Most founders choose a Shopify agency the way they would choose a photographer: they look at the work. They shortlist three or four studios whose portfolios resemble the brand they want to become, take a call with each, compare proposals and pick the one whose past sites feel closest to their own taste. The logic is reasonable. A portfolio is the only evidence available before money changes hands; it shows the standard of finish an agency can reach, the brands it attracts and whether its visual sensibility is anywhere near the founder's own.
A premium brand is not buying a commodity service, though. It is buying a sequence of decisions, made over weeks, about how the brand behaves in the one channel it fully controls. The portfolio shows the outcome of those decisions for other brands, under other briefs and other constraints, and says almost nothing about how the next set will be made. The better test of a Shopify agency is how it decides, who does the work, and how it treats the brand once the site is live. Those three things determine the result; the portfolio only illustrates it.
This is not an argument that portfolios are irrelevant. An agency with no premium work in its history is unlikely to produce a premium site on its first attempt, and taste is a fair filter at the shortlist stage. The argument concerns what happens after the shortlist, when every remaining agency has a handsome portfolio and the founder still has to choose. At Design & Build Co., we see founders wrestle with exactly this choice in many first conversations, often after an earlier agency relationship has gone wrong.
This article examines why the portfolio is the weakest evidence in choosing a Shopify agency, why design and build belong in one process, the questions that reveal how an agency thinks, where agency relationships tend to fail, and what fixed scope and day rates signal about the relationship on offer. It closes with five principles for choosing an agency for a premium brand.
Why the Portfolio Is the Weakest Evidence
A portfolio is curated after the fact. Every agency shows its best work, photographed in its best light, with the compromises removed from the story. The site that launched four months late, the navigation rewritten a week before go-live: none of these appear on the case study page. What the founder sees is a selection of outcomes chosen to win the next brief, and an outcome stripped of its circumstances is a weak basis for predicting the next one.
The deeper problem is attribution. A strong site is the product of a good brief, a decisive client, strong photography and a capable agency, in proportions the portfolio never reveals. Some of the most impressive work in any agency's history was carried by a client with an exceptional creative team and a finished identity; the agency executed well, but the hard decisions had already been made. The screen tells the founder which brands an agency has worked with, not what it contributed to each.
There is also a matching problem. Founders tend to shortlist agencies whose portfolios look like the brands they admire, which selects for resemblance rather than judgement. An agency that has built five sites in a particular minimal register will build a sixth in the same register, whether or not it suits the brand in front of it. The portfolio is a record of other people's decisions; the founder is hiring the agency to make theirs. That gap is where most poor selections begin, and it is invisible at the moment of choosing.
None of this makes the portfolio worthless. It is a fair test of finish and taste, and a fair filter for experience in the category. The mistake is treating it as the deciding evidence once the shortlist is made, when every remaining agency clears the bar and the real differences lie in process, people and the relationship after launch. Those differences are harder to see from the outside, which is why a founder needs to ask about them directly.
Design and Build as One Process
Many premium sites are made in two halves. One firm produces the visual direction and a set of page designs; another receives the files and builds them on Shopify. On paper the division is efficient, since each party does what it does best. In practice the handover is where intent leaks out. The designer specified a behaviour the theme cannot support without custom work; the developer substitutes the nearest available option; nobody with the authority to decide is present when the substitution is made, and the founder sees the result only at review.
Should design and development be done by the same agency?
Design and development should be done by the same agency wherever the site matters to the brand, because the decisions that shape a premium store are made in both disciplines at once. A layout is only as good as the theme's ability to deliver it, and a build is only as good as its understanding of why each element exists. When one firm designs and another builds, every gap in the files is resolved by someone who was not present when the intent was set. At DBCO, design and build are one process, so the reasoning travels with the work.
The alternative is a process in which the designer understands the platform and the build is planned while the design is still forming. On Shopify, that means designing with the theme's architecture in view: knowing which sections exist, which need extending, where a custom section earns its cost and where a configured one will do. A designer who knows that an interaction requires bespoke development can decide, with the founder, whether it is worth it. A designer who does not know produces files that quietly commit the budget to work nobody chose.
The same logic applies to quality assurance. A site built by the people who designed it is checked against the intent, not only against the files. The difference shows in the details: the way an image crops on a narrow phone, the behaviour of a size selector when a variant sells out. Those details are rarely specified in full; they are judged. Judgement survives a process with one owner and erodes across a handover, one reasonable-seeming substitution at a time.
