All Services
Service 06

Existing
Structures

Structural engineering for buildings and elements that are already in place. Modifications, strengthening, vertical additions, and assessment support — PE-led and prepared for permit.

Discuss this Scope
At a Glance
Documentation
Prepared clearly for permit submission
Assessment
Existing condition review & documentation
Modifications
Retrofit, additions & changes
Permit-Ready
Packages built for jurisdiction review

Structural work on buildings
already in the field.

Existing structure work involves engineering for buildings, elements, or systems that are already constructed. The scope may include planned modifications, additions, strengthening, or assessment to support permit applications, renovation projects, or change-of-use conditions.

Structural ModificationsEngineering for planned changes to existing framing, walls, openings, or load paths within a building.
Vertical AdditionsStructural evaluation and design for adding stories or area to an existing building, including load path review.
Retrofit & StrengtheningStructural strengthening for seismic upgrades, increased load capacity, or change-of-use conditions.
Opening & Penetration ReviewStructural assessment and documentation for new openings, beam removals, and floor or wall penetrations.
Renovation SupportStructural calculations and drawings to support permit applications for tenant improvement and renovation scopes.
Assessment & DocumentationStructural review of existing conditions to support permit applications, real estate due diligence, or design coordination.

Working with what's there.

Existing structure work starts with understanding what's already in place. Existing drawings, field measurements, material information, and the intended scope of work are all needed upfront. The more complete that information is, the more efficiently the engineering can proceed.

All calculations and packages are prepared for permit submission, structured clearly for plan review, correction cycles, and approval. Revision cycles re-enter the same structured process without rebuilding from scratch.

Sample Work

Real existing structure scope examples.

Retrofit documentation, structural modification packages, and renovation support deliverables.

Existing Structures sample 1
Sample 1
Existing Structures sample 2
Sample 2
Existing Structures sample 3
Sample 3
Existing Structures sample 4
Sample 4
Existing Structures sample 5
Sample 5
Existing Structures sample 6
Sample 6

The right fit for teams
working with existing buildings.

Existing structure scopes work well within the TruzenWorks workflow when existing drawings and field conditions are reasonably documented. Clear information about the existing structure and intended changes allows engineering to proceed without unnecessary delays.

General Contractors
Structural packages for renovation and modification permits on existing buildings, coordinated with the construction scope.
Architects & Design Teams
Structural engineering support for renovation, tenant improvement, and addition projects where an existing structure is involved.
Property Owners & Developers
Structural assessment and documentation for permit applications, due diligence reviews, or planned changes of use or occupancy.

Working with an existing building?

Share the existing drawings, the intended scope, and any known field conditions. We'll assess fit and respond promptly.

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