As-Built drawings are essential for any remodel or renovation. They capture a building exactly as it exists today, giving architects and contractors the accurate information they need to plan confidently and avoid costly delays. This guide explains what As-Built drawings are, why they matter, and how to choose a provider who delivers the accuracy your project depends on.
What Are As-Built Drawings?
As-Built drawings document a structure in its current form, including every update or modification made since the original plans. They are created through detailed site measurements, often with 3D laser surveying, to ensure accuracy.
These drawings give project teams a reliable understanding of the existing conditions before design begins. They help identify potential conflicts, verify dimensions, and inform decisions during renovations, remodels, maintenance, or expansions.
Why Are As-Built Drawings Important?
Accurate As-Built drawings provide a foundation for smooth project execution. They:
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Support cross-team collaboration by giving every stakeholder the same verified information
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Reduce rework, change orders, and design errors
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Speed up maintenance and repair work
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Enable efficient space planning and upgrades
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Help projects stay on schedule by eliminating surprises during construction
Without accurate As-Built drawings, both repairs and renovations take longer, and the chance of costly mistakes increases.
What Do As-Built Drawings Include?
As-Built drawings reflect the actual state of a building or property, including all dimensions, features, and their locations. This not only makes them essential for design and construction, but they also play a crucial role in maintenance and repair activities.
Typically, the following components are As-Built drawing requirements:
Property Measurements, Dimensions, and Layouts
Exact measurements and locations, such as walls, doors, and windows, are an essential component of As-Built drawings. These measurements – including floor plans, roof plans, interior and exterior elevations, and sections – capture the exact size and orientation of the interiors and exteriors of a property, which is critical for ensuring accuracy.
Inaccurate property measurements can lead to faulty design and construction, resulting in costly rework and delays.
Existing Conditions
Because a key feature of As-Built drawings is accuracy, these documents must be precise and detailed to ensure they accurately represent the property or building as it currently exists. They should capture all architectural elements, structural components, and site features.
MEP Systems
An As-Built drawing should account for the mechanical, electrical, and plumbing (MEP) systems that support a building’s infrastructure. This includes the location of HVAC equipment, ducts, wiring, outlets, panels, piping, and fixtures.
These are critical for understanding a building’s compliance with safety and building codes, as well as for troubleshooting and upgrading as needed.
How To Get As-Built Drawings: Who Creates Them & What To Look For
There are several ways to procure As-Built drawings. Architects, engineers, or contractors may handle them in-house or use an online, self-service tool. Alternatively, you can partner with specialized firms like PPM, which are dedicated to creating precise As-Built drawings with fast turnaround times.
Here is more detail about the most common options:
Do-It-Yourself (DIY)
Creating your own As-Built drawings is an option for smaller projects or teams with limited resources. Basic measurement tools or online software can help streamline the process. It is important to keep in mind that accuracy depends on the tools available and the level of experience of the person capturing the measurements, which means some projects may require additional verification or refinement later in the design phase.
Partnering With a Professional Firm
A professional As-Built provider can support projects that require a higher level of documentation detail or specialized expertise. Although this approach may involve a greater initial investment, it offers predictable workflows and access to advanced tools.
With a professional firm like PPM, you can work with a team that’s refined a comprehensive process through years of experience. PPM’s approach includes:
- 14 Quality Assurance checkpoints
- Experienced surveyors who work efficiently onsite and leverage extensive expertise
- Advanced LiDAR scanning technology that captures millions of data points with high accuracy
This workflow helps ensure that your drawings are delivered accurately and on schedule.
How To Complete As-Built Drawings
When providing As-Built drawings, clients need to be able to trust that the drawings they receive are up to date and accurate, which requires quality control and quality assurance measures. Technology plays a vital role in completing accurate As-Built drawings, due to the precision and accuracy of available tools.
Modern tools allow the capture of precise measurements and details, ensuring plans accurately reflect the actual dimensions and features of a property or building. As a result, technology has made the creation of As-Built drawings faster, more efficient, and more reliable.
2D CAD
One of the tools used in creating As-Built drawings is AutoCAD technology.
AutoCAD is a computer-aided design platform widely used to create precise and detailed drawings. After measurements are collected, AutoCAD helps translate site information into clear, organized plans that support architectural and construction workflows.
