Volkan Cagdas (Ph.D.)
Associate professor for cadastre and land administration

ORCID iD iconorcid.org/0000-0002-5200-0075

Yildiz Technical University
Department of Surveying Engineering
volkan@yildiz.edu.tr

Address

Yildiz Teknik Universitesi
Harita Muhendisligi Bolumu
Davutpasa Kampusu
34220 Esenler / Istanbul

P: +90 212 383 5313
F: +90 212 383 5274

Research 

Institutional aspect: Cadastral systems / land administration, real estate valuation and taxation, land re-adjustment, land consolidation, and expropriation.
Technological aspect: Spatial data infrastructure, geographic information standards, data modeling, knowledge organization systems, semantic web, and linked data.

ISO 19152:2012 LADM based Valuation Information Model

The ISO 19152:2012 Land Administration Domain Model (LADM) presents a conceptual schema for the specification of property units and their legal and geometric characteristics recorded at cadastre and land register, and relates these datasets with other property related datasets (e.g. addresses, utility networks, building (units), valuation, taxation, land use, land cover) recorded at external registrations. A recently initiated colloborative research aims at developing a LADM based international information model for one of these external registrations, namely a Valuation Module for the ISO 19152:2012 LADM. The purpose of this research is to define the semantics of valuation information maintained by public authorities especially for recurrent taxes on immovable property, and to extend the scope of LADM from a fiscal perspective to provide an information model that could be used to construct information systems for immovable property valuation. The preliminary results of this research were presented by Cagdas et al. (2016) at the 11th 3D Geoinfo Conference. This research is carried out within a Joint Working Group which is now being established under FIG Commission 7 (Cadastre and Land Management) and FIG Commission 9 (Valuation and the Management of Real Estate).

A questionnarie is prepared as a part of the methodology, for more information see isoladm.org/ValuationQuestionnaire.

The topic is also on the agenda of LADM 2017 Workshop, Delft, the Netherlands, 16-17 March 2017.

Cadastre and Land Administration Thesaurus  CaLAThe

The Cadastre and Land Administration Thesaurus, shortly CaLAThe  is a Knowledge Organization System for the domain of cadastre and land administrationIt provides a controlled vocabulary, which is initially derived mainly from the ISO 19152:2012 Land Administration Domain Model and related to existing thesauri, primarily the GEMET thesaurus, the  AGROVOC thesaurus, and the STW Thesaurus for Economics. The main purpose is to create a semantic model which may improve organization of knowledge, e.g. in terms of a formal ontology of the domain. The third version, which has been released in February 2019, presents about 200 English terms, revising and extending the vocabulary of version 2 of 2012. Defined concepts are drawn from two international domain standards, namely the ISO 19152:2012 Land Administration Domain Model (LADM) and the OGC Land and Infrastructure Conceptual Model Standard (LandInfra), 2016. Details on development of versions can be accessed through Version overviews. ISO TC 211 has initiated a revision of LADM, and the thesaurus may contribute towards greater consistency within the domain. The CaLAThe is encoded as a Simple Knowledge Organization System (SKOS), according to specifications developed by the World Wide Web Consortium (W3C). For more information see: cadastralvocabulary.org.

Academic resources

  1. A guide to scientific literature on cadastre and land management, prepared by Prof. Dr. Erik Stubkjaer
  2. ISI journal list for cadastral and land management research

Publications

Books / dissertations

  1. Alar A., Cagdas V., 2008. Mhendis, Mimar ve Uzmanlar iin Taşınmaz (Gayrimenkul Değerlemesi) (Real Estate Valuation, in Turkish), Second edition, Harita ve Kadastro Mhendisleri Odası, Ankara.

ISI journal articles

  1. Cagdas V., Stubkjr E., 2015. A SKOS vocabulary for Linked Land Administration: Cadastre and Land Administration Thesaurus. Land Use Policy, 49, 668679.
  2. Yilmaz A., Cagdas V., Demir H., 2015. An evaluation framework for land readjustment practices. Land Use Policy, 44, 153-168.
  3. Cagdas V., Stubkjr E., 2015. Core immovable property vocabulary for European linked land administration. Survey Review, 47(340), 49-60.
  4. Cagdas V., 2013. An Application Domain Extension to CityGML for immovable property taxation: A Turkish case study. International Journal of Applied Earth Observations and Geoinformation, 21(1), 545-555.
  5. Cagdas V., Stubkjr E., 2011. Design research for cadastral systems. Computers, Environment and Urban Systems, 35(1), 77-87.
  6. Cagdas V., Stubkjr E., 2009. Doctoral research on cadastral development. Land Use Policy, 26(4), 869-889.

