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PDA Architecture

Architecture practice websiteWeb2026

Twenty years of architecture,
legible in one minute

A Paris practice that gives existing buildings a second life was losing work it never saw: contractors are now chosen in London, Munich and Dubai by people who do not read French and cannot tell, between two meetings on a phone, whether this studio can handle a forty-million-euro building. I rebuilt its site as one English page where scale, proof and the practice's strongest argument are readable before the first scroll ends.

Role
Product designer, end to end
Status
Self-initiated concept, not affiliated with the practice
Delivered
Brief audit, three directions, design system, build and deploy
Method
Reference measurement, directions built as working pages
Tools
HTML, CSS, GSAP, Netlify
The redesigned PDA Architecture home page: the PDA wordmark across the full width, the claim 'Everything we build is already built', and an aerial photograph of a Paris block.

The practice's strongest argument was one it barely showed: the same building, before and after.

3Directions, built

Not drawn. Three working pages on the practice's real photography and figures, so the comparison used real type and real motion.

8Projects of thirty-one

Each with area, year, client and certification on the card, and a full sheet that opens over the page.

418 KBFirst load

Twelve requests and one image; the other fifty-six photographs load lazily. The brief asked for speed despite heavy photography.

17:1Body-text contrast

17.07:1 on light surfaces and 15.9:1 on dark, measured rather than judged by eye.

Make a Paris studio
readable to strangers

The brief, read as a set of claims to test, with the open questions written down instead of guessed.

PDA has worked in Paris since 2002: twenty-odd architects and engineers, clients such as Swiss Life, PIMCO and Gecina, buildings from 200 to 30 000 m². Their subject is narrow and unusual. They almost never build on empty ground. They take buildings that already stand and give them a next life.

The people who hire them increasingly decide from abroad. They are fund and asset managers with an ageing office portfolio, and they open the site between two meetings, usually on a phone, looking for one answer: can these people handle our building.

So the job was not to make an archive prettier. It was to make a cold reader trust a studio they have never heard of, inside one minute.

Where the old site fell short

  • Scale is invisibleAreas, client names and figures sat inside individual project pages. Nothing on the home page said how large the practice is.
  • The project list carries no dataNo area, no year, no building type. You had to open every project to find out what it was.
  • The strongest asset goes untoldTransformation of existing buildings is the entire practice, and before and after is the most convincing thing it owns. It was barely shown.
  • It is built for people who already know themFrench, many pages, an archive. As a first impression for an international reader it does not work.

Three directions,
built not drawn

Four screens each, as working pages, on the practice's real photography. A direction that only works in a static frame loses the argument immediately.

Direction one, Ledger: warm paper and an editorial layout.
LedgerWarm paper, editorial density, a date line carrying 1901 to 2025 through the page.
Direction two, The cut: a dark page with a before and after wipe across an aerial photograph.
The cutDark and cinematic, with a wipe between before and after dragged by cursor and scroll.
Direction three, Elevation: a white sheet with a drawn twelve-column grid.
Elevation — the one I keptA white sheet with a drawn twelve-column grid. The page reads like a building elevation.

The practice is led by an architect who is also an environmental engineer. A visible grid says that without a line of copy, and it gives the photography a structure to sit in instead of a background to float on.

The brief asked
for a site that moves

A modern, animated site was part of the task. For a practice that works on buildings that already stand, motion had to earn its place, so each of three effects carries one idea. They run live below, they are not screenshots.

The word shows what it says

“Already” is set so large that it can hold a photograph: through the letters you see the practice’s own construction site. The picture drifts as you scroll, so the word is never the same twice.

already

Projects move sideways

Eight of thirty-one projects sit in one row that travels sideways while you scroll down. The other twenty-three stay in the archive, one click away.

Virtuose
Virtuose
Volney
Volney
Belvista
Belvista
Saussure
Saussure
Vendôme
Vendôme
Rotonde
Rotonde

A project opens as a sheet

Click a project and the building opens as its own sheet, so the reader never leaves the page. Here it is 125 Saussure: a before-and-after pair, the story, and a technical card with client, contractor and address.

The 125 Saussure project sheet: before and after photographs, the story and a technical card.

The same practice,
a different first minute

The practice has since launched a new site of its own, so the original now exists only in the web archive. Here is that original next to my redesign. Keep scrolling and the earlier one gives way.

The redesigned PDA Architecture home page.
The original pda.archi home page: a full-screen aerial photograph with a French caption and the menu laid over it.

