Representative work

The kind of ground we cover.

Client details are confidential, so the projects below are illustrative of the scale and type of work we take on across Lagos and beyond — from single-plot boundary surveys to multi-hectare estate layouts. Ask us for references relevant to your project type.

Our activities

Surveying & Geospatial Work in Action

The kinds of work OAS carries out across land, engineering, construction and spatial information.

**Land & cadastral surveying**Boundary and control observations on site.

**Engineering & construction surveying**Checking set-out and as-built work against the drawings.

**Topographical surveying**Recording levels, contours and existing features.

**Hydrographic surveying**Positioning and depth data collected from the water.

**Aerial mapping / UAV**Large and hard-to-reach sites captured from the air.

**GIS & spatial analysis**Turning survey data into structured spatial information.

**Land & property investigation**Title and records reviewed before you commit.

**Property documentation & development**Plans and documents reviewed around the site.

**Client consultation**Scoping the project with the client before work begins.

**Professional training**Hands-on field practice with levelling equipment.

Projects

Selected Projects & Experience

Each project will be presented as a case study: the challenge, the scope, the technical approach, the deliverables and the outcome.

Case studies in preparation

Verified OAS project case studies will appear here. For each project we will show the client or sector (where disclosure is permitted), location, objective, scope of work, methodology, deliverables, outcome and project images.

To be added — project details and photographs supplied by OAS.

Residential Estate Boundary Survey

Cadastral·Lekki, Lagos

Perimeter survey and beacon re-establishment for a multi-plot residential estate, tied to government control.

42-Plot Estate Layout & Subdivision

Layout·Ibeju-Lekki, Lagos

Layout design and individually beaconed plot subdivision for a mid-size residential development.

Drone Orthomosaic & Volumetric Survey

Drone·Ogun State

UAV mapping and stockpile volumetrics for a construction materials yard, delivered in under a week.

As-Built Topographic Survey

Topographic·Victoria Island, Lagos

Post-construction as-built verification for a commercial development, cross-checked against approved drawings.

Waterfront Boundary Determination

Cadastral·Lagos Lagoon Corridor

Shoreline and waterfront boundary survey within the 200m lagoon corridor for a marina development.

Portfolio-Wide GIS Mapping

GIS·Multiple LGAs, Lagos

Digitised parcel database and interactive map for an investor's multi-site land portfolio.

Your project could be next

Tell us what you're working on.

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