A single-family house: from drawings to a BIM base
A house may have a modest floor area while still containing complex relationships between the site, entrances, stairs and roof. Preparing a BIM base therefore requires a coherent drawing set rather than a plan alone. The brief should explain the design stage and the architectural information the practice needs for its next task.
Assemble a coordinated drawing set
Include current floor plans, the sections needed to explain levels and roof geometry, and elevations that define opening relationships. Identify the main dimensional reference and state the units. If the ground slopes or entrances meet different levels, show those relationships explicitly. Confirm whether external areas, retaining elements or neighboring context are included in the assignment. A site drawing can provide useful background, but its presence does not automatically expand the modeling scope to every feature shown on it.
Resolve the unusual conditions early
Mark split levels, double-height spaces, sloping ceilings and other conditions that may not be obvious from plan symbols. Provide the intended stair arrangement and floor relationships. State which wall thicknesses and opening sizes are confirmed, and which component choices remain provisional. For an existing house, distinguish verified measurements from information taken from older drawings. Record questions around the junctions between different parts of the building instead of letting each drawing be interpreted independently and inconsistently.
Choose a practical first review
Review a section through the most connected area, then compare the main floor plans with the model. Check that the roof, stair and major openings match the intended relationships. Confirm the element names and file structure support continued architectural work. If engineering or specialist information has not yet been supplied, identify those boundaries and the future coordination steps. The architectural model does not automatically establish structural adequacy, building-services design or compliance with the requirements governing the project.
A house-model brief check
- Select sections that explain the site's level relationships, stair and roof rather than assuming the floor plans describe the entire building sufficiently.
- Mark double-height spaces, sloping ceilings and external areas included in the assignment, identifying which dimensions and component choices are still awaiting confirmation.
- Review a connected section before minor details so the practice can confirm the building's main architectural relationships while corrections remain straightforward to coordinate.
Agree the delivery format, any Revit version requirement and a concise list of acceptance checks. Keep the current drawings and decision register with the returned files. A well-prepared house model gives the practice an organized base for further work because the source hierarchy and assumptions are clear, not because every component has been modeled to the greatest possible detail.
General guidance: each project's scope is confirmed before commissioning.