Before pda.archi, home page, as archived in April 2026. After

BeforeThe page opened on a full-screen slider with one French line over it. Nothing said what the practice does, how big it is or who it works for, and the logo and menu sat directly on the photograph, where the light parts of the picture swallowed them.

AfterThe page opens with the practice's one subject in a sentence, the year, the place and what it does, then the largest photograph. The same image is still there. It now lands on a reader who knows what they are looking at.

A project page

The original Virtuose project page: a full-screen interior photograph with the title and a French subtitle laid over it.

A project, beforeA photograph and one French line. A foreign client learns nothing about the building: where it is, how big, who it was for or what was done.

The redesigned Virtuose project sheet: a gallery, the story of the building and a technical card with client, address and floor area.

A project, afterThe same building gets a proper sheet of its own: gallery, the story, and a technical card with client, address, area, dates and certifications.

1page, from a many-page archive, with the rest of the archive one click away
ENEnglish, for readers who open the site in London, Munich or Dubai
8projects, each with area, year, client and certification on its card
0raw colour or size values outside the token file, enforced by a linter that blocks the build

One argument,
five steps

The page is ordered the way the case is made to a sceptic. Scroll to walk it.

  1. 01ClaimScale, the claim and one action before the fold. Whoever leaves after ten seconds has still learned what the practice does.
  2. 02ProofThe same corner of 125 Saussure photographed before and after a heavy rehabilitation. The practice's argument in one image.
  3. 03RangeEight projects of thirty-one, with area, client and certification on every card. The row moves sideways under the scroll.
  4. 04DepthTen disciplines under one roof, from reconstruction to the Digital Lab, without a page for each.
  5. 05DetailA project opens over the page with its gallery, story and technical card. The reader never has to leave.
pda-architecture-preview.netlify.app
Home page with the PDA wordmark, the claim and a full-width photograph
pda-architecture-preview.netlify.app/#transformation
Before and after of 125 Saussure, split across one image
pda-architecture-preview.netlify.app/#projects
The row of projects with area, year and certification on each card
pda-architecture-preview.netlify.app/#expertise
Expertise: everything an existing building asks for, under one roof
pda-architecture-preview.netlify.app/#p-virtuose
A project sheet opened over the page

Three calls,
and what each cost

Each of these made some other part of the page harder. Choosing which part is the design decision.

01

The grid is drawn, not implied

Column lines are painted on the container at exactly one column's pitch, and every block that carries lines sits on the real grid, so each cell starts on a line. For a practice whose whole argument is structure, the page itself has to show some.

What it cost — it broke twice before it was right: once because cells drew their own borders over the lines, once because a figure row used its own layout without a gutter. Both are now rules in the system.

02

A real before and after, not the impressive one

The first matched pair I had was an aerial rendering of an unbuilt research tower. It looked synthetic, and it was going to be the first argument on the page. I found a true pair instead: one corner of 125 Saussure, a built project for a real client, before and after.

What it cost — the two photographs were shot from slightly different distances, so they are aligned by crop until the cornice runs across the seam. It is a quieter image than the rendering, and it is honest.

03

Horizontal rows, pinned, with a price

Projects, expertise and team each scroll sideways under the vertical scroll, and each is pinned until its last card is fully on screen. Without the pin the first card leaves before anyone has looked at it and the last arrives as the section exits.

What it cost — the page grew from about 16 000 to 24 000 px, three quarters of it the travel of the rows. The team row goes first if the page needs to be shorter.

Not a shrunken
desktop

The audience opens the site on a phone between meetings, so mobile was designed next to the desktop, not cut down from it.

The original site on a phone: the logo laid over a photograph, no visible menu.
BeforeThe wordmark sits on the photograph and the light parts of the picture swallow it. There is no menu, and no way to reach a project, a team page or a contact from the first screen.
The redesigned home page on a phone: wordmark, a Menu button, the claim and a call to action above the photograph.
AfterMenu, the one action and the claim come first; the photograph follows. Everything above it is readable without a single scroll.
One menu, two behavioursSame links on both screens

The link set is written once. On desktop it stands in a row; on a narrow screen it folds under a button, so a text edit never has to be made twice.

Pin or fingerDecided by the screen, live

On a wide screen the rows are pinned and driven by scroll. Below 768 px the pins are released and the rows hand over to the thumb, and resizing the window switches between the two without a reload.

Nothing hides behind hoverNames are links, not reveals

Rows that opened on hover for two words never opened on a phone. They were removed, and project names now stand in the row as links to their own sheets.

See the whole thing
running

Visit the live site

An unsolicited concept redesign, not affiliated with PDA Architecture. Photography and project data belong to the practice and the named photographers. Opens in a new tab.

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