the whole team can see it, and note beside each item the evidence that moved it.

Sources

Growth-Driven Design: How it Works

Growth-Driven Design

Primary source Verified Sep 14, 2026 Supports: Names the three stages and their published durations (strategy 10-14 days, launch pad 60-90 days, continuous improvement in 14-day sprints), lists the research components of the strategy stage, and carries the 2017 State of GDD survey figures: 60 days versus 108 days development time, 14.34% more le

“Agencies that used GDD on HubSpot Websites (vs. Wordpress) reported seeing 14.34% more leads after 6 months. Based on the 2017 state of GDD survey responses.”

Growth Driven Design: Website Strategy

GrowthDrivenDesign.com

Primary source Verified Sep 14, 2026 Supports: States the purpose of the strategy stage: set clear objectives to avoid endless revisions, understand the customer's needs and pain points, and turn an organized wishlist of ideas into an actionable implementation plan before tactics begin.

“Putting strategy before tactics enables you to take an organized wishlist of ideas and turn them into an actionable implementation plan.”

Launch Pad Website

GrowthDrivenDesign.com

Primary source Verified Sep 14, 2026 Supports: Defines the launch pad as a 60-90 day, 2-3 month build that looks and performs better than the current site but is not the final product; names the build steps (page plans, rapid prototypes, design sprint, finish sprint with heatmap and screen recording at launch); focuses sprints on the 3-5 highest

“The goal of the Launch Pad website is to quickly build a website that looks and performs better than what you have today, but is not your final product.”

Continuous Improvement

GrowthDrivenDesign.com

Primary source Verified Sep 14, 2026 Supports: Defines the four-step sprint cycle (plan, build, learn, transfer), states that every plan starts with a focus metric and that the highest-impact ideas are prioritized into a time-boxed sprint, and describes transfer as sharing learnings with marketing, sales and service.

“Every plan starts with a focus metric that you want to improve. The highest impact ideas to achieve the focus metric goal are prioritized into a time-boxed build sprint.”

Growth-Driven Design for Websites

IMPACT

Supporting Verified Sep 14, 2026 Supports: Agency guide that breaks the strategy stage into goals, quantitative audit, qualitative user research, written fundamental assumptions, global and page-level strategy, and a wishlist brainstorm of 50 to 150 or more ideas; describes the 80/20 wishlist analysis plus the must-have and launch-necessity

“Your brainstorm should last a few hours, and you should come away with 50 to 150 (or more) new ideas for your website.”

What is growth-driven design?

IMPACT

Supporting Verified Sep 14, 2026 Supports: Describes IMPACT's own engagement model: a five-week website strategy blueprint phase, a launchpad phase focused on the homepage and other key pages, and an iterative phase lasting around five months after launch run in monthly sprint cycles, with the cycle listed as four steps including transfer. U

“Over an intensive five-week period, we work with your team to develop a website strategy blueprint.”

What Is a Launchpad Website in Growth-Driven Design?

Struto

Supporting Verified Sep 14, 2026 Supports: Describes the launchpad as a fully functional, secure site built with core features only, selected by applying the 80/20 rule to the wishlist with the remaining 80 percent held in a backlog until live user data validates it. Also the source of the vendor program figures quoted and qualified on this

“You select the 20% of wishlist items that will generate 80% of the immediate business impact... The remaining 80% of items are pushed to a development backlog.”

How Not To Run an A/B Test

Evan Miller

Independent Verified Sep 14, 2026 Supports: Establishes the repeated significance testing error: reported significance levels assume the sample size was fixed in advance, so stopping a test as soon as a dashboard shows significance makes the reported level meaningless. Supports the statement that a change on a low-traffic page is a decision r

“If instead of deciding ahead of time, 'this experiment will collect exactly 1,000 observations,' you say, 'we'll run it until we see a significant difference,' all the reported significance levels become meaningless.”

Putting A/B Testing in Its Place

Nielsen Norman Group

Independent Verified Sep 14, 2026 Supports: Establishes that A/B testing measures which version performs better under real conditions but does not explain why, and that it should be combined with qualitative methods rather than used alone. Supports the limit placed on the learn step of the improvement cycle. NN/g is a UX research firm with no

“Measuring the live impact of design changes on key business metrics is valuable, but often creates a focus on short-term improvements. This near-term view neglects bigger issues that only qualitative studies can find.”

The three stages of growth-driven design: strategy, launchpad, and continuous improvement

Lean Labs

Contributor · COI Verified Sep 14, 2026 Supports: The contributor's own published account of how it scopes this work: a three-to-eight-page launch pad running roughly 12 weeks as four-week messaging, design and development sprints, a full engagement of 9 to 13 weeks at $30,000 to $70,000 or more, the stated 80/20 view of messaging versus custom des

“If your site gets fewer than 1,000 visits per month, A/B tests won't reach statistical significance in a reasonable timeframe, and the improvement cycle stalls.”

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