The Building Coder

RevitLookup Geometry Visualisation

New RevitLookup BIM element geometry visualization, and 1000 GitHub stars – Versions 2025.0.5, 2025.0.6 and 2025.0.7 – Wiki... Read more →

Revit 2025 API Video and Hiding Linked Elements

The video recording on what's new in the Revit 2025 API has been released, and we discuss a nice example combining element pre-selection and PostCommand – Revit 2025 API video – Hiding linked elements... Read more →

Revit 2025.1 and Handling Lack of UI in DA

The Revit 2025.1 update release, placing a detail group in ASP Design Automation, lacking the UI, a hacker's guide to LLM and an LLM retrieval augmented generation in 10 lines of code... Read more →

Migrating VB to .NET Core 8 and AI News

Revit 2025 API migration of VB.NET add-ins to .NET Core 8 and advances in LLMs and AI, Claude, ChatGPT, Gemini, Meta AI, 3D genAI, web scraping, spatial referring, digital twins... Read more →

What's New in the Revit 2025 API

The Revit 2025 API contains significant enhancements for add-in developers – Information sources – What's new in previous versions – Detailed table of contents – API Changes – API Additions... Read more →

Migrating from .NET 4.8 to .NET Core 8

The Revit 2025 API is based on .NET Core 8, upgrading from the previous .NET 4.8 framework – .NET Core migration webinar recording – Revit API .NET Core migration guide... Read more →

RevitLookup Hotfix and The Revit 2025 SDK

RevitLookup HotFix 2025.0.1 has been released, and I continue the exploration of the Revit 2025 API – Revit 2025 SDK download – Comparison with previous SDK – Integration into RevitSdkSamples – Compiling the Revit 2025 SDK samples – Custom add-in context menu... Read more →

The Building Coder Samples 2025

I migrated The Building Coder samples to Revit 2025 – Compilation environment – .NET upgrade assistant – Revit API assemblies – Errors and warnings – Conclusion... Read more →

Revit 2025 and RevitLookup 2025

Revit 2025 has been released and the new Revit API is now based on .NET Core – PackageReference versioning support – RevitLookup 2025 – Revit developer starter kit – Revit 2025 macros with Visual Studio 2022 – Cheap Chinese AI chip... Read more →

Refresh Graphics, Start View and Excel

Refreshing graphics, exchanging data, setting the start view, and random titbits related to AI, politics and climate – UpdateAllOpenViews – Refreshing spot elevation prefix – Excel data exchange options – Defining the start view – How big is a LLM – Base rate fallacy – Last year was hot – Previous climate changes negligeable – PV panel price trend... Read more →

.NET Core Preview and Open Source Add-In Projects

Open-source related discussions, interesting Revit API and AI related news – Revit preview release with C# 7 – RevitLookup 2024.0.9 is here – RevitPythonDocs for Dynamo and pyRevit – New Revit SDK sample browser and launcher – Purge add-in with rave reviews – SpeedCad tools OptionsBar and StatusBar – Managing multiple Revit API versions – DesignScript, Rhino, and other geometry libraries – Trading glass beads for AI IP... Read more →

Revit 2024.2 Update with UDA Preview

The recent Revit 2024 update release is interesting for developers as well – Autodesk Revit 2024.2 update – Extensible storage schema conflicts in Revit 2024 – Universal data access UDA in Revit 2024.2 – Inpoly.c point in polygon algorithm... Read more →

Docs, Lookup, MEP Calculation and APS DevCon

Good news on APS and the Revit API for the weekend – APS DevCon in Munich and SF – Forma for AEC – RevitApiDocs supports Revit 2024 – RevitLookup 2024.0.8 – User MEP calculation 2024 – Wastewater pipe calculation – The password game... Read more →

Sustainability, Lookup, Sub-Elements and Wall Types

Forma sustainability flyer – RevitLookup 2024.0.6 and support for previous releases – Modify view workset editable – Selection SetReferences – WallType naming best practices... Read more →

64 Bit Ids, Revit and RevitLookup Updates

Revit and RevitLookup updates and 64 bit element id handling – Revit 2023.1.2 – Revit 2024.0.2 – RevitLookup 2024.0.5 – Backward compatible 64 bit element id – 15-minute cities – Cloud data carbon footprint – Live annotated `https` request log... Read more →

Dark Icons, NewFamilyInstance and AI News

Hacks for dark icons supporting Revit 2024 theme switching and news from the ever-accelerating AI revolution – Dark theme icons by ImageMagick – Embed dark theme icon name in BitMapSource – New NewFamilyInstance overload – Open-source AI surging ahead – Timeline of major milestones crossed – Non-technical explanation of AI and deep learning – Using AI to read your thoughts – AI emergent abilities may not be emergent after all – Risk of AI manipulation... Read more →

Configuring RvtSamples 2024 and Big Numbers

Configuring RvtSamples 2024 – DatumsModification – ContextualAnalyticalModel – Infrastructure Alignments – Toposolid – Conclusion – Consuming huge numbers of element ids... Read more →

