Prerequisites
- A Revit installation supported by the Speckle Connector — Revit 2023, 2024, 2025, 2026, or 2027 New.
- Your Real-Time LCA Speckle credentials for
https://api.realtimelca.com(sent by email when you activated your account — see Introduction to Speckle). - A Real-Time LCA project configured with a Speckle Connection (see Create a new project).
Install the connector
Install the Speckle Connector for Revit from releases.speckle.systems. Restart Revit after installation — the connector appears as a Speckle tab in the ribbon.Sign in to the Real-Time LCA Speckle server
The first time you launch the connector, the Welcome to Speckle dialog opens with the public Speckle server (https://app.speckle.systems) pre-filled.

Welcome dialog with the default Speckle server URL

Welcome dialog pointed at the Real-Time LCA Speckle server
api.realtimelca.com/authn/login.

Speckle login on the Real-Time LCA server
Authorize the connector
After logging in, Speckle asks you to authorize Desktop Connectors to access your account.
Authorize application screen

Authorization success

Connector ready to publish
Publish a model
Step 1: Pick a Speckle project
Click Publish on the Hello screen. The connector shows every Speckle project your user can edit on the Real-Time LCA server.
Select the Speckle project that matches your Real-Time LCA project
Step 2: Pick a model
Each Speckle project contains one or more models — for example, structural or architectural — that map to the discipline models you selected during Speckle model configuration.
Select model dialog
Step 3: Choose what to send
The Select objects dialog lets you decide which part of the Revit model is sent.
Select objects mode
- Selection — the elements currently selected in Revit.
- Views — every element visible in a specific view (the recommended option for Real-Time LCA, because the view defines the scope of the calculation).
- Categories — every element of one or more Revit categories (for example, Walls, Floors, Columns).

Pick a Revit view to publish
Step 4: Confirm publish settings
Scroll down in the dialog to review the publish settings before sending.
Publish settings
Click Publish to send the model. The Real-Time LCA project receives the new version automatically and refreshes the BIM types and quantities.
Parameter mapping
Real-Time LCA looks for the parameter configured on the project (by defaultBIMTypeCode) to group elements into BIM types. Make sure this parameter is populated on your Revit elements before publishing — see Speckle model configuration for how the mapping is set on the project side.
