1. Towards a Robust Social Tenure Domain Model
Conference on Challenges for Land Policy
And Administration
Washington DC
February 14th 2008
Christiaan Lemmen
Peter van Oosterom
Clarissa Augustinus
Paul van der Molen

2. Land registry in practice

3. Post-disaster countries
Tsunami: Data lost,
difficult to recover
risk of paper registers: no back-up
employees of this office were killed
However, standardized
system LADM does help
to get re-started

4. Proposal (FIG, Washington 2002) by Lemmen/van Oosterom
Develop standard Core Cadastral Domain Model (CCDM), based on core
object-right-subject
Object-orientation (UML)
Model Driven Architecture (MDA)
Accepted by large community
Maximize co-operation, minimize double effort

5. Relations
Right
Subject
Object
Parcel ha
Ownership /1
NP Juan

6. Relations Right Subject Object Ownership 1/2 NP Juanita
Parcel ha
Ownership /2
NP Carlos

7. Relations Right Subject Object Ownership 1/2 NP Johanna Parcel 6 50 ha
NP Javier
Land Use
NNP TCO

8. Relations Right Subject Object Land Use 1/1 NP Elisabeth
Parcel ha
Parcel ha

9. Transaction Right Subject Object Parcel 9 1 ha Ownership 1/1 NP Juan
Mortgage €
NNP Banco
Parcel ha
Ownership /1
NP Juan

10. Transacion: Sub-division
Right
Subject
Object
Parcel ha
Ownership /1
NP Juan
Ownership /1
NNP
Parcel ha
NP Juan
Parcel ha

11. The Social Tenure Domain Model
Person
Social Tenure Relationship
Spatial Unit
Parcel
Person
Right
Object
Subject
Social tenure

12. Range of ‘Person’ - Types
Group with non-defined membership
Group - Tribe
Group of groups
Natural Person
Company
Municipality
Co-operatives
Married couple
Ministry
Etc << can be extended

13. Social Tenure (Right) - Continuum
Ownership
Apartment - Right
Co-operations
Occupation
Tenancy
Possession
Miri – Milk – Waqf
Restriction Types
State Property
Etc << can be extended
Non-formal and informal rights
Customary Types,
Indigenous Rights
Tenancy
Possession
(Certificate of) Comfort
Disagreement
Overlap
Uncontrolled Privatisation
Conflict situations
Etc << can be extended

14. (Social) Credit Right – ‘Continuum’
Micro Credit
Group Loan
Individual Loan
Loan on a Constructed Residence
Mortgage
Etc << can be extended

15. Spatial Units Quality labels Parcel Apartment Building Customary area
Group of area´s
Etc << can be extended
Quality labels
One Point - inside polygon
One point - street axes
Set of Lines
Polygon (low accuracy)
Polygon (high accuracy)
3D Volume
Etc << can be extended

16. Data Acquisition
Spatial Units
Range of Persons
Tenure type /
Collateral
Spatial
Administrative

17. Different Data Acquisition Approaches
Residential
Area
Residential
Area
Slum
Slum
Urban Business District
Customary Area
Slum

21. Development of the LADM-STDM
New ISO Work Item Proposal has been proposed by FIG (N2385 – 1st of February 2008)
Voting in May 2008
Prototype development UN Habitat/ ITC
Publications

22. Conclusion
A person (natural, non natural), a group of persons or a group of groups can have a one or more types of rights or SocioalTenureRelations associated, where each right concerns one or more SpatialUnits; SpatialUnits can overlap and can always be identified with a label.
A right or SocialTenureRelation is always in between Persons and SpatialUnits.
There can be different registrations/recordation's in Land Administration for one territory

23. Kisumu

24. Anthony Lamba

27. Kisumu: evaluation
Enumeration: different type of registration and documentation
Accepted by the community
Data sets are convertible to STDM
Co-ordinate systems allow for combination of data-sources: also historical
Maintenance of data: low quality cadastral map
Maintenance of data: enumeration data
Need for GNNS Infrastructure…
Need for co-operation
Policies may require different data acquisition methods

28. Thank you