Nice Accelerator and Compiling the Revit 2024 SDK

APS cloud accelerators in Nice and Medellin – Compiling the Revit 2024 SDK samples – Visual introduction to machine learning... Read more →

News Reel, Roadmap and RevitLookup Updates

More news and updates related to Revit 2024, and some little titbits on AI and literature: – News reel and AEC roadmaps – Revit API training – RevitLookup 2024 updates – Free Dolly open-source instruction-tuned LLM – Websites powered by AI – Walkaway by Cory Doctorow... Read more →

What's New in the Revit 2024 API

The Revit 2024 API contains significant changes and enhancements for add-in developers – Information sources – What's new in previous versions – Detailed table of contents – API Changes – API Additions... Read more →

Revit 2024 and RevitLookup 2024

Revit 2024 released and RevitLookup 2024 enhanced with new UI, Windows 11 support, new core, extensability and usability features – Brand-new user interface – Themes – Extended context menu – Tooltips – Snoop Selection on Modify tab – Smooth navigation – Windows 11 Mica effect and Snap Layouts – Searchbar – Brand-new Engine core – Extensions – Display all methods – Generic names support – Methods overloads – Extensible storage – Extending Functionality – Snoop Point, Sub-Element, UI Application – Component manager – PerformanceAdviser – Registry research: schemas, services, updaters – Explore built-in and APS (formerly Forge) units – Event monitor – Reworked search – Visual search in a project – OTA update – RevitLookup ideas – Vote: Where would you like to snoop? ... Read more →

Roadmap AmAs and Handling Multiple Updaters

Recordings of the roadmap presentations, handling updaters and worksharing – Community conversation roadmap AMAs – Platform Services Parameters API – Handling multiple updaters – WorksharingUtils help check element status – Chuong Ho is featured Speckle developer... Read more →

SDK, Add-In Wizard and TrackChanges Updates

Analysing the recent Revit SDK update, and still setting up my new Mac PC – What's new in Revit 2023.1 – Revit 2023.1 SDK update – Add-In wizard template in VS 2022 – Track work with element lister + TrackChanges... Read more →

Extensible Storage Schema Deletion

A new team member, new Revit API and WPF tutorials, and new insights on handling extensible storage – Welcome, George! – WPF form UIApplication access – Mazri's Revit, Dynamo, web and WPF playlists – Extensible storage schema deletion – Extensible storage schema conflict... Read more →

MEP API Intro and RevitPythonShell Lookup Nuptials

Back to the beginning with a quick look at the Revit MEP API, and a great step forward for RevitPythonShell – Revit MEP API intro – RevitPythonShell RevitLookup nuptials... Read more →

Outer Walls, Lookup Update and Filtering

Freshening up a few of our favourite recurring topics – RevitLookup update – Filtering for multiple built-in categories – Retrieving all outer walls – Zen and the art of React programming... Read more →

TBC Samples 2023 and the New Structural API

Migrating The Building Coder samples, I encountered the same problems as others trying to update obsolete structural API code, so let's take a look at some resources assisting us in that area – Not migrating the derived analytical model – Revit 2023 Structural API... Read more →

What's New in the Revit 2023 API

The Revit 2023 API contains many exciting enhancements for add-in developers – Information sources – What's new in previous versions – Detailed table of contents – API Changes – API Additions... Read more →

Compiling the Revit 2023 SDK Samples

I log my work compiling the new Revit 2023 SDK and setting up RvtSamples to load the external commands – Update the RevitSdkSamples repo – Set the Revit API references – Eliminate processor architecture mismatch warning – Set up RvtSamples – DatumsModification – ContextualAnalyticalModel – CivilAlignments... Read more →

Revit 2023 and RevitLookup 2023

Revit 2023 has been released, including the Revit 2023 SDK, and so has RevitLookup 2023... Read more →

RevitLookup, WPF, Preventing Modification

Different approaches to prevent modification of certain elements and the latest news on RevitLookup – Prevent modification – RevitLookup updates – RevitLookupWpf – Pilcrow... Read more →

WallCrossSection Renaming in the Revit 2022.1 API

Breaking news from the Revit development team on the WallCrossSection to WallCrossSectionDefinition renaming in the Revit 2022.1 API update... Read more →

What's New in the Revit 2022.1 API

The Revit 2022.1 API includes some important enhancements addressing new Revit product functionality and developer wishes and requests – Information sources – What's new in previous versions – Diff to the Revit 2022 SDK – API additions... Read more →

Revit 2022.1 SDK, RevitLookup Build and Install

Exciting news with a lot of changes to RevitLookup and The Building Coder samples – Revit 2022.1 SDK released – WallCrossSection vs. WallCrossSectionDefinition – RevitLookup build and install – Bye-bye lookup builds – The Building Coder samples revamped – Copy as HTML update – Image cleanup and a robot arm... Read more →

View Sheet from View and Select All on Level

Increasing numbers of of Python and Dynamo oriented topics in the Revit API discussion forum, and a final deprecated API clean-up – The Building Coder samples clean – Retrieving all elements on level – Get ViewSheet from View – Fabrication transaction in Dynamo... Read more →

