Every plan is a git repo.
Who This Matters To (And Why)
Critical: Architect,Developer,GC. These parties make or lose money directly based on this thesis.
Important: Engineer,Banker,Investor. These parties execute decisions shaped by this thesis.
Context: City,Inspector,Interior Design. These parties need to understand it to avoid friction.
Highest typology impact: Multifamily,Office,Industrial,Mixed Use. Lower impact: Hotel,Retail.
Every building is a git repo. Every design iteration is a commit. Every VE meeting is a merge conflict.
How It Shapes Development
Every plan is a git repository because a building design has all the properties that make version control valuable: it changes over time, multiple contributors work on it simultaneously, previous versions must be recoverable when current directions prove wrong, and the history of changes carries information about why decisions were made. A git repository tracks all of this automatically. A building design project tracks none of it automatically. The history of design decisions lives in email threads, meeting minutes, and individual designers' memories — all of which are lossy, non-searchable, and not linked to the design artifacts they describe.
Branching in git allows parallel development of alternatives without disrupting the main line of work. A design team exploring two structural system options could maintain two branches: one with steel moment frames, one with concrete shear walls. Each branch receives updates independently. When the structural decision is made, the selected branch is merged into the main design. The rejected branch is archived but recoverable if the decision is reversed. In current practice, design alternatives are tracked through separate file versions — “Building_v3_steel_option.rvt” — in a folder structure that is non-searchable, non-diffable, and abandoned the moment the decision is made.
Commit messages are the change log. A git commit message says what changed and why: “Moved stair core 4 feet north to clear column line.” A building design change without a commit message is a change without a reason. When the stair core is moved back south three weeks later because someone forgot the reason it was moved north, the rework is the cost of not maintaining a change log. Projects with rigorous change documentation spend less time re-debating settled decisions and more time making new ones. The commit message discipline in software development is pure productivity improvement applicable to any design process.
Git blame identifies who made each change and when. In a building design project, the equivalent capability would allow any member of the team to query: who made this decision, when did they make it, and what was the stated reason? This capability would change how design decisions are made and documented. Decisions made verbally in a meeting with no documentation are unmaintainable. Decisions documented in a model change with a linked reason are auditable. The accountability that git blame creates in software development is exactly what is missing in building design workflows, and its absence is a significant source of the “who decided that?” confusion that costs design teams weeks on every complex project.