Start designing
No install and no account needed to look around: open the designer and a house builds itself in front of you. The free plan saves one design and shares view links.
Open the designerContact & legal
Talk to us.
Sales, support, or partnerships — every conversation starts in the same place. The platform is designed and operated by Castomo prosta spółka akcyjna, Wrocław, Polska. The fastest answer to most questions is already on this site: the docs, the pricing page, or the designer itself.
Sales & partnerships
Plans for studios, developers, interior and garden designers — plus partnerships and volume onboarding for housing estates. Tell us the estate, we'll bring the catalogue.
Plans & enterpriseSupport & documentation
The *.webhome.json format, the keyboard map, the URL parameters and the QA gates are all documented. Most "how do I…" questions end there.
Read the docsPlatform owner
Company data.
| Company | Castomo prosta spółka akcyjna |
| Registered office | ul. Powstańców Śląskich 5/212, 53-332 Wrocław, Polska |
| KRS | 0001188843 |
| Court register | Sąd Rejonowy dla Wrocławia-Fabrycznej we Wrocławiu, VI Wydział Gospodarczy Krajowego Rejestru Sądowego |
| NIP | 8993033031 |
| REGON | 542471636 |
| Share capital | 100 000,00 zł |
| hello@castomo.com |
The same registry data is printed in the footer of every page on this site. How personal data is handled: privacy notice.
Or just start designing.
The best message we can receive is a house on your plot — open the designer and play the sun across it.