As-Built Plans are the revised and final set of drawings that accurately reflect the actual condition of a building as it was constructed. They are an official record of the finished structure, including any changes, modifications, or deviations made from the original design plans during the construction process.
The correct term is the hyphenated “As-Built”.
As-Built Plans vs. Original (Design) Plans
It’s crucial to understand the difference between the initial design plans and the final as-built plans.
- Original (Design) Plans: These are the blueprints created by the architect and engineer before construction begins. They represent the intention—what is planned to be built. These are the plans submitted to the LGU to get a Building Permit.
- As-Built Plans: These are the revised drawings created after construction is complete. They represent the reality—what was actually built.
During any construction project, minor on-site adjustments are common. A pipe may need to be rerouted around an unexpected obstruction, or a window might be slightly repositioned. As-Built Plans document all these changes, providing a precise and truthful map of the finished home.
What Do As-Built Drawings Include?
As-built drawings are a comprehensive set of documents that mirror the original plan sets, but with updated information. A complete set of as-built plans includes:
- Final Dimensions and Locations: The exact, measured locations of walls, doors, windows, and other structural elements.
- Updated Electrical and Plumbing Layouts: The precise routes and final locations of hidden conduits, electrical wiring, water pipes, and drainage lines.
- Material Changes: Notes on any materials that were substituted during construction (e.g., a different brand of tile or type of fixture was used).
- Site Changes: Any modifications to the property’s grading, drainage, or final position on the lot.
Essentially, they are the final, accurate “user manual” for your house, showing exactly where everything is.
Who Prepares and Provides As-Built Plans?
The creation of as-built plans is a collaborative effort.
- Who prepares the as-built plan? The process starts with the contractor on the construction site. As changes are made, they are responsible for marking them up on a working set of drawings (often called “red-line drawings”). After construction, these markups are then used to create the final, clean set of drawings, which are officially prepared and signed by the Architect or Engineer of Record.
- Who provides as-built plans? For a new home, the developer or contractor is responsible for providing the homeowner with a copy of the as-built plans, usually during the property turnover or as part of the requirements for closing the transaction.
A Local Perspective in the Philippines
In the Philippines, As-Built Plans are not just a good idea; they are a legal requirement. They are a crucial document needed to secure an Occupancy Permit from your local Office of the Building Official (OBO).
When the OBO inspector conducts the final inspection of a new house, they use the as-built plans to verify that the completed structure, including any on-site changes, is still compliant with the National Building Code and is safe for habitation. Here in Malolos, Bulacan, at 9:21 AM on a Tuesday, September 23, 2025, any new house being inspected for an Occupancy Permit must have a complete set of signed as-built plans ready for the city inspector.
Practical Tip from an Expert
When you receive the keys to your new home at turnover, make sure a complete set of signed As-Built Plans is included in the document package. Keep these plans in a safe and dry place. They are incredibly valuable for any future renovation. If you want to drill into a wall to hang a heavy shelf or break through a floor to move a toilet, the as-built plans will show you the exact location of hidden pipes and electrical lines, potentially saving you from a costly and dangerous accident.
Real-World Example
The Garcia family, who now lives in their new home in Malolos, decides they want to install a new split-type air conditioner. Before the installer drills a hole through the exterior wall, Mr. Garcia consults his As-Built Plans. The electrical plan shows a major conduit carrying wires is embedded exactly where they planned to drill. Using the plan’s measurements, they are able to choose a new, safe location for the hole, avoiding a dangerous and expensive mistake.
Related Terms
- Building Permit: The permit to start construction based on the original plans.
- Occupancy Permit: The permit to legally inhabit the house, which requires the submission of as-built plans.
- Renovation: Future home improvement projects where as-built plans are invaluable.
- Specifications (Specs): The list of materials, which should be reflected in the as-built plans.
- Architect/Engineer of Record: The professionals who sign and take responsibility for the final as-built plans.
Internal Links:
- Building Permit: Link to the article defining a Building Permit.
Frequently Asked Questions (FAQ)
What is the meaning of an as-built plan?
An as-built plan is a revised set of technical drawings that shows the final, actual condition of a building as it was constructed, including all on-site changes made from the original design.
What is the difference between an as-built plan and an original plan?
The original plan is the intended design before construction. The as-built plan is the actual result after construction, documenting all real-world modifications.
Who prepares and provides as-built plans?
The contractor typically records the on-site changes, and the Architect or Engineer of Record prepares the final drawings. The developer or contractor is then responsible for providing these plans to the homeowner.
Which is correct: as-built or as build?
The correct professional and grammatical term is the hyphenated “as-built.”
