Plans & pricing

Free

£0 /month

For evaluating the tool or small residential sites.

3 generations per day
Up to 250 × 250m per site
12–20m elevation precision
CSV export for Revit, SketchUp, Rhino & more
3m & 6m precision
Sites up to 2 × 2km
Project history & saved sites
1m LiDAR elevation

Current plan

Pro

£39.99 /month

For individual architects working on real projects.

Everything in Free
3m, 6m, 12m, 20m spacing
Sites up to 2 × 2km
Project history & saved sites
LiDAR elevation where available
3D terrain preview
Priority support
Large site add-on available

Company

£29.99 /seat/month

For practices and studios. Scales with your team.

Everything in Pro
Per-seat billing — pay for who you add
Scales from 2 to unlimited seats
Shared project library
Team admin panel
Usage dashboard
Invoiced billing available
Large site add-on available

// Large Site Add-on — Pro & Company

For masterplans, landscape architecture, and infrastructure projects beyond 2×2km. Charged per generation — not per user.

Large Site

£5 / generation

Up to 5 km²
Pro & Company only
Charged at generation — not monthly

Extra Large Site

£15 / generation

Up to 20 km²
Pro & Company only
Above 20 km² — contact us

Import into your model

Works with Revit, SketchUp, ArchiCAD, Rhino,
and any software that accepts XYZ point data.

Revit 2022 and later · Toposolid workflow

Download your CSV

Click ↓ Download CSV above. The file contains X, Y, Z point data in metres, with a UTM origin coordinate in the filename for georeferencing.

Open the Massing & Site tab

In Revit, go to the Massing & Site tab in the ribbon. Make sure you are in a 3D view or a site plan view.

Create Toposolid from Import

Click Toposolid → Create from Import → Select Import Instance. In the dialogue, choose Specify Points File and navigate to your downloaded CSV.

Set units to Metres

When prompted for units, select Meter. All coordinates in the CSV are in metres relative to the UTM origin shown in the download filename.

Terrain created ✓

Revit builds the Toposolid surface from your point cloud. Accuracy depends on your plan — up to 0.4m vertical resolution on Pro with LiDAR data.

💡 Keep point count under 20,000 for best Revit performance. Use 6m or 12m spacing for sites over 1km².

Read the full Revit guide

SketchUp Pro · Sandbox tools

Download your CSV

Click ↓ Download CSV above. You'll need the Sandbox tools enabled or the free Undet plugin for large point clouds.

Enable Sandbox Tools

Go to View → Toolbars → Sandbox. This gives you the From Scratch and From Contours tools in your toolbar.

Import the CSV

Go to File → Import, set file type to Text files (*.csv) and select your file. SketchUp places the points as a 3D point cloud.

Generate terrain surface

Select all imported points, then use Sandbox → From Contours to generate a triangulated mesh surface.

Terrain mesh ready ✓

Your site topography is now a SketchUp group in metres. Use the Tape Measure tool to verify a known dimension if needed.

💡 The Undet plugin handles large Pro CSV point clouds significantly better than the native SketchUp importer.

Read the full SketchUp guide

ArchiCAD 25 and later · Mesh tool

Download your CSV

Click ↓ Download CSV above. ArchiCAD accepts XYZ survey data directly via the Mesh tool workflow.

Open Site Plan, set units to Metres

Switch to your Site Plan view. Set working units under Options → Project Preferences → Working Units → Metre.

Import survey data

Go to File → Interoperability → Merge and select your CSV. Or use Design → Create Mesh from Survey Data if available in your version.

Build the mesh surface

Select the imported points and use the Mesh tool to generate the terrain surface. Adjust ridge and valley lines for drainage accuracy.

Mesh terrain created ✓

Topography placed at real-world elevation. LiDAR data gives you accurate drainage gradients even on very shallow slopes.

💡 Use the Site Map image (↓ download above) as an underlay in ArchiCAD to visually verify the terrain aligns with your boundary.

Read the full ArchiCAD guide

Rhino 7/8 · Grasshopper compatible

Download your CSV

Click ↓ Download CSV above. Each row is X, Y, Z in metres. No headers to strip — clean plain text ready to import.

Import as point cloud

Use the Rhino command _Import and select your CSV. Set delimiter to comma, confirm XYZ column order.

