Last updated on: June 19, 2026
Shop drawings are where construction stops being theoretical and starts becoming buildable. A design drawing may define the intent, but the shop drawing explains the exact component, product, assembly, connection, dimension, and installation approach needed to execute that intent on site.
SFor contractors, fabricators, BIM teams, engineers, architects, and owners, these drawings are more than a submittal requirement. They are a control point.
SIn this article, we will break down what shop drawings are, what they include, who creates them, how they are used across construction disciplines, and how they differ from construction drawings, design drawings, and as-built drawings.
What Are Shop Drawings in Construction?
Shop drawings in construction are detailed technical drawings that explain how a specific building element, system, or assembly will be manufactured, fabricated, coordinated, or installed.
They are usually developed after the design and construction documents are issued and before the related work begins on site or in a fabrication shop. On many projects, shop drawings are also part of the formal submittal process and may be required by the contract documents, specifications, scope of work, or submittal register.
A good shop drawing answers practical construction questions such as:
- What exact item, system, or assembly is being installed?
- What are the final dimensions?
- What materials, products, or equipment will be used?
- How will the item be fabricated or assembled?
- How will it connect to other building elements?
- What clearances are required?
- What field measurements must be verified?
- How does it coordinate with architectural, structural, MEP, fire protection, AV, or specialty systems?
- Are there any deviations from the contract documents?
- What does the installer, technician, or fabricator need to build it correctly?
For example, an architectural drawing may show the general location, size, and design intent of a custom reception desk. The millwork shop drawing will show actual field dimensions, panel layout, joinery, backing, hardware, countertop details, material finish, mounting method, and installation requirements.
Importance of shop drawings in construction
Shop drawings are important because construction drawings do not always explain every fabrication detail, installation method, trade interface, or field condition.
Designers and engineers define the intent, performance requirements, code requirements, and overall construction direction. Contractors and specialty trades then develop shop drawings to show the exact way their part of the work will be executed.
Shop drawings help project teams:
- Reduce rework before materials are ordered or fabricated
- Confirm product and material selections
- Coordinate systems across disciplines
- Support fabrication and prefabrication
- Identify clashes before installation
- Clarify field installation requirements
- Reduce ambiguity between design and construction teams
- Improve communication between contractors, architects, engineers, owners, and specialty trades
- Create a documented review trail before fabrication or installation begins
What Do Shop Drawings Include?
Shop drawings include the technical information needed to fabricate, assemble, coordinate, or install a specific building component or system.
The exact content depends on the trade, project specifications, scope of work, and contract requirements. However, most shop drawings include the following information.
- Project and Drawing Information
- Plans, Elevations, Sections, and Details
- Dimensions and Levels
- Materials and Product Information
- Fabrication and Assembly Details
- Coordination Details
- Installation Notes and Field Instructions
Multi-Residential Housing BIM & Shop Drawings
United BIM delivered Structural BIM modeling, architectural modeling, Revit family creation, shop drawings, and BOQ support for a multi-residential housing project. The work helped convert project information into coordinated, construction-ready documentation for better planning and execution.
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Who Creates Shop Drawings?
Shop drawings are typically created by the party responsible for performing, fabricating, supplying, or installing a specific part of the work.
The responsible party depends on the contract, scope of work, project delivery method, and construction discipline.
| Party | Role in Shop Drawings |
|---|---|
| General contractor | Manages the submittal process and coordinates trade inputs |
| Subcontractor | Prepares or oversees trade-specific shop drawings |
| Fabricator | Creates detailed drawings for manufactured or fabricated components |
| Supplier/manufacturer | Provides product-specific drawings, equipment details, and installation data |
| BIM/VDC team | Develops model-based, coordinated shop drawings |
| Engineer | Reviews discipline-specific technical alignment |
| Owner/developer | May review key systems for operational, aesthetic, or maintenance requirements |
Architects and engineers usually do not create shop drawings unless specifically contracted to do so. Their role is typically to review submitted shop drawings for general conformance with the design intent and project requirements.
The contractor remains responsible for means, methods, sequencing, coordination, fabrication, and installation unless the contract states otherwise.
On design-build projects, the responsibility may be less clear if the scope is not well defined. That is why the specifications, SOW, BIM execution plan (BEP), and contract documents should clearly define what shop drawings are required and who must provide them.
Uses of Shop Drawings in Construction
Shop drawings are used to move a project from design intent to actual execution. They help teams review, coordinate, fabricate, procure, install, and inspect work before it reaches the field.
Key uses include:
- Submittal review: Architects, engineers, GCs, and owners review shop drawings to check alignment with the design intent, specifications, and contract documents.
- Fabrication: Fabricators use them to produce steel, rebar, ductwork, pipe spools, curtain walls, millwork, AV racks, and other project-specific components.
- Installation: Field teams rely on shop drawings for layout, routing, mounting, connections, clearances, and installation sequence.
- Trade coordination: Shop drawings help identify clashes between structure, MEP, fire protection, AV, ceilings, and finishes before work starts.
