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

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 (version 2.0), shortly CaLAThe  is a Knowledge Organization System for the domain of cadastre and land administrationIt provides a controlled vocabulary, which is 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 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

Açlar A., Cagdas V., 2008. Real estate valuation. Second edition, Chamber of Surveying and Cadastre Engineers, Ankara, 486 pages (in Turkish).
Cagdas V., 2007. A model proposal for Turkish real estate taxation system, Ph.D. dissertation, Yildiz TU  Institute of Science & Technology, Geomatic Engineering Programme (in Turkish).

ISI journal articles

Cagdas V., Stubkjær E., 2015. A SKOS vocabulary for Linked Land Administration: Cadastre and Land Administration Thesaurus. Land Use Policy, 49, 668–679.
Yılmaz A., Cagdas V., Demir H., 2015. An evaluation framework for land readjustment practices. Land Use Policy, 44, 153-168.
Cagdas V., Stubkjær E., 2015. Core immovable property vocabulary for European linked land administration. Survey Review, 47(340), 49-60.
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.
Cagdas V., Stubkjær E., 2011. Design research for cadastral systems. Computers, Environment and Urban Systems, 35(1), 77-87.
Cagdas V., Stubkjær E., 2009. Doctoral research on cadastral development. Land Use Policy, 26(4), 869-889.

Other refereed journal articles 

Kara A., Cagdas V., 2014. An ontology design for Turkish Administrative Unit Gazetteer. Journal of Engineering and Natural Sciences, 32(3), 334-348 (in Turkish).
Cagdas V., Gür M., Demirel Z., 2003. Immovable property taxation and cadastre. Journal of hkm Geodesy, Geo-information, and Land Management, (89) 67-76 (in Turkish).
Cagdas V., Gür M., 2003. Sustainable development and evolution in cadastre. Journal of hkm Geodesy, Geo-information, and Land Management, (89) 42-48 (in Turkish).

Açlar A., Demir H., Cagdas V., 2003. Real estate valuation profession and surveying engineering. Journal of hkm Geodesy, Geo-information, and Land Management, (88) 15-20 (in Turkish).

Conference proceedings

Kara A., Cagdas V., Isikdag U., van Oosterom P., Lemmen C., Stubkjær 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 29–June 2, 2017.
Cagdas V., Kara A., Isikdag U., van Oosterom P., Lemmen C., Stubkjær 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 29–June 2, 2017.
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.
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.
Cagdas V., Kara A., van Oosterom P., Lemmen C., Isikdag U., Kathmann R., Stubkjær 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.
Cagdas V., Gür M., Kurt V., 2003. Property taxation and land management. II. Fédération Internationale des Géomètres (FIG) Regional Congress, Urban-Rural Interrelationship for Sustainable Environment, 02-05 December 2003, Marrakech, Morocco.
Gür M., Cagdas V., Demir H., 2003. Urban-rural interrelationship and issues in Turkey. II. Fédération Internationale des Géomètres (FIG) Regional Congress, Urban-Rural Interrelationship for Sustainable Environment, 02-05 December 2003, Marrakech, Morocco.
Gür M., Cagdas V., Demirel Z., 2003. Land consolidation as a tool of rural sustainable development. II. Fédération Internationale des Géomètres (FIG) Regional Congress, Urban-Rural Interrelationship for Sustainable Environment, 02-05 December 2003, Marrakech, Morocco.
Demir H., Kurt V., Cagdas V., 2003. Housing financing in Turkey. II. Fédération Internationale des Géomètres (FIG) Regional Congress, Urban-Rural Interrelationship for Sustainable Environment, 02-05 December 2003, Marrakech, Morocco.
Cagdas V., Gür M., Demir H., 2002. Concept of ownership in land arrangement studies in Turkey. XXII. Fédération Internationale des Géomètres (FIG) Congress, 19-26 April 2002, Washington DC, USA.
Gür M., Cagdas V., Demir H., 2002. A general overview of real estate valuation applications in Turkey. XXII. Fédération Internationale des Géomètres (FIG) Congress, 19-26 April 2002, Washington DC, USA.
Açlar A., Demirel Z., Demir H., Cagdas V., Gür M., Kurt V., 2003. A system design for real estate valuation. Proceedings of IV. Turkish Scientific and Technical Surveying Congress, 31/03-04/04 2003, Ankara (in Turkish).
Demirel Z., Açlar A., Demir H., Gür M., Kurt V., Cagdas V., 2003. New approaches in land re-allocation. Proceedings of IV. Turkish Scientific and Technical Surveying Congress, 31/03-04/04 2003, Ankara (in Turkish).

Conference presentations

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.
Cagdas V.
,
 Stubkjær E., 2014. Supplementing INSPIRE through e-Government Core Vocabularies. The 8th INSPIRE Conference, 16-20/06 2014, Aalborg.
Cagdas V., 2014. Cadastre and land registration systems: A brief introductionVortragsreihe im Sommersemester 2014 zum Themenkreis Land Management, 26/05 2014, Munich.
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.
Cagdas V., 2014. Küme değerleme sistemi: Veri yönetimi ve kurumsal değişim üzerine. Tapu Kadastro Modernizasyon Projesi Taşınmaz Değerlemesi Orta Dönem Toplantısı, 27/02 2014, Istanbul

Teaching

Undergraduate level 

Immovable property law and Cadastre, 2014continues
Real estate valuation, 2010 – continues
Land information managament systems, 2014continues
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
Taşınmaz Değerlemesi ve Geliştirme Tezsiz Yüksek Lisans Programı

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, Beşiktaş

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. NordGISci’08 Nordic Summer school in Geographic Information Science, organized at Högskolan I Gävle, Sweden

Administrative assignments

Departmental coordinator, 2012 – continues. Yildiz TU, Office of International Relations
Departmental coordinator, 2011 – 2014. 
Yildiz TU, European Union Office

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. Fédération Internationale des Géomètres (FIG) Congress, 19-26 April 2002, Washington DC, USA.

Research networks

Academia profile
Google scholar profile
ResearchGate profile
31/ 01 2014