Generate surface

Select the point cloud and run _Patch or _Drape for a NURBS surface. In Grasshopper, use a Delaunay Mesh component for a precise TIN.

Grasshopper workflow

Read File → Text Split → Construct Point → Delaunay Mesh. Gives you a parametric terrain mesh you can edit live and connect to your BIM model.

Terrain surface ready ✓

Export to Revit via Rhino.Inside or save as DWG/DXF. LiDAR accuracy is preserved through the entire pipeline.

💡 Rhino handles very large point clouds well — no need to thin your CSV before importing. Use the full-resolution file.

Read the full Rhino guide

Need help? aki@topo-grapher.com

Why our data is better
for real construction projects

Survey-grade terrain you can import, inspect,
and edit inside your own modelling software.

Most online terrain tools give you a visual, not a buildable model. Topo-grapher is built for the other case. Every output is a clean, editable point set at real-world coordinates, accurate to the resolution of the underlying official survey for your region.

Sourced from national mapping authorities

We work with the top-tier LiDAR and photogrammetry datasets published by national mapping agencies and geospatial institutes across Europe, the UK, and North America. The same data your surveyors and planners already reference, made accessible inside the tools you already use.

Resolution that actually serves BIM

On Pro, vertical accuracy reaches 0.4m or better in supported regions. That is close enough to drive drainage gradients, tie into site levels, and coordinate with civil engineers without needing to redo the terrain at tender stage.

Editable, not baked

The CSV is plain XYZ point data. You import it as a Toposolid, mesh, or NURBS surface and you own it from there. Smooth a point, raise a ridge, trim to a site boundary, the data is yours to shape. No black-box texture maps, no locked formats.

Georeferenced, not floating

Every export ships with a UTM origin in the filename. Your model lands at its real-world location, aligned with aerial imagery, cadastral maps, and any other georeferenced layer in your coordination workflow. No guessing, no manual offsets.

Consistent across borders

Every region uses a different authority, a different API, a different coordinate system. We handle that so you get a uniform XYZ file whether you are working a site in Copenhagen, the Cotswolds, or California. One workflow, whatever country the project is in.

Verifiable against public records

Because the underlying data is from official public sources, every point can be cross-checked against the same datasets used by municipal planners and engineers. If a point looks wrong, you can confirm it against the authoritative record. That matters when you are handing a model to a contractor.

The short version

Other platforms give you a picture of the terrain. We give you the terrain itself, as data, at the resolution your consultants actually need, ready to drop into Revit, Rhino, ArchiCAD, or SketchUp and carry through the whole project.

DTM vs DSM explained

Questions? aki@topo-grapher.com

How it works

Four steps from map to model.

01

Draw your site

Click the polygon tool in the map toolbar, then click around your site boundary on the map. Close the shape with a double-click or by clicking back on the first point. You can draw as many points as you need — curves, odd corners, nothing gets simplified.

💡 Zoom in first for tighter boundaries. Use the satellite layer to trace along actual site edges.

02

Choose point density

Select how close together your terrain points are spaced. 3m and 6m use LiDAR-grade data and are great for construction-level work. 12m is ideal for site feasibility and planning. 20m covers large masterplan territories quickly without massive file sizes.

3m — LiDAR 6m — Precise 12m — Site 20m — Masterplan

03

Set units & distribution

Pick Metres or Feet — the CSV will use whichever you choose. Then pick how points are arranged. Uniform grid gives you a perfectly regular mesh, great for Revit. Natural scatter adds slight variation that helps SketchUp and Rhino generate smoother terrain surfaces on irregular sites.

04

Generate & download

Hit the big Generate terrain button. Processing takes 5–30 seconds depending on site size and density. When it's done, download your CSV and import it straight into Revit, SketchUp, ArchiCAD, or Rhino — see the BIM export guide for step-by-step instructions for each package.

Questions about what point density to use? Drop us a line — we'll tell you exactly what works for your project type.

Accuracy by country

Best available source selected automatically for your location.

We pull from national mapping authorities wherever available. Higher-resolution national data always takes priority over continental or global fallbacks.