- Quality control: Supervisors and inspectors use reviewed shop drawings to verify dimensions, materials, products, connections, and installation details.
Shop Drawings by Construction Discipline
Shop drawings vary by trade because each discipline has different fabrication, coordination, and installation needs. A shop drawings can have the following drawings:
- Architectural Shop Drawings
- Structural Shop Drawings
- MEP Shop Drawings
- Mechanical Shop Drawings
- Electrical Shop Drawings
- Plumbing Shop Drawings
- Fire Protection Shop Drawings
- Millwork and Casework Shop Drawings
- Façade and Curtain Wall Shop Drawings
- AV Shop Drawings
Shop Drawing vs Other Types of Drawings
Different drawing types serve different purposes. Confusing them can lead to poor coordination, review delays, wrong expectations, and construction disputes.
Shop drawings are often confused with construction drawings, design drawings, and as-built drawings. The easiest way to understand the difference is by looking at when each drawing is created and what question it answers.
Shop Drawings vs Construction Drawings
Construction drawings are prepared by architects and engineers. They show the design intent, specifications, systems, layouts, and details required for bidding, permitting, and construction.
Shop drawings are prepared by contractors, subcontractors, fabricators, or suppliers after reviewing the construction drawings. They show how a specific component, system, or assembly will actually be fabricated, coordinated, and installed.
Shop Drawings vs As-Built Drawings
Shop drawings are created before fabrication or installation. They show the planned work and help teams coordinate, review, fabricate, and install components correctly.
As-built drawings are created during closeout or after construction. They show what was actually installed, including field changes, reroutes, revisions, and final site conditions.
Read our blog to know about the difference between Shop Drawings & As built drawings.
Shop Drawings vs Design Drawings
Design drawings communicate the architect’s or engineer’s concept, layout, and design direction. They may show the look, function, and overall intent, but not every fabrication or installation detail.
Shop drawings convert that intent into exact trade-level information, including dimensions, materials, products, connections, assemblies, and installation details.
Comparison Table: Shop Drawings vs Construction Drawings vs Design Drawings vs As-Built Drawings
| Drawing Type | Main Purpose | Created By | Used When | Key Deliverables | Benefits | Limitations | Cost and Timeline Impact | Primary Users |
|---|---|---|---|---|---|---|---|---|
| Design Drawings | Communicate design concept, intent, and general direction | Architect and engineers | Early design and design development | Plans, elevations, sections, concepts, layouts | Helps stakeholders understand the proposed design | May not include full fabrication or installation details | Influences early budgeting and design decisions | Owners, architects, engineers, developers |
| Construction Drawings | Define what must be built as part of the project documents | Architect and engineers | Bidding, permitting, and construction | Detailed plans, specifications, schedules, and details | Provides formal construction direction | May not show exact trade-specific fabrication methods | Drives pricing, permitting, procurement, and construction planning | Contractors, owners, architects, engineers |
| Shop Drawings | Show how a specific component, assembly, or system will be fabricated and installed | Contractors, subcontractors, fabricators, suppliers, BIM teams | Before fabrication, procurement, and installation | Trade-specific plans, details, dimensions, schedules, coordination drawings | Improves buildability, coordination, review, and field clarity | Does not replace contract documents unless formally accepted as a change | Can reduce rework, but delayed submittals can affect the schedule | Contractors, fabricators, installers, reviewers |
| As-Built Drawings | Record what was actually built on site | Contractors, subcontractors, BIM/as-built teams | During closeout or after construction | Updated drawings showing final installed conditions | Supports facility management, maintenance, renovations, and future upgrades | Accuracy depends on field updates and documentation; may miss hidden or undocumented changes | Adds closeout documentation time, but helps reduce future maintenance, renovation, and investigation costs | Owners, facility managers, maintenance teams, architects, engineers, and future contractors |
Turn Design Intent Into Build-Ready Shop Drawings
United BIM helps contractors, fabricators, architects, engineers, and owners create accurate, coordinated shop drawings backed by BIM expertise and construction documentation experience.
How to Review Shop Drawings: QA/QC Checklist for GCs and Contractors
Knowing how to review shop drawings can stop problems before they reach the field. This is where missing dimensions, unclear details, wrong products, and coordination gaps should be caught.
A good shop drawing review is not a quick stamp-and-forward task. It is a deliberate QA/QC check before procurement, fabrication, or installation starts.
1. Check the Title, Revision, and References
Start with the basics. Confirm the project name, drawing title, sheet number, revision number, issue date, specification section, and related drawing references.
Old revisions create real problems. If the shop drawing is based on outdated drawings, RFIs, bulletins, or addenda, send it back before it moves further.
2. Match It With the Design and Specifications
Cross-check the shop drawing against the contract drawings and specifications. Look at dimensions, elevations, materials, finishes, product models, performance requirements, fire ratings, acoustic ratings, and installation notes.
If something does not match the design intent or project requirements, flag it clearly.
