Begin
"Tell us about the project. We listen before we draw."
Accepting commissions · 2026–27
Vilnius · Worldwide
Working since 2018
Working since 2018
We have been designing homes and quiet rooms since 2018. Our work begins with measurement: of the land, of the light, and of the way our clients move through their day. From that material we develop a single rule that holds the whole.
Read our philosophy
01
Cultural
CULTUBE
02
Residential
Casa Trigueros
03
Cultural
Campus Oriente
04
Cultural
Royal Danish Bazaar
05
Campus Oriente
Alternative development plan for Campus Oriente, Pontifical Catholic University of Chile: heritage conservation, parametric design and BIM.
Case study →
03 · What we do
Four services, one studio.
Every project led personally by Joris, with a small ring of trusted engineers, makers and a model-builder.
01
Architectural
design
Private houses, pavilions and small cultural buildings, from feasibility through to detail design.
Read more →
03
Renovation
& adaptation
Sensitive interventions in historic fabric, with conservators and craftspeople.
Read more →04
Computational
research
Custom parametric tools, material studies and digital fabrication research.
Read more →
04 · Process
A four-phase method, plotted across a year.
Phase 01 · Discovery
Listen
& survey
Site visits, conversations, measurements. The brief is captured as a precise set of constraints.
2–4 weeksPhase 02 · Design
Parametric
Design
A computational model is built: not the design itself, but the rule that generates many designs.
4–8 weeksPhase 03 · Detail
Material
& detail
Drawings, mock-ups at 1:1, material selection, and permits. Where choices become tangible.
3–4 monthsPhase 04 · Build
Build
& hand over
Weekly site supervision. We ensure the parametric logic survives the site, and hand over a documented building.
6–14 months
05 · Approach
Building a passive
Building a passive
house, that lasts.
Passive House is the world's most rigorous energy-efficiency standard. A house built to it is warmer, quieter, healthier, and uses a fraction of the energy to heat and cool.
It's not a feature we sell. It's how we build, on every project.
Standard · Passivhaus
87%
Average energy reduction vs. baseline
06 · Studio
A small practice, made by hand,
A small practice, made by hand,
and a kettle.
Studio Joris is led by Joris Katkevicius, who founded the practice in 2018 after training in computational design at ETH Zürich and traditional masonry on the Iberian coast.
Every project is led by Joris, from first sketch to last detail.
Studio · Joris V.
08
Years of practice, residentially focused
07 · Words
What our clients
have said.
2022–2025
They listened for months before they drew. The house surprised us, then felt inevitable, as if it had always been waiting in the dunes.
I
Inês & Tomás A.
Casa Várzea · 2025
Joris turned a brief about acoustics into a building that sings on the eye before a single note is played. Calm, rigorous, quietly precise.
G
G. Petrauskas
Pavilhão Lyra · 2024
The light in my studio is now a collaborator. Every hour brings a different room. I have never worked anywhere this honest.
M
M. Andrade
Atelier Neris · 2022