3D BIM
Building Information Modeling (BIM) allows users to create intelligent 3D representations of a building. These models support visualization, coordination, and planning across project teams. Features such as clash detection, parametric components, smart geometry tools, and virtual walk-through capabilities can help teams better understand existing conditions before design decisions are made.
PPM uses As-Built surveying technology, such as LiDAR scanners, which capture millions of data points and compile them into a point cloud that forms the foundation of the model. To make sure your models meet the right level of accuracy and detail, we recommend following the Level of Development (LOD) required for your project as defined by the U.S. Institute of Building Documentation.
Types of As-Built Drawings
As-Built drawings are categorized based on their function and location within the construction project. The three types of As-Built drawings in construction are architectural, structural, and MEP.
1. Architectural As-Built Drawings
Architectural As-Built drawings include floor plans, elevations, and sections that show the layout of a building’s interior and exterior.
Here’s a more detailed breakdown of each:
- Floor plans: The overhead view of a structure’s layout, with accurate measurements and details for floors, walls, windows, and doors.
- Exterior elevations: Flat views of all sides of the exterior of a building, showing materials, architectural features, and openings.
- Interior elevations: Straight views of the interior, such as walls, built-ins, finishes, and vertical dimensions.
- Sections: A vertical cut-through view revealing interior construction details, relationships between floors, and heights.
2. Structural As-Built Drawings
Structural As-Built drawings show the layout of a building’s structural components and help ensure that the building is structurally sound and up to code.
These drawings typically include:
- Columns: The vertical supports that carry loads from the building to its foundation
- Beams: Horizontal supports spanning openings and carrying loads from walls, floors, or roofs
- Framing: The system of structural pieces that provide shape and strength to the building
- Foundations: The base of the building, which distributes its weight and anchors it to the ground
- Slabs: Flat, horizontal elements, like floors or ceilings, that are connected to beams and columns
3. MEP As-Built Drawings:
MEP As-Built drawings show the layout of a building’s mechanical, electrical, and plumbing systems. In many cases, architects will need to address immovable MEP or consider what MEP might need to be moved to implement a new design, along with understanding the cost of doing so.
Here is a breakdown of each component:
- Mechanical: HVAC systems like vents, ducts, and equipment layouts
- Electrical: Wiring, lighting, outlets, circuits, and panels that handle power distribution
- Plumbing: Pipes, fixtures, and drainage systems
Feel Confident With Precise As-Built Drawings from PPM
As-Built drawings are a crucial part of construction projects, providing an accurate and complete picture of the current state of a property. Partnering with the right provider for As-Built drawing services can make a major difference in your project’s success.
With PPM, you go through an end-to-end process you can trust from proposal to post-project support and everything in between, including surveying, drafting, quality assurance, and delivery.
PPM offers a Worry-Free Promise, complete with active communication and updates, and the option for rush delivery. Visit PPM and get your quote and learn more.
Frequently Asked Questions
What If As-Built Drawings Are Inaccurate?
If As-Built drawings are not accurate, it can lead to problems and challenges during the design, construction, and maintenance of a project:
- Design issues: Errors in project design, clashes during the design and planning process, and safety risks from flawed design assumptions
- Construction issues: Delays, costs to fix problems discovered mid-construction, and safety issues
- Maintenance issues: Difficulty identifying or resolving underlying issues, resulting in additional time and expense to address the mistakes
Additionally, inaccurate As-Built drawings can result in legal disputes, as the incorrect information in the drawings may lead to project delays, additional costs, or errors that lead to claims for damages.
In some cases, disputes arising from inaccurate As-Built drawings can even result in litigation, which can be costly and time-consuming for all parties involved.
How Much Do As-Built Drawings Cost?
As-Built drawings are priced based on the complexity of the property, the type of plans requested, and the size, shape, and square footage of the property. Pricing also depends on the Level of Accuracy and Level of Development required.
In order for a provider to deliver quality plans that are truly tailored to the client and project, they need to put considerable research and effort into drawing up a comprehensive quote.
Are As-Built Drawings Required by Law?
Whether or not As-Built drawings are required by law depends on the municipality. Determining if this requirement exists, and to what extent, is the responsibility of the architect involved.