The operating system for interior projects.
Karta replaces the WhatsApp threads, email chains, spreadsheets and PDFs that interior studios run on. One workspace for studio owners, designers, project managers, clients and trades, from brief to handover.
Pick your role, see your dashboard.
Same project, five points of view. Studio owners, designers and project managers work on desktop. Clients and trades work from a phone or tablet.
Client requests and site updates surface first. Dependencies, blockers and follow ups sequenced before they cost a week.
- Schedule
- Dependencies
- Risk register
- Trade coordination
- Client requested darker groutnew · 12 min ago
- Electrical first fix completesite · 1 h ago
- Kitchen delivery, Thursdayconfirmed
- Plaster blocked by rewireblocked
From twelve tools to one shared truth.
Interior projects live in email, WhatsApp, PDFs and spreadsheets. Karta pulls that scatter into a single project everyone can trust, then keeps it in sync as work moves.
A strip out on day one. A handover twenty two weeks later. Between them, hundreds of small decisions. Karta keeps them in the light.
Built for the way interiors actually get built.
Six capabilities that remove the daily friction. No modules to configure, nothing to migrate.
One thread per project, per room, per decision. Clients, designers, PMs and trades in the same context.
Stage, budget, approvals and next action, visible to every role in real time.
Photos, approvals and revisions attach to the right room and person automatically.
Ask, approve and hand off in app. Weekly sync becomes a scroll, not a call.
Dependencies surface before they bite. Milestones move because the work does.
English, German, Polish, French, Spanish, Italian. One project, many teams.
One request, followed all the way to handover.
Karta is the single source of truth. Each step is written to the same project, visible to everyone who needs it and to nobody who does not.
- Step 01Client requestAsked in plain language
- Step 02DesignerDrawing or spec updated
- Step 03ApprovalSigned and timestamped
- Step 04Project managerSequenced into the plan
- Step 05TradesAssigned with the current drawing
- Step 06Site updatePhoto, note or voice message
- Step 07Client notifiedProgress visible instantly
- Step 08HandoverFull history, nothing lost
One chain, one record. Every step writes to the same project, so nobody has to ask what happened, when, or who decided it.
An approval, a task done, a new revision. Every change updates the other dashboards instantly. No re syncing, no chasing, no exports.
See every sample dashboard →Eight places to look, replaced by one workspace.
Nothing is lost in the move. Everything decided in Karta is signed, timestamped and traceable to a person.
Eight surfaces, no shared truth. Approvals live in inboxes.
Communication, drawings, approvals, documentation, tasks and progress in one place.
- Official approvals
- Timestamped decisions
- Complete audit trail
- Transparency
- Security
- Accountability
Trades keep WhatsApp. Karta keeps the record.
Subcontractors will not adopt a new tool mid project. They message the site group as always. Karta files every update, photo and question into the right project, task and drawing, then answers come back the same way.
Marked complete, timestamped.
- Project
- Altbau Apartment
- Filed to
- Task · Fit kitchen carcasses
- Notifies
- PM and Designer
The trade never installs anything and never learns a new tool. Karta keeps the record, the timestamp and the audit trail on the studio side.
Sixty seconds, from brief to handover.
Calm has a measurable shape.
Observed across the first pilot studios in Berlin.
Real projects, quietly delivered.
“We always knew where the project stood. No more chasing.”
“Karta turned coordination from a weekly meeting into a system that runs itself.”
Answers, before you ask.
Do we have to migrate our current tools?
No. Start with one live project in Karta and keep everything else running. Studios usually retire their spreadsheets within the first two projects.
How long does onboarding take?
About ten days. We set up your studio, import your first project and train the team on a real site, not a slide deck.
Who is Karta for?
Interior design studios, general contractors and project managers running renovations, fit outs and residential builds between 50k and 5M euro.
Where is data stored?
In the European Union. GDPR by default. Double opt in for anything marketing.
Does it work on site, on a phone?
Yes. Trades get one task, one action and the current drawing. Photos and updates sync back to every dashboard.
What does it cost?
Karta is free during the pilot phase. Pricing is announced with paid access, and it will always be per studio, not per seat.
A studio for people who build interiors.
Karta is built by designers, project managers and engineers who have delivered interior projects across Europe. We ship weekly with three pilot studios in Berlin and nothing lands because a roadmap said so.
- Founded
- 2026
- Home
- Berlin
- Pilot studios
- 3
- Languages
- 6
Field notes, quietly shared.
The disorder precedes the build. Fragmented information, not personality, produces the feeling of losing control.
Read →
Disorganisation is expensive. Rework, idle time and undocumented approvals absorb far more budget than most homeowners realise.
Read →
One workspace where every participant finds the current version of everything that matters. Not a summary. The thing itself.
Read →Join the studios shaping Karta.
We open onboarding in waves. Owners, studios and trades get the call when their role is up next. Onboarding takes about ten days.
Closed pilot · Berlin first · Founding studios keep the price.
Book a callOr write to hi@kartaspace.com →