What is the social tenure domain model (STDM), and where does it fit in land recording?

If you work in land administration anywhere that formal titling has never reached, you've probably run into STDM, or at least the acronym, in a donor report or a GLTN training agenda. It's worth knowing what it actually is, because it solves a narrower problem than people assume.

The Social Tenure Domain Model is a data standard and software tool for recording relationships between people and land where no formal cadastre exists, or where the formal cadastre only covers a fraction of the parcels on the ground. It was developed by the Global Land Tool Network (GLTN), a UN-Habitat-hosted partnership, specifically because standard land registration systems assume a clean chain: one parcel, one legal owner, one deed. That assumption breaks down fast in informal settlements, customary land areas, and post-conflict resettlement zones, where several people might hold overlapping, time-limited, or group-based claims to the same plot.

STDM gets around that by recording "social tenure relationships" instead of forcing every claim into an ownership box. A relationship links a person, or a group, to a spatial unit, and tags the type of claim: occupancy, customary right, lease, group membership, whatever applies locally. The tool itself ships as a plugin for QGIS, so a field team can capture this data on open-source GIS software rather than a proprietary cadastral system a small land office could never license.

Why it's called a "pro-poor" land recording tool

GLTN markets STDM explicitly as pro-poor, and that word earns its place here. Most land information systems are built around the end state: a title deed, backed by survey-grade boundaries, filed in a national registry. That end state is years away for most informal areas, and treating it as the only valid output leaves everyone living there off the map in the meantime.

STDM instead documents what's true today. A household occupies a plot. A widow holds use rights under customary rules her neighbors recognize but no court has ratified. A group of families shares access to a communal parcel. None of that is a title, but all of it is tenure information worth recording, because it's the evidence base a later adjudication process will work from. The continuum-of-land-rights thinking behind STDM treats informal occupancy and full freehold as points on the same spectrum rather than opposite categories.

Where STDM runs into the map it needs

STDM is strong on the relationship side: who claims what, and what kind of claim it is. It's less of an answer to the question that usually comes first in a settlement upgrading programme, which is simpler than it sounds: where are the plot boundaries and structures in the first place?

A field officer entering social tenure data into STDM still needs a spatial unit to attach that data to. In a surveyed area, that's the existing cadastral parcel. In an unsurveyed informal settlement, that spatial unit doesn't exist yet, and someone has to draw it, usually by walking the area with a GPS unit and a printed image, structure by structure, for weeks.

Cadastre Update takes a VHR satellite or aerial pass over that kind of area and delineates the structure footprints and candidate plot lines automatically, so the spatial layer a programme feeds into STDM, or into any adjudication workflow, exists before the field walk starts rather than because of it. It doesn't replace the community verification STDM is built around. It gives that process a drawn starting point instead of a blank one.

A few things STDM is not

It's not a land titling system on its own, and GLTN doesn't present it as one. It doesn't issue legal certificates, and in most jurisdictions it has no standing in formal law until a government decides to recognize its outputs. It's also not a satellite imagery or mapping tool; it has no mechanism for generating the boundary geometry it stores. It's a relational database with a spatial component, purpose-built for recording tenure claims that existing registries weren't designed to hold, and it does that job well within those limits.

If a tenure regularization programme is still waiting on the structure and plot layer before the STDM data entry can start, that's the gap worth closing first.