3. Review Fabrication and Assembly Details
For fabricated items, check the practical details: joints, welds, bolts, fasteners, plates, supports, bends, tolerances, finishes, and connection points.
A sketch without clear fabrication information is not enough. The fabricator or installer should be able to understand what is being built without filling in the gaps themselves.
4. Check Trade Coordination
Review the drawing against other trades and building systems. Look for conflicts with structure, MEP, fire protection, AV, ceilings, lighting, access panels, equipment, and architectural finishes.
Use overlays or BIM clash checks where possible. One missed clash in a ceiling, shaft, corridor, or equipment room can delay the entire installation.
5. Confirm Field Verification Requirements
Check whether critical dimensions have been field verified. This is especially important for renovation, millwork, façade, structural steel, fit-out, and existing-condition work.
CheckIf a drawing says “verify in field,” confirm what must be verified, who is responsible, and whether verification is required before fabrication.
6. Check Codes, Standards, and Approvals
Review the drawing for applicable codes, accessibility requirements, project standards, manufacturer requirements, and referenced industry standards.
Also confirm whether the shop drawing needs a licensed engineer’s stamp, delegated design review, calculations, manufacturer certification, or authority approval.
7. Identify Deviations and RFI Triggers
Any deviation from the contract documents should be clearly marked. This includes changes to size, routing, product selection, material, connection, finish, support, or installation method.
If anything is unclear, raise an RFI early. A short question during review is better than a long delay during installation.
8. Make Review Comments Clear
Comments should be specific, actionable, and traceable. Avoid vague notes like “revise” or “coordinate.” State exactly what needs to be corrected and reference the drawing, detail, specification, or RFI where possible.
Common review outcomes may include approved, approved as noted, revise and resubmit, rejected, or reviewed for general conformance.
9. Understand What Approval Means
A review stamp usually confirms general conformance with the design intent and project requirements. It does not remove the contractor’s responsibility for dimensions, coordination, means and methods, sequencing, fabrication, or installation.
Be precise about what is being accepted and what still needs attention.
10. Track Revisions Before Release
Before the drawing is released for procurement, fabrication, or installation, confirm that all comments are addressed. Check the revision number, revision date, clouded changes, updated references, and resubmittal notes.
The field team, fabrication shop, and project team should all be working from the same current version.
Winding Up
Shop drawings are one of the most important communication tools in construction. They show how specific building components, systems, and assemblies will be fabricated, coordinated, and installed.
If your project requires accurate, coordinated, and construction-ready shop drawings, United BIM can support your team with BIM-driven documentation and coordination services.
Get to know more about our Shop Drawing Services here.
FAQs
Shop drawings are detailed, project-specific drawings that show how a specific building component, assembly, or system will be fabricated, coordinated, and installed. They are usually prepared by contractors, subcontractors, fabricators, suppliers, manufacturers, or BIM teams.
Shop drawings are typically created by contractors, subcontractors, fabricators, suppliers, manufacturers, or BIM/VDC teams. Architects and engineers usually review them for design intent, but they do not usually prepare them unless specifically contracted to do so.
Shop drawings may include plans, elevations, sections, dimensions, materials, product details, fabrication information, connection details, equipment layouts, installation notes, coordination details, schedules, and revision information.
No. Construction drawings show what needs to be built and are usually prepared by architects and engineers. Shop drawings show how a specific part of the work will be built, fabricated, coordinated, or installed by the contractor or trade team.
Shop drawings are prepared before fabrication or installation to show the intended work. As-built drawings are prepared after construction to show what was actually built, including field changes and final installed conditions.
Shop drawings are often required by the contract documents, specifications, scope of work, or submittal register. However, they usually do not replace the contract documents unless a formal change, approval, or contract provision says otherwise.
Some shop drawings require a licensed engineer’s stamp, especially when they involve delegated design, structural supports, anchorage, life safety, or code-driven systems. Not all shop drawings require a stamp. The requirement depends on the specifications, project scope, and local authority requirements.
Shop drawings are important because they reduce ambiguity, improve coordination, support fabrication, guide installation, reduce rework, and help project teams identify issues before they reach the field.
Shop drawings are made by reviewing the latest construction drawings, specifications, RFIs, addenda, scope of work, and trade requirements. The team then drafts or models the details, coordinates them with other disciplines, checks them internally, and submits them for review.
Shop drawings are commonly created using tools such as AutoCAD, Revit, Navisworks, Tekla Structures, SolidWorks, Fabrication CADmep, and other CAD/BIM platforms. The software depends on the trade, project requirements, and level of coordination needed.
About the Author
Coordination Manager / VDC Manager at United BIM
With over 10 years of experience in the AEC industry, Akash Patel is a seasoned Coordination Manager and VDC Manager at United BIM. His expertise lies in managing complex MEP-FP coordination projects and leveraging cutting-edge BIM technology to ensure seamless collaboration and precision. Akash is dedicated to delivering high-quality, detailed models that meet the demands of modern construction. He is passionate about optimizing workflows and driving innovation within the BIM field.