Region	Dataset	Resolution	Vert. accuracy
National LiDAR datasets
🇩🇰 Denmark	DHM/Terræn	0.4m	±0.05m
🏴󠁧󠁢󠁥󠁮󠁧󠁿 England	EA LiDAR Composite DTM	1m	±0.15m RMSE
🇳🇴 Norway	Kartverket DTM1	1m	±0.15m
🇪🇪 Estonia	Maaamet DTM	1m	±0.1m
🇨🇭 Switzerland	swissALTI3D	0.5m	±0.1m
🇫🇷 France	IGN RGE ALTI	1m	±0.2m
🇩🇪 Germany (NRW/BW/Hessen)	DGM1	1m	±0.2m
🇫🇮 Finland	NLS KM2	2m	±0.3m
🇨🇿 Czech Republic	ČÚZK DMR4G	5m	±0.18m RMSE
🇪🇸 Spain	IGN MDT (PNOA-LiDAR)	5m	±0.4m
🇺🇸 United States	USGS 3DEP	1–10m	±0.82m RMSE
🇨🇦 Canada	NRCan HRDEM	1m	±0.2m RMSE
Continental & global fallbacks
🇮🇸 Iceland	ArcticDEM	10m	±1–4m
🇪🇺 Europe (other)	EU_DTM / GLO-30	30m	±1–3m
🌍 Global (fallback)	Open-Meteo / SRTM	90m	±16m (90%)
Coming soon
🇳🇱 Netherlands	AHN3/AHN4	0.5m	±0.05m
🇯🇵 Japan	GSI DEM	5–10m	±1m

Data sourced from open public datasets under their respective licences. The best available source is selected automatically based on your drawn boundary.

Full coverage & resolution by country

FAQ

Common questions, contact, and legal info.

What format is the download?

A plain CSV with X, Y, Z columns in metres (or feet if you selected that). No header row — just numbers, ready to import. The UTM origin coordinates are included in the filename so you can georeference your model.

What is a point cloud?

What's the biggest site I can generate?

Free accounts: up to 1 km². Pro: up to 4 km² included, with large-site add-ons up to 100 km² available. Company plans: same as Pro with shared access across your team.

How many sites can I generate per day?

Free: 3 per day. Pro and Company: unlimited. Day limits reset at midnight UTC.

My country isn't listed — will it still work?

Yes. Anywhere not covered by a national dataset falls back to Copernicus GLO-30 (30m global) and then Open-Meteo/SRTM (90m). The tool works globally — just expect lower resolution outside our high-accuracy regions.

Can I use this data for real construction?

The data is sourced from official national surveys and is accurate enough for preliminary design, site feasibility, and BIM coordination. For final engineering decisions, you should verify against official municipal records or commission a land survey.

Does Pro require a contract or minimum term?

No contract, no minimum term. Monthly billing, cancel any time. Company plans are also monthly per seat.

Can I get an invoice / receipts?

Yes. Receipts are sent automatically by Stripe after each charge. For custom invoicing or purchase orders, contact us at aki@topo-grapher.com.

Contact

Questions, feedback, or problems? Email aki@topo-grapher.com. We reply within 24 hours on business days.

⚠ Disclaimer

Topo-grapher is a data-gathering and export tool intended for use within 3D modelling software. It is not liable for errors, omissions, or any consequences arising from use of this data on real construction sites or in any other context.

Elevation data is sourced from the best available public datasets and is as accurate as the underlying source permits. For construction or engineering decisions, verify terrain data against official municipal or regional records, or commission a land survey.

Site Columns Tool

Construction site pinpoints

Orange IFC columns to mark your exact site position

1

Enter the GPS coordinates of your construction site corners or entry points using the coordinate rows below.

2

Click ⊕ Add Site Column for each point. An orange marker appears on the map and an orange frame connects all your columns.

3

Generate and download your terrain as normal. A separate _site_columns.ifc file downloads automatically alongside it.

4

Import the IFC into Revit, ArchiCAD, or Rhino. Place your site perimeter using the orange columns as reference points, then delete or hide the columns.

🗺️

Use the Streets map, not satellite. The Streets basemap shows accurate road geometry which makes it far easier to verify your GPS coordinates are landing in the right place. The Coordinates button switches to Streets automatically.

Each IFC column is 0.3 × 0.3 × 4m, orange, and carries a parameter note: "Delete or hide after placing site perimeter".

Real terrain. BIM-ready.

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