Aggregat

Basel / 47.56 N, 7.59 E

Page 03

Studio

Fourteen people in one room on Klybeckstrasse. No second office, no satellite, no plans for either.

01Studio noteWritten 2011, unedited

We would rather repeat a good detail than invent a bad one.

The practice was set up in 2011 to build in Switzerland at ordinary budgets, which is harder than it sounds and less photogenic than it should be. Our first commission was a kiosk. Our largest so far is thirty-two dwellings on contaminated ground.

We do not have a house style, we have a house method. Survey the site until something in it refuses to move. Design against that thing. Detail so that the building can be taken apart by whoever is left.

Every project is drawn by the two partners at 1:20 before anyone touches a model. It slows the first six weeks and saves the last six months.

Hands drawing on a plan sheet at a desk with a scale rule
Drawing room, Klybeckstrasse. Everything starts at 1:20.
Workers in high-visibility jackets standing on a poured slab beside a field of reinforcement bars
Site, Halde 07. One partner attends every pour.
02People14

Nils Aebersold

Partner, since 2011 / Construction, procurement

Trained as a mason before studying at ETH Zurich. Ten years at a contractor's technical office, which is where the practice learned what a drawing costs to build.

Rea Frangoulis

Partner, since 2011 / Design, competitions

Studied at the AA and in Athens. Runs every competition entry and teaches one day a week at FHNW. Wrote the studio note above and refuses to update it.

Twelve others

Architects, technicians, one model maker

Named in every publication credit and on every set of drawings. We do not keep a staff page because people leave and the buildings do not.

Selected recognition

2026Auszeichnung Guter Bauten, Basel-Stadt
2025DAM Preis, nomination
2024Prix Lignum, Ticino, silver
2023Rotterdam Architectuurprijs, shortlist
2022Mies van der Rohe Award, nomination
2021Tectonica Prize, earth construction

Teaching and writing

2019—FHNW Muttenz, design studio
2023"One Cut", Silo 4 monograph, Park Books
2021"Earth at 22 Lifts", Werk, Bauen + Wohnen
03MethodFour rules, no exceptions
01

Survey first

Two weeks on site before a line is drawn. Measured, photographed, dug.

02

Use what is there

Demolition is a material store. Six projects reused their own.

03

One idea per building

If it takes two sentences to explain, it is two buildings.

04

Detail for removal

Bolted before glued. Nothing we build should need a demolition permit.

04ContactOpen for 2027

Send a site, a budget, and the deadline. In that order.

office@aggregat.ch

OfficeKlybeckstrasse 141, 4057 Basel, CH
Telephone+41 61 271 04 08
HoursMon to Thu, 08:30 to 18:00
EnquiriesAnswered within 14 days
Capacity3 to 4 commissions per year