Geoprostor Ltd. · since 2016
Geodesy and geoinformatics
From cadastral surveys and stake-outs to aerial imaging, 3D terrain models and volume calculations — reliable surveying solutions for private and commercial clients.
Ozalj · Karlovac · Vojnić — +385 98 17 37 205
New law 2026
Building legalization is open again
The new law is in force: legalization applications are accepted with no deadline, fully digitally. The condition is that the building existed by 21 June 2011 — we check free of charge whether your building qualifies.
Services
We cover the full range of surveying work — in the field, on the construction site and in spatial databases.
Building legalization
Legalising houses and extensions built by 21 June 2011 — under the new law, with no application deadline.
Learn moreCadastral surveys and registration
Parcel subdivision surveys, building registration, condominium division and special geodetic base maps for design.
Learn moreStake-outs and as-built surveys
Staking out of buildings and boundaries, surveys of existing terrain and structures with stake-out reports.
Learn moreAerial imaging and 3D models
Photogrammetric drone imaging, orthophoto maps and detailed 3D models of terrain and structures.
Learn moreVolume calculations and earthworks
Precise volume calculations, monitoring of excavations, embankments and stockpiles, and earthworks quantity surveys.
Learn moreUtility infrastructure cadastre
Surveying of utility lines and preparation of reports for registration in the utility infrastructure cadastre.
Learn moreEngineering surveying and GIS
Construction monitoring and control measurements, along with GIS services and spatial databases.
Learn moreLand registry and cadastre
Registering houses and buildings and aligning the cadastre with the land registry — so the records match reality.
Learn moreHow we work
Send an inquiry
Call us or fill in the form with the basics — the parcel number and cadastral municipality are enough; we check the rest.
Free quote
We review the official records and send a quote with a fixed price and timeline — no hidden costs.
Fieldwork and follow-through
We schedule the survey, prepare the report and run the procedure through to registration in the cadastre and land registry.
About us
Geoprostor Ltd. was founded in 2016 in Ozalj, Croatia. The company is led by Slaven Sekulić and Sebastijan Sekulić, and our team of surveying professionals works on projects across Karlovac County and beyond.
We combine classic field surveying with modern technology — photogrammetric aerial imaging, 3D modelling and GIS tools — to deliver every project accurately, on time and in line with regulations.
Licences and expertise
- Licensed by the State Geodetic Administration for professional geodetic work
- Two chartered geodetic engineers listed in the HKOIG registry
- A trainee candidate engineer and a professional associate on staff
- A PhD in GIScience (University of St Andrews) and peer-reviewed research in spatial analytics
- Professional liability insurance in place
Team
Slaven Sekulić
co-founder and director
Sebastijan Sekulić, PhD
co-founder and director · chartered geodetic engineer
PhD in GIScience (University of St Andrews) · HKOIG reg. no. 1581
Gordanka Đurić
chartered geodetic engineer
Dipl.-Ing. Geod. · HKOIG reg. no. 371
Dino Mešanović
trainee — candidate engineer
MSc Geod. · reg. no. 1109
Srđan Peleš
professional associate
surveying technician · reg. no. 936
- founded
- 2016
- locations
- 3
- team members
- 6+
- years of experience
- 10
Locations
Headquarters
Ozalj
Kurilovac 10, 47280 Ozalj
Office
Karlovac
Bogoslava Šuleka 29, 47000 Karlovac
Branch office
Vojnić
Karlovačka ulica 4A, 47220 Vojnić
Office: Bogoslava Šuleka 29, Karlovac — larger map
Contact
Get in touch with a description of your parcel or project — we respond quickly and schedule field work at short notice.