What Are Architectural Plans?
Architectural plans are the technical drawings that define how a building is designed, constructed, and assembled. For commercial construction — whether it’s a restaurant build-out, retail tenant improvement, or ground-up development — architectural plans are the foundation of your permit application and the blueprint your contractor uses to build.
Every building department in the United States requires architectural plans (as part of a complete set of construction documents) before issuing a building permit. The level of detail, number of sheets, and specific requirements vary by jurisdiction — which is why experienced permit expediters review plans before submittal to catch issues that cause costly resubmittals.
Types of Architectural Plans
1. Site Plan
Shows the building footprint on the property, including setbacks, parking, landscaping, utilities, and access points. Required for every commercial permit application. Typically prepared at 1/8″ = 1′-0″ or 1″ = 20′ scale.
2. Floor Plans
The most common architectural drawing — a top-down view of each floor showing walls, doors, windows, fixtures, and room layouts. Floor plans include dimensions, room labels, and references to detail drawings. Commercial floor plans must show ADA-compliant paths of travel, restroom configurations, and occupancy calculations.
3. Elevations
Exterior views of each side of the building showing materials, finishes, heights, and architectural features. Building departments use elevations to verify the building meets height restrictions, setback requirements, and design standards (especially in historic districts or planned developments).
4. Building Sections
Cross-section “slices” through the building showing the relationship between floors, roof structure, foundation, and wall assemblies. Critical for structural review and verifying compliance with fire-resistance ratings and energy code requirements.
5. Reflected Ceiling Plans (RCP)
Show the ceiling layout from above, including light fixtures, sprinkler heads, HVAC diffusers, ceiling heights, and ceiling materials. Essential for commercial spaces that must meet specific lighting, fire suppression, and accessibility standards.
6. Detail Drawings
Enlarged views of specific construction conditions — wall assemblies, window installations, waterproofing details, and structural connections. These details are where code compliance issues are most commonly found during plan review.
Need Help with Architectural Plans & Permit Review?
PermitPlace has managed permits in 2,000+ jurisdictions across 23 states for over 20 years. We handle the entire process — from application to Certificate of Occupancy.
What Building Departments Look for in Architectural Plans
After reviewing plans for over 30,000 permit projects since 2003, PermitPlace has identified the most common issues that cause plan review comments and delays:
- Missing or incorrect occupancy classification — See our building occupancy types guide
- ADA non-compliance — Restroom clearances, path of travel widths, door hardware height
- Insufficient fire-resistance ratings — Especially at tenant separation walls and corridor walls
- Energy code violations — Insulation values, glazing ratios, lighting power density
- Missing engineer stamps — Structural, MEP, and fire protection sheets must be sealed by licensed engineers
- Incomplete code analysis — Building departments want to see occupancy type, construction type, allowable area calculations, and exits analysis on the title sheet
Architectural Plans for Tenant Improvements (TI)
Most commercial permit expediting projects are tenant improvements — fitting out an existing retail, restaurant, or office space for a new tenant. TI architectural plans are typically simpler than ground-up projects but still require:
- Demolition plan (what’s being removed from the existing space)
- New construction floor plan
- Reflected ceiling plan
- Finish schedule
- MEP plans (mechanical, electrical, plumbing)
- ADA compliance documentation
- Code analysis including change of use determination (see nonconforming use guide)
Check how long plan review takes in your city using our Permit Speed Index covering 669 U.S. cities.
Frequently Asked Questions
What are architectural plans?
Architectural plans are detailed technical drawings that show the design, layout, dimensions, and specifications of a building or structure. They include floor plans, elevations, sections, and details that builders and building departments use to construct and review a project. For commercial construction, architectural plans must be prepared by a licensed architect and stamped (sealed) before submittal to the building department.
What is included in a set of architectural plans?
A complete set of commercial architectural plans typically includes: a title sheet with project information, site plan showing the building on the property, floor plans for each level, exterior elevations (all four sides), building sections and wall sections, reflected ceiling plans, door and window schedules, finish schedules, accessibility (ADA) details, and structural, mechanical, electrical, and plumbing sheets from the respective engineers.
How much do architectural plans cost for commercial projects?
Commercial architectural plan costs vary widely. Tenant improvement (TI) plans for retail or restaurant spaces typically run $3,000-$15,000. Ground-up commercial buildings range from $15,000-$100,000+ depending on size and complexity. Architect fees are usually 5-15% of construction cost. Plans must comply with local building codes, which is where a permit expediter can save time and resubmittal costs.
What is the difference between architectural plans and construction documents?
Architectural plans refer specifically to the drawings showing the building design. Construction documents (CDs) are the complete package — architectural plans plus structural, mechanical, electrical, plumbing, fire protection, and civil engineering drawings, along with written specifications. Building departments require construction documents (not just architectural plans) for permit review.
Do I need an architect for a commercial building permit?
In most states, yes. Commercial construction projects require plans prepared and sealed by a licensed architect or engineer. Some states allow unlicensed design for small projects under certain square footage thresholds. Your local building department or a permit expediter can confirm the requirements for your specific jurisdiction and project type.