3D MEP BIM coordination model showing integrated mechanical systems and structural framing for a commercial building

Revit Family Creation Services

Custom Revit Family Creation Services for architectural, structural, MEP, and manufacturer-specific BIM components with high accuracy and parametric functionality.

Parametric Revit family creation breakdown showing 3D BIM object dimensions, parameter properties table, family type variations, and multi-category BIM component libraries BIM service

About This Service

Revit Family Creation Services

Every Revit model depends on its families. Doors, windows, structural connections, MEP equipment, furniture, fixtures, custom architectural components if the family is poorly built, the problems show up in schedules that don't report correctly, views that look wrong, and parameters that break when someone changes a type. At Eminent BIM Services, Revit family creation is a dedicated service. We build families from scratch, modify existing ones, convert manufacturer data into usable Revit content, and develop family libraries for firms and product manufacturers who need consistent, reusable BIM content across projects.

The work covers all disciplines architectural, structural, MEP, furniture, generic models and handles everything from simple fixed-geometry components to fully parametric families with nested geometry, shared parameters, type catalogues, and connector data.

What Is Revit Family Creation?

In Revit, a family is a reusable component that carries geometry, parameters, and behaviour. When you place a window in a wall, load a pump into an MEP model, or tag a structural column, you are using a family. The quality of that family determines how much you can do with it later whether it schedules properly, how it behaves across different sizes, whether it clips correctly in plan and section, and whether it holds up when the design changes.

Revit families fall into a few categories. Loadable families (the most common type) are built in separate .rfa files and loaded into projects as needed think light fixtures, doors, equipment, furniture. System families are built into Revit itself walls, floors, roofs, pipe types and configured within the project rather than loaded. In-place families are modelled directly inside a project for one-off geometry that doesn't repeat.

Most Revit Family Creation Services work sits in the loadable category, where the scope ranges from a single fixture for one project to a full library of hundreds of components for a manufacturer or a firm's BIM standard.


Our Revit Family Creation Scope


Parametric Family Creation

We build families with parameters that control geometry width, height, depth, offset, angle, radius so a single family file covers multiple sizes and configurations. Type catalogues handle large ranges cleanly, letting users select the exact specification from a list rather than managing dozens of separate files.

Custom Architectural Families

Doors, windows, curtain wall panels, railings, stairs, custom furniture, casework, cladding panels, ceiling features, decorative elements. We work from architect's sketches, CAD details, shop drawings, or reference photographs, and model to the level of detail the project requires.

Structural Families

Columns, beams, connections, base plates, anchor bolts, bespoke structural sections, precast elements. Families are built to work with Revit's structural analysis and documentation tools, with the correct category, parameters, and connector placement.

MEP Families - Mechanical, Electrical, Plumbing

HVAC equipment, air terminals, diffusers, grilles, VAV boxes, fan coil units, pumps, heat exchangers, panels, switchgear, light fittings, sockets, fire alarm devices, sprinkler heads, sanitary ware, drainage fittings. MEP families carry the connector data Revit needs for systems to calculate correctly — flow direction, connector type, size, system classification.

Manufacturer and Product Families

We create BIM content for manufacturers who want their products available as Revit families for specifiers and designers. This includes building geometry to the right LOD, adding the product parameters that matter (catalogue references, finishes, performance data), and structuring type catalogues to reflect the actual product range.

Family Modification and Optimisation

Existing families that are slow to load, behave unexpectedly in certain views, or break when a parameter changes can usually be fixed without rebuilding from scratch. We review the family structure, identify what is causing the problem, and revise the geometry, parameter relationships, or nesting to resolve it.

Family Conversion

We convert geometry from other formats - AutoCAD blocks, SketchUp models, manufacturer 3D files, STEP/IGES geometry - into proper Revit families with parameters and correct category settings.

Revit Family Library Creation

For firms building or refreshing their BIM content library, we can develop families in bulk to a consistent standard: naming conventions, shared parameters, type catalogues, thumbnail images, and file organisation to match your BIM Execution Plan.


What We Deliver

The standard deliverable is a Revit family file (.rfa), ready to load into your project. Depending on the scope, delivery includes:

  • Loadable Revit families (.rfa), built in the specified Revit version
  • Type catalogues (.txt) where the family covers a range of sizes or specifications
  • Shared parameter files (.txt) if your firm uses a standard parameter set
  • Family documentation notes - parameter list, intended use, known constraints
  • Preview images for family browser identification
  • Organised folder structure if a library is being built
Files are delivered via shared folder, FTP, or Autodesk Construction Cloud, depending on what the project team is using. We can also load families directly into your project file and verify they behave correctly in context.

Our Workflow

  1. Briefing and reference collection: We receive the manufacturer's product data, your CAD details, drawings, specifications, or whatever reference material is available. If reference material is limited, we clarify what matters exact geometry, approximate geometry, critical parameters before starting.
  2. Scope agreement: For larger libraries, we agree on categories, naming conventions, shared parameters, LOD, and Revit version before any modelling begins. For single families, this step is brief.
  3. Family template selection: Each family is started in the correct Revit template- door, window, mechanical equipment, generic model, structural framing, and so on. Using the wrong template is one of the most common causes of families that misbehave in projects.
  4. Geometry build: Reference planes are set up first, then geometry is constrained to them. Parameters are added and tested as geometry is built, not after. Nested families are used where components repeat or where visibility controls are needed.
  5. Parameter setup and type creation: Parameters are named to match your standard or the shared parameter file. Types are created to cover the required size or specification range. Type catalogues are built where the list is long.
  6. Testing: Each family is loaded into a test project and checked- placed in a wall or floor if it's a hosted family, tagged, scheduled, checked in plan, section, elevation, 3D, and coarse/medium/fine detail levels.
  7. Client review: Families are sent for your review. Revision notes come back and we update.
  8. Final delivery: Clean files delivered in the agreed folder structure with any documentation requested.


