About us
A family developer from Kraków.
We came from a simple conviction: someone buying a flat deserves a developer who talks about dates and prices plainly — not one who hides them behind adjectives.
Origin
Why we exist.
We founded Osnowa in 2010 because we saw the same pattern over and over: a buyer signs a contract they do not fully understand, lured by a brochure full of "prestige" and "refined details" — and the handover date turns out to be a promise, not a commitment.
We decided to do one thing well. Compact developments in Kraków’s established districts, handed over on time. No towers, no fields outside the city — narrow, so we can do it well.
How we work
Three pillars.
On time, not on promises
Nine of nine developments handed over on time. The construction schedule is part of the contract, not the marketing — and you see every milestone.
Transparent prices
We publish the price of every unit and its full price history. No "ask for a price" — you know what a flat costs, and why, before you even contact us.
An open construction journal
Every week we show progress from the site: photos, dates, facts. You buy on what you can see, not on what a brochure promises.
- Year founded
- 2010
- Developments on time
- 9 / 9
- Units per development
- 20–70
Team
The people behind Osnowa.

Andrzej Sarna
Management
Delivery & construction
PL · EN

Marta Sarna-Kulig
Management
Sales, brand & digital
PL · EN

Tomasz Lewicki
Advisor
Design & architecture
PL · EN · DE

Katarzyna Wójcik
Specialist
Sales office
PL · EN

Paweł Nowak
Specialist
Site management
PL · EN

Magdalena Kowalczyk
Assistant
Customer service
PL · EN
First step