For a premium brand the cost of that erosion is not cosmetic. Brand trust works as commercial bedrock because it is built from consistency between what the brand promises and what the customer experiences, and a storefront that drifts from its own design reads, to a careful customer, as a brand that does not quite mean what it says. A founder asking whether one agency should do both is really asking who will be accountable for the gap between the approved design and the finished site. The answer should be a single name.
"Judgement survives a process with one owner and erodes across a handover, one reasonable-seeming substitution at a time."
The Questions That Reveal How an Agency Thinks
The questions most founders ask in a pitch concern deliverables: how many pages, how many rounds of revisions, which apps, what timeline. They reveal very little, because they invite the agency to describe its process in the terms it has rehearsed. The questions that reveal how an agency thinks concern decisions: how it makes them, who makes them, and what it does when the founder's instinct and the evidence point in different directions.
What should I ask a Shopify agency before hiring them?
Before hiring a Shopify agency, a founder should ask questions that expose how the agency decides rather than what it delivers. Ask who will lead the work day to day and whether that person is in the pitch. Ask what the agency would remove from the brief and why. Ask how it chooses between a configured theme section and custom development. Ask what happens after launch, and who owns the theme and the code at handover. The answers matter less than how specific they are; a good agency answers with reasons, not reassurance.
The question about removal is the most revealing. An agency that has read the brief carefully will have a view on what it does not need: the second navigation level that serves a catalogue the brand does not yet have, the lookbook template that duplicates the collection page, the app that solves a problem the brand will not face for a year. An agency that only adds to the brief is either not thinking about the brand or thinking about the invoice. Restraint is the most reliable signal of judgement in this category, because the default in eCommerce is accumulation.
The question about who leads matters for a different reason. Senior people often run the pitch; the daily decisions are often made by people the founder has not met. That is not dishonest in itself, but the founder should know who will decide typography, image crops and product page hierarchy, and should meet that person before signing. A founder who discovers the lead designer at kick-off has hired an agency on the strength of someone else's thinking, and has little recourse once the work begins.
The question about theme versus custom development tests whether the agency understands the economics of the platform. A good answer explains that a strong premium theme, configured from a considered style guide, carries most of what a launch site needs, and that custom sections are justified where they express something specific to the brand. An agency that proposes custom development for everything, or for nothing, has a default rather than a method.
Finally, ask how the agency measures success after launch. For premium brands, the more useful measures concern customer quality rather than first-purchase conversion: the returning-customer rate, full-price sell-through, the composition of the cohort the site attracts. An agency that thinks in those terms will make different design decisions from one chasing a single number, and the difference compounds over the life of the site.
Where Agency Relationships Fail
Agency relationships in this category rarely fail at the moment of selection. They fail gradually, in the middle of the project, and the causes are consistent. The brief expands without the budget expanding; decisions that should take a day take a fortnight; content and photography arrive late and compress the build; the founder and the agency develop different pictures of what was agreed. Together they produce a site that launches late, over budget and slightly less considered than anyone intended.
The most common failure is decision drift. A founder approves a direction, then sees a competitor's site, then asks a friend, then reopens the direction. The agency, wanting to keep the client happy, accommodates. Each reopening is reasonable on its own; collectively they turn a short design phase into a long one and leave the site marked by several competing ideas. The agencies worth hiring manage this deliberately: they fix decisions in a style guide early, make the cost of reopening them visible, and say plainly when a change would weaken the work.
How involved should a founder be in a website build?
A founder should be closely involved in a website build at the points where the brand is defined and largely absent from the points where it is executed. That means being present for discovery, approving the style guide that sets typography, colour, imagery direction and tone, and signing off key pages against that system. It does not mean reviewing every spacing value or reopening agreed decisions late in the build. The founder's job is to make the brand decisions early and decisively; the agency's job is to carry them through without drift.
The second failure is the content gap. Agencies quote for design and build; the site cannot launch without product copy, photography, size guidance, delivery information and an about page that says something. Founders consistently underestimate this work, and agencies too often fail to say so early enough. The result is a finished theme waiting for content that does not exist. The fix is unglamorous: the agency defines the content it needs, in what form and by when, at the start, and treats late content as the scheduling risk it is.
The third failure happens after launch. Many agencies treat go-live as the end of the relationship; the founder discovers within weeks that small changes require a new quote, the agency's attention has moved to the next client, and the site begins to drift from its own system as the in-house team improvises around it. A premium site needs a steward. The question to ask before signing is not only what the agency will build, but what the relationship looks like three and six months after launch, and what the founder can change without it.