Other refereed journal articles 

  1. Cagdas V., 2019. İmar hakkı esasına dayalı arazi ve arsa dzenlemesi (A development-right based land readjustment model, in Turkish). Harita Dergisi, 161, 66-57.
  2. Kara A., Cagdas V., Isikdag U., Turan B., 2018. Towards harmonizing property measurement standards. Journal of Spatial Information Science, 17, 87119.
  3. Kara A., Cagdas V., 2014. Trkiye İdari Birimler Dizini iin bir ontoloji tasarımı (An ontology design for Turkish Administrative Unit Gazetteer, in Turkish). Sigma Mhendislik ve Fen Bilimleri Dergisi, 32(3), 334-348.
  4. Cagdas V., Gr M., Demirel Z., 2003. Emlak vergisi ve kadastro (Immovable property taxation and cadastre, in Turkish). hkm Jeodezi, Jeoinformayon ve Arazi Ynetimi Dergisi, (89) 67-76.
  5. Cagdas V., Gr M., 2003. Srdrlebilir kalkınma ve kadastroda evrim (Sustainable development and evolution in cadastre, in Turkish). hkm Jeodezi, Jeoinformayon ve Arazi Ynetimi Dergisi, (89) 42-48.
  6. Alar A., Demir H., Cagdas V., 2003. Taşınmaz değerleme uzmanlığı ve harita mhendisliği (Real estate valuation profession and surveying engineering, in Turkish). hkm Jeodezi, Jeoinformayon ve Arazi Ynetimi Dergisi, (88) 15-20.