Level of Development (LOD) for Revit Families


LOD in the context of Revit families refers to how much geometric and parameter detail the family carries. The right level depends on how the family will be used in the project.

LOD 200 families carry approximate geometry enough to show the component in a coordination model, check spatial clearances, and represent the design intent. A ceiling-mounted unit at LOD 200 has the right footprint and height but not panel details or fixing points.

LOD 300 families are geometrically accurate and sized correctly. They schedule, tag, and document reliably. Most architectural and MEP families used in construction documentation sit at this level.

LOD 350 adds interfaces with adjacent elements supports, clearances, connections to other systems. MEP families at this level carry connector data and clearance geometry so coordination works properly.

LOD 400 is fabrication detail exact geometry for manufacturing, including fixing holes, precise connection geometry, full component breakdown. Shop drawing families and manufacturer content for complex products sit here.

We work across all these levels. For most projects, LOD 300 to 350 covers what is needed. LOD 400 work is scoped separately, as it takes longer per component and requires more detailed manufacturer input.

Software We Use

  • Autodesk Revit - all family creation, testing, and type catalogue development
  • AutoCAD - reading reference DWG files and converting 2D details to 3D family geometry
  • Dynamo - where batch parameter population or repetitive type creation benefits from automation across a large library

Why Clients Use This Service

Poorly built families cause problems in every phase of a project. Geometry that doesn't flex with parameter changes creates manual workarounds. Families in the wrong category don't appear in the right schedules. Hosted families that won't load into a floor or ceiling hold up model setup. Families without connector data break the MEP system calculations.

Getting families right at the start reduces friction throughout the project. Schedules populate correctly. Plans and sections clip as expected at every detail level. The model can be handed over to a contractor or FM team without having to explain why certain components don't behave as expected.

For manufacturers, well-built BIM content in the hands of specifiers and project teams keeps the product visible during design and helps it reach the construction stage specified.

Projects We Support

Our Revit Family Creation Services support a wide range of building types. Commercial office developments frequently need custom furniture and fitout families aligned to the interior design package. Hospitals and healthcare buildings require MEP equipment families with the right connector data and clearance geometry for clinical environments. Hotels and hospitality projects often involve bespoke architectural features joinery, decorative panels, custom light fittings that need to be modelled as families rather than in-place geometry. Industrial and data centre projects need accurate mechanical and electrical equipment families for coordination. Educational and residential projects benefit from standardised library content that speeds up drawing production across multiple buildings or units.

Why Work With Eminent BIM Services?

We understand that a Revit family is not just geometry. It is a piece of infrastructure that gets placed hundreds of times, tagged, scheduled, shared between team members, and handed over at project end. We build families to work properly in a live project environment, not just to look right in a rendered image.

Our team works to client naming standards, shared parameter files, and BIM Execution Plan requirements. If you are building a library from scratch, we can help you define the standard before we start building to it. If you are inheriting a library that has problems, we can audit it and fix what is causing issues.

We support international projects and are familiar with BIM standards across the UK, Australia, the Middle East and North America. Files are delivered in the Revit version you specify, and we can manage version compatibility where older project environments are in use.

Get in Touch

If you have a product to model, a library to build, a family that needs fixing, or a project that needs custom Revit content, send us the reference material and tell us what you need. Our team can review the scope, ask any questions that will help us get it right, and discuss timelines with you.
Software Used
Autodesk Revit AutoCAD BIM 360
FAQ
We create Architectural, Structural, MEP, HVAC, Furniture, Equipment, Lighting, Plumbing Fixtures, Doors, Windows, Casework, and Manufacturer-Specific Revit Families.
For a product family, manufacturer data sheets, 3D files (STEP, IGES, DWG), or dimensioned drawings are the most useful starting point. For bespoke architectural families, CAD details or sketches with key dimensions work well. The more complete the reference material, the faster and more accurate the build. We will flag what is missing before starting rather than making assumptions.
We work in Revit 2020 through to the current release. Specify the version you need and we will deliver in that version. If a project team is on different versions, we can discuss the options.
Yes. Send us your shared parameter file and naming conventions and we will map parameters to it. If you don't have a shared parameter file yet, we can help you build one as part of a library project.
A loadable family is a separate .rfa file that is loaded into any project and placed as many times as needed. An in-place family is modelled directly inside one project file for geometry that won't repeat. For most content - furniture, equipment, fixtures- loadable families are the right approach. In-place families are normally used only for unique one-off geometry in a specific model.
Yes. We can rebuild geometry from SketchUp, 3DS, STEP, IGES, or CAD files into a proper Revit family with parameters and correct category. Direct import of foreign formats into a family file is possible but rarely produces clean results rebuilding in the family editor is usually better.
Yes. We handle library projects covering product ranges of any size. We agree the scope, naming convention, type catalogue structure, and LOD upfront, then work through the range systematically. Families can be structured so that one file covers an entire size range using a type catalogue, which reduces the number of files the specifier has to manage.
Yes. Mechanical, plumbing, electrical, and fire protection families are built with the correct connectors type, size, flow direction, system classification so that Revit's systems tools work correctly when the family is placed.
Yes. Send us the .rfa file and describe what the problem is. Common issues include parameters that don't drive geometry correctly, visibility settings that show unwanted geometry at certain detail levels, and nested families that lose their position when a host changes. Most problems can be diagnosed and fixed without rebuilding the family from scratch.
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