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Architecture

How to build a 3D site context model for a development proposal or design presentation

By Coulter Heiberger · Updated

Give a development proposal or design review real surroundings, fast: elevation, imagery, building massing, and land cover around your project.

A 3D site context model is the real-world surroundings of a project (terrain, aerial imagery, and the buildings and streets around the site) that you place your design into for a development proposal, a design review, or a board presentation. It answers "what is actually there?" and makes a proposal legible to clients, planners, and stakeholders. The slow way is to gather elevation, imagery, and footprints from separate sources and stitch them together for each project. The fast way is to draw the area on Mantle Place, read its Site Brief, and order a bundle: terrain, imagery, building massing where mapped, and more, plus a site plan ready to print, so your massing sits in true surroundings instead of a blank plane.

answers

Quick answers

How do I get a 3D site context model for a development proposal?

Draw the site and its surroundings on Mantle Place, check its Site Brief, and order the bundle: $5 plus $2 per km², free at 2 km² and under. Terrain, aerial imagery, building massing where mapped, and a printable site plan all come in it at no extra cost, ready to set the proposal into.

Which formats does a 3D site context model come in?

The bundle carries GeoTIFF elevation and imagery, terrain as GLB, OBJ, and USDZ, buildings as GLB and IFC, DXF contours and LandXML, GeoPackage vectors, and a Drawings folder with georeferenced CAD linework and a plan sheet as PDF and SVG. Every format comes with the order at no extra cost.

Does the 3D site context model include buildings?

Yes, as building massing where mapped: untextured extrusions of the mapped footprints, in every bundle as GLB and IFC at no extra cost. Where no footprints are mapped the model carries terrain, imagery, and streets but no buildings; the Site Brief previews what is mapped before you pay.

Can I hand a site plan to the client or the planners?

Yes. The bundle carries a site plan sheet at two sizes, as a PDF to print and an SVG to edit, with a north arrow, scale bar, legend, and title strip, plus the Site Brief as a PDF.

Can the whole team use the same 3D site context model?

Yes. The site context model is not locked to one tool: the architect places massing in Revit, the visualization team renders in Twinmotion, the developer walks it in Unreal, and more, all from one bundle cut to the same georeferenced extent.

step by step

How to do it

  1. Frame the context

    Decide how much of the surroundings the presentation needs: the parcel, the block, or the wider neighborhood. Then draw that area.

  2. Check the site

    Read the Site Brief before you pay: area, relief, slope, and land cover, with the mapped buildings previewed in 3D and a sun and shadow study.

  3. Get the bundle

    Buy the bundle for that area. Every file is built at once and clipped to your extent; in your vault, download the set for your tool.

  4. Drop it into your tool

    Import the bundle into Revit, Rhino, Unreal, and more so the context arrives at the correct scale and position.

  5. Place your design

    Set your massing or model into the context, then light, frame, and render the views for the review.

questions

Frequently asked

What is a site context model?

It is the real-world surroundings of a project (terrain, aerial imagery, and nearby buildings and streets) that you place a design into so a review reads against true context.

Which tools can I use the context model in?

Mantle Place bundles use portable formats that import into Revit, Rhino, Unreal, and more. Every format comes with the order; in your vault you download the set for your tool.

How fast can I get a context model for a site?

Draw the area, order the bundle, and download it: minutes rather than the hours of sourcing and stitching that assembling context by hand takes.

Get the data for your site.

Draw your area, read its Site Brief, and download a bundle you keep: terrain, imagery, CAD drawings, and more, ready for Unreal, Revit, Rhino, and more. $5 plus $2 per square kilometer, and 2 km² and under is free.

Native plugins: Mantle Place for Unreal and Mantle Place for Revit.

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