Conference proceedings

  1. Cagdas V., Stubkjr E., de Vries, W.T., van der Merwe C., Paasch J., Paulsson J., Schwery N., Ploeger H., Isikdag U., Kara A., 2018. Co-ownership shares in condominium A comparison across jurisdictions and standards (short version). 6th International FIG Workshop on 3D Cadastres, 2-4 October 2018, Delft, the Netherlands.
  2. Kara A., van Oosterom P., Cagdas V., Isikdag U., Lemmen C., 2018. 3D Data for Better Property Value Estimation in the context of LADM Valuation Information Model. 6th International FIG Workshop on 3D Cadastres, 2-4 October 2018, Delft, the Netherlands.
  3. Kara A., Cagdas V., Işikdag U., van Oosterom P., Lemmen C., Stubkjr E., 2018. Towards Turkish LADM Valuation Information Model Country Profile. FIG Congress 2018, İstanbul, Turkey 6-11 May 2018.
  4. Stubkjr E., Paasch J., Cagdas V., van Oosterom P., Simmons S., Paulsson J., Lemmen C., 2018. International code list management - The Case of Land Administration. The 7th Land Administration Domain Model Workshop, Zagreb, Croatia, 11-13 April 2018.
  5. Kara A., Cagdas V., Işikdag U., van Oosterom P., Lemmen C., Stubkjr E., 2018. The LADM Valuation Module Based on INTERLIS. The 7th Land Administration Domain Model Workshop, Zagreb, Croatia, 11-13 April 2018.
  6. Kara A., Işikdag U., Cagdas V., van Oosterom P., Lemmen C., Stubkjr E., 2018. A Database Implementation of LADM Valuation Information Model in Turkish Case Study. The 7th Land Administration Domain Model Workshop, Zagreb, Croatia, 11-13 April 2018.
  7. Kara A., Cagdas V., Lemmen C., Işikdag U., van Oosterom P., Stubkjr E., 2018. Supporting Fiscal Aspect of Land Administration through a LADM-based Valuation İnformation Model. 2018 World Bank Conference on Land and Poverty, The World Bank - Washington DC, March 19-23, 2018.
  8. Kara A., Cagdas V., Isikdag U., van Oosterom P., Lemmen C., Stubkjr E., 2017. Towards an International Data Standard for Immovable Property Valuation. FIG Working Week 2017, Surveying the world of tomorrow - From digitalisation to augmented reality. Helsinki, Finland, May 29June 2, 2017.
  9. Cagdas V., Kara A., Isikdag U., van Oosterom P., Lemmen C., Stubkjr E., 2017.  A Knowledge Organization System for the Development of an ISO 19152:2012 LADM Valuation Module. FIG Working Week 2017, Surveying the world of tomorrow - From digitalisation to augmented reality. Helsinki, Finland, May 29June 2, 2017.
  10. Kara A., Cagdas V., Isikdag U., and Turan B.O., 2017. Towards Development of Ontologies of International Property Measurement Standards. Pre-conference Workshop of the 20th AGILE International Conference on Geographic Information Science 2017, Bridging space, time, and semantics in GIScience. 9 May 2017, Wageningen, The Netherlands.
  11. Kara A., Cagdas V., Isikdag U., 2017. Tasinmaz Değerlemesinde Uluslararasi Bir Veri Standardina Dogru. TMMOB Harita ve Kadastro Mühendisleri Odasi, 16. Turkiye Harita Bilimsel ve Teknik Kurultayi, 3-6/05 2017, Ankara.
  12. Cagdas V., Kara A., van Oosterom P., Lemmen C., Isikdag U., Kathmann R., Stubkjr E., 2016. An initial design of ISO 19152:2012 LADM based valuation and taxation data model. ISPRS Annals of the Photogrammetry, Remote Sensing and Spatial Information Sciences., IV-2/W1, 145-154, doi:10.5194/isprs-annals-IV-2-W1-145-2016, 2016. 
  13. Cagdas V., Gr M., Kurt V., 2003. Property taxation and land management. II. Fdration Internationale des Gomtres (FIG) Regional Congress, Urban-Rural Interrelationship for Sustainable Environment, 02-05 December 2003, Marrakech, Morocco.
  14. Gr M., Cagdas V., Demir H., 2003. Urban-rural interrelationship and issues in Turkey. II. Fdration Internationale des Gomtres (FIG) Regional Congress, Urban-Rural Interrelationship for Sustainable Environment, 02-05 December 2003, Marrakech, Morocco.
  15. Gr M., Cagdas V., Demirel Z., 2003. Land consolidation as a tool of rural sustainable development. II. Fdration Internationale des Gomtres (FIG) Regional Congress, Urban-Rural Interrelationship for Sustainable Environment, 02-05 December 2003, Marrakech, Morocco.
  16. Demir H., Kurt V., Cagdas V., 2003. Housing financing in Turkey. II. Fdration Internationale des Gomtres (FIG) Regional Congress, Urban-Rural Interrelationship for Sustainable Environment, 02-05 December 2003, Marrakech, Morocco. 
  17. Cagdas V., Gr M., Demir H., 2002. Concept of ownership in land arrangement studies in Turkey. XXII. Fdration Internationale des Gomtres (FIG) Congress, 19-26 April 2002, Washington DC, USA.
  18. Gr M., Cagdas V., Demir H., 2002. A general overview of real estate valuation applications in Turkey. XXII. Fdration Internationale des Gomtres (FIG) Congress, 19-26 April 2002, Washington DC, USA.
  19. Alar A., Demirel Z., Demir H., Cagdas V., Gr M., Kurt V., 2003. Taşınmaz değerlemesi sistem tasarımı (A system design for real estate valuation, in Turkish). 4'nc Trkiye Harita Bilimsel ve Teknik Kurultayı, 31/03-04/04 2003, Ankara. 
  20. Demirel Z., Alar A., Demir H., Gr M., Kurt V., Cagdas V., 2003. Toprak dzenlemelerinde yeni yaklaşımlar (New approaches in land re-allocation, in Turkish). 4'nc Trkiye Harita Bilimsel ve Teknik Kurultayı, 31/03-04/04 2003, Ankara.