"Restraint is the most reliable signal of judgement in this category, because the default in eCommerce is accumulation."
Fixed Scope, Day Rates and What They Signal
Agencies price premium Shopify work in two broad ways. Some quote a fixed fee for a defined scope; others estimate a number of days at a day rate and bill against them. Both models are legitimate. What matters is what each signals about how the agency expects the project to run, whether that expectation matches the brand's situation, and who carries the risk when it does not.
For a brand with a clear brief, a finished identity and content in hand, fixed scope works well. The decisions are largely made, the remaining risk is execution, and a fixed fee rewards the agency for executing efficiently. For a brand still working out its positioning, a fixed fee can become a trap: the agency protects its margin by narrowing what it will reconsider, and the founder discovers that the questions most in need of answers sit outside the scope. Day-rate work suits discovery better, provided progress is reported honestly against the estimate.
Customised and bespoke Shopify builds for premium brands run from £40,000 to £100,000 and beyond, and the spread within that band reflects how many decisions are made bespoke rather than inherited from a proven system. We explain how that pricing is set in a companion piece. The useful test for any proposal is whether the founder can see where the money goes: which decisions are made specifically for the brand, which are inherited from the theme, and which sit outside the quote altogether.
A third model suits new brands particularly well: a fixed programme built on a fixed system. Scope is narrow by design, the design system underneath is already proven, and the work concentrates on the brand decisions a style guide captures. It trades breadth for speed and certainty. It is the right choice for a brand that needs a considered site to launch and learn from, and the wrong one for a brand whose proposition depends on functionality no theme provides. An honest agency tells a founder which of the two they are.
Whatever the model, the pricing conversation reveals character. An agency that discusses money plainly, explains what it would cut to meet a budget and says when a brief cannot be done well for the figure available is an agency that will hold the same line during the build. One that agrees to everything in the proposal will discover its constraints later, usually at the founder's expense and usually at the point in the project where changing course costs the most.
Five Principles for Choosing an Agency
How do I choose a Shopify agency for a luxury brand?
To choose a Shopify agency for a luxury brand, use the portfolio to build a shortlist and then judge the shortlist on how each agency decides. Meet the person who will lead the work. Ask what the agency would remove from the brief, how it balances theme configuration against custom development, and how it handles the relationship after launch. Prefer an agency where design and build are one process, so intent survives into the finished site. The right agency answers with specific reasons and is willing to say no.
First, use the portfolio to shortlist and stop using it there. Taste and finish are fair entry criteria; once three agencies clear them, further comparison of case studies tells the founder more about each agency's past clients than about its future decisions. The time is better spent on a second conversation with each about how they would approach this brand specifically and what they would question in the brief.
Second, meet the people who will do the work. The pitch team and the project team are often different, and the quality of a premium site is set by whoever makes the daily decisions about type, image and hierarchy. A founder should know that person's name, have seen their work and have spoken to them before signing. Chemistry matters here, because the founder will spend weeks making decisions with them about the brand's most visible expression.
Third, choose an agency where design and build sit in one process. The handover between disciplines is where intent leaks out of a premium site, and no specification is complete enough to prevent it. An agency that designs with the platform in view, and builds with the design reasoning in hand, produces a site that matches its own intent. That structure is the strongest predictor of whether the finished site will look like the one the founder approved.
Fourth, read restraint as a signal of judgement. The agency that removes things from the brief, recommends fewer apps and argues for a narrower first site is usually thinking harder about the brand than the one that agrees to everything. The same discipline runs through intelligent CRO as a brand quality discipline: every addition to a premium storefront must earn its place against the brand, not merely against a metric.
Fifth, agree what happens after launch before signing. The relationship does not end at go-live, and the months after launch decide whether the site keeps its standard or drifts toward the default. A founder should know who will make changes, how quickly, at what cost, and what the in-house team can safely do alone. An agency with a clear answer has thought about the brand's future; one without has thought only about the project.
At Design & Build Co. the decisions that shape a site and the build that delivers it sit in one process, from Brand Discovery to handover. Brand-led Shopify design and build for premium fashion, beauty and lifestyle brands, and the Launch Programme, from £16,000, which brings the same taste and judgement to new and growing brands through our proprietary design system, in two to four weeks. If you are choosing an agency in this category, email info@designandbuild.co for an intro call and a demo.