Revit Roadmap, API and DA4R Survey

Opportunities to provide feedback on the Revit product, the Revit API and the Forge Design Automation API for Revit – Revit public roadmap update – Revit and DA4R API survey 2021 – MacOS Big Sur upgrade – The Economist on ransomware and cybersecurity... Read more →

Installer, List of Failures, Adjacent Rooms and Walls

We discuss enhancements to RevitLookup, a list of all built-in Revit failures, and a neat utility to determine all room-wall adjacencies – Adjacent rooms and walls – List of all built-in failures – Recent RevitLookup updates – RevitLookup installation... Read more →

ForgeTypeId and Units Revisited

A few new aspects of the Revit 2022 unit handling API and ForgeTypeId usage – FixtureUnit ParameterType – Revit 2022 unit handling API in Dynamo – String values for Forge units – Unit conversion without knowing – How will we live together?... Read more →

RevitLookup Update, Fuslogvw and Override Joins

Here are a couple of the interesting topics that came up in the last couple of days – Numerous RevitLookup enhancements – Revit API Labs training material 2022 – Visual Studio Revit add-in templates 2022 – The SetGeometryCurve overrideJoins argument – Exploring assembly reference DLL hell with Fuslogvw... Read more →

What's New in the Revit 2022 API

The Revit 2022 API includes an exceptional list of exciting enhancements for add-in developers, including numerous developer wishes and requests that have now been explicitly addressed – Information sources – What's new in previous versions – Detailed tasble of contents – API Changes – API Additions... Read more →

Revit 2022 SDK and The Building Coder Samples

The Revit 2022 SDK is now available for download from the Revit Developer Centre autodesk.com/developrevit. I logged my experiences installing it, setting up RvtSamples, loading the SDK external commands, and migrating The Building Coder samples to the new release – First the logs – Revit 2022 SDK warnings – Setting up RvtSamples – The Building Coder samples migration – ParameterType and ForgeTypeId – O'Reilly answers... Read more →

Revit 2022 Migrates BIM360 Team to Docs

We continue the foray into Revit 2022 enhancements with a real-world migration tool using the new SaveAsCloudModel functionality and the flat migration of RevitLookup – Save as cloud model from BIM360 Team to Docs – RevitLookup 2022 – A librarian's take on corona... Read more →

PDF Export, ForgeTypeId and Multi-Target Add-In

Revit 2022 has been released. Two important features are parameter API enhancements and built-in PDF export functionality – Replace deprecated ParameterType with ForgeTypeId – Multi-target 2021 and 2022 using MSBuild – PDF export default paper format can fail – PDF export output file naming – Five beginner mistakes... Read more →

Revit 2022 Released

Revit 2022 has been released – Revit 2022 SDK coming soon – What's new – Enhancements – Bimsmith take – Microservices and serverless architecture – Questioning the standard model theory... Read more →

Model Group and DA4R Language in Forge

Today, let's look at two Japanese Forge questions, on model groups and the Revit engine language, another RevitLookup enhancement, and, while we're talking about languages, a surprising scientific discovery on naked mole-rat dialects – Retrieving Revit model group in Forge – Specifying the Revit UI language in DA4R – RevitLookup supports ScheduleDefinition GetField – Naked mole-rats speak in community dialects – Van Gogh 360... Read more →

Simple IUpdater and other TBC Updates

A nice new minimal DMU example and updates and enhancements to several other important sample applications – Simple dynamic model updater example – ExportCncFab SortMark update – RevitLookup exception on view GetTemplateParameterIds... Read more →

FireRevit, Deprecated API and Elbow Centre Point

Topics for today – Revit 2021 DisplayUnitType – Eliminated TBC samples deprecated API usage – Calculating the elbow centre – FireRevit identifies room location for fire escape routes... Read more →

Inside the Factory – Ask me Anything – Today!

Here is a last-minute heads-up for the first online Inside the Factory live AMA (Ask me Anything) style session today, Thursday, September 10, with Aaron Vorwerk, Senior Technical Marketing Manager, Harlan Brumm, Senior Product Manager of Architecture and Sasha Crotty, Senior Product Manager, Revit Platform & Services... Read more →

Compile and Compare Revit 2021.1 SDK Samples

I document my compilation, adaptation and installation of the Revit SDK samples and the RvtSamples external application loading them all – Compiling the Revit 2021.1 SDK samples – Architecture mismatch warning and RvtSamples.txt – New SDK sample CivilAlignments... Read more →

Revit 2021.1 SDK and What's New

The updated SDK (Software Developer's Kit) for the Revit 2021.1 update release is now available from the Revit developer centre – The Revit 2021.1 SDK – ConnectorType API – Export API – Save As API – API additions – Civil Alignments API – Dimension API – Shared Coordinates API – Reset Shared Coordinates – Clipped state of BasePoint – MEP API – Building and Space Type – Zone additions... Read more →