Conference presentations

  1. Kara A., Cagdas V., 2017. Arazi Yonetimi Temel Modeli (LADM) dayanakli Tasinmaz Değerleme Veri Modeli. TKGM Gayrimenkul Degerleme Calistayi, 28/02-03/03 2017, Izmir.
  2. Cagdas V., Stubkjr E., 2014. Supplementing INSPIRE through e-Government Core Vocabularies. The 8th INSPIRE Conference, 16-20/06 2014, Aalborg.
  3. Cagdas V., 2014. Cadastre and land registration systems: A brief introductionVortragsreihe im Sommersemester 2014 zum Themenkreis Land Management, 26/05 2014, Munich.
  4. Cagdas V., 2014. A research agenda for cadastre and land management: Information management aspect. Vortragsreihe im Sommersemester 2014 zum Themenkreis Land Management, 26/05 2014, Munich.
  5. Cagdas V., 2014. Kme degerleme sistemi: Veri ynetimi ve kurumsal degisim zerine. Tapu Kadastro Modernizasyon Projesi Taşınmaz Değerlemesi Orta Dnem Toplantısı, 27/02 2014, Istanbul

Teaching

Undergraduate level 

Immovable property law and Cadastre, 2014 continues
Real estate valuation, 2010 continues
Land information managament systems, 2014 continues
Land re-adjustment project, 2010 continues
Cadastre, 2012 2013
Immovable property law, 2010 2013
Expropriation, 2010 2013
Land consolidation, 2010 2013

Graduate level 

Advanced methods in cadastre, 2010 continues
Tasinmaz Degerlemesi ve Gelistirme Tezsiz Yksek Lisans Programi

Public tutorials

Lecturer, 2012. Real estate valuation for expropriation, tutorial for geodetic surveyors, organized by HKMO in Istanbul (10/11 2012)
Lecturer, 2011. Real estate valuation for expropriation, tutorial for geodetic surveyors, organized by HKMO in Istanbul (20/11 2011)
Lecturer, 2010. Real estate valuation for expropriation, tutorial for geodetic surveyors, organized by HKMO in Istanbul (06/11 2010)
Lecturer, 2009. Real estate valuation for expropriation, tutorial for geodetic surveyors, organized by HKMO in Istanbul (12-13/12 2009)
Lecturer, 2008. Real estate valuation for expropriation, tutorial for geodetic surveyors, organized by HKMO in Istanbul (25-26/10 2008); Izmit (01-02/11 2008); and Tekirdag (07-08/11 2008)
Lecturer, 2007. Real estate valuation for expropriation, tutorial for geodetic surveyors, organized by HKMO in Istanbul (10-11/11 2007), Izmit (24-25/11 2007), and Tekirdag (08-09/12 2007)

Cirriculum vitae

Education

Doctor of philosophy, 2001 2007. Yildiz TU, Institute of Science & Technology, Geomatic Engineering Programme
Master of science, 1999 2001. Yildiz TU, Institute of Science & Technology, Geomatic Engineering Programme
Bachelor degree, 1993 1997. Yildiz TU, Department of Surveying Engineering
High school, 1989  1992. Kabataş Erkek Lisesi, Besiktas

Employments

Associate professor, 2014 continues. Yildiz TU, Department of Surveying Engineering 
Assistant professor, 2010 2014. Yildiz TU, Department of Surveying Engineering
Research assistant, 1998 2010. Yildiz TU, Department of Surveying Engineering
Geodetic surveyor, 1997 1998. Istanbul-Bakirkoy Municipality, Directorate of Surveying and Expropriation
Geodetic surveyor, 1997 1998. Erdem Construction Inc., Construction of Istanbul-Esenyurt Natural Gas-fired Thermal Power Station

International mobility

Post-doc researcher, 03/2008  12/2008. Cadastral Development Research Group, Department of Development and Planning, Aalborg University, Denmark
Ph.D. researcher, 09/2006  02/2007. Department of Development and PlanningAalborg University, and participation to Land Management and Cadastral Development, focusing on Real Estate Taxation supervised by Prof. Dr. Erik Stubkjaer
Participant, 18/08/2008 22/08/2008. NordGISci08 Nordic Summer school in Geographic Information Science, organized at Hgskolan I Gvle, Sweden

Memberships

Scientific member, 2010 continues. Chamber of Surveying and Cadastre Engineers (HKMO), Commission on urban and rural land reallotment
Scientific member, 2002 continues. HKMO, Commission on real estate valuation
Member, 1996 continues. HKMO

Scholarships and awards

Post-doc scholarship, 2008. The Scientific and Technological Research Council of Turkey
Erasmus scholarship, 2007. European Union
The best overall presentation, 2002. Paper entitled A General Overview of Real Estate Valuation Applications in Turkey at XXII. Fdration Internationale des Gomtres (FIG) Congress, 19-26 April 2002, Washington DC, USA.

Research networks

Academia profile
Google scholar profile
ResearchGate profile
31/ 01 2014