Foundation & Addition Engineering Across Massachusetts
Foundation, Dormer & Addition Engineering

Structural Engineering for Foundations, Dormers, Additions & Sunrooms

Whether you're stabilizing a settling foundation or adding a second story, dormer, sunroom, or finished basement, Lebra Engineering & Design delivers PE-stamped, permit-ready structural drawings across Massachusetts.

Foundation Repair Design Dormers & Second Stories Sunrooms & Additions Basement Finishing

Get Your Free Project Review

Tell us about your foundation, addition, or dormer project.

No obligation. We respond within 1 business day.

πŸŽ“ PE-Stamped Structural Designs
🧱 Foundation Repair Specialists
πŸ“‘ 3D Scan-Verified Existing Conditions
⏱️ 2–3 Week Design Turnaround
What We Design

Structural Solutions for Every Project Type

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Foundation Repair & Underpinning

  • Crack stabilization & wall replacement design
  • Underpinning for settlement issues
  • Waterproofing & drainage coordination
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Home Additions

  • Single & multi-story addition framing
  • New foundation design & tie-ins
  • Load path & header calculations
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Dormers & Second Stories

  • Roof & ridge structural modification
  • Existing foundation load evaluation
  • Egress & ceiling height compliance
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Sunrooms & Three-Season Rooms

  • Foundation & framing design
  • Snow & wind load calculations
  • Cost-effective, code-compliant options
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Basement Finishing

  • Egress window & header design
  • Structural modifications for open floor plans
  • Moisture & waterproofing considerations
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Retaining Walls & Site Structures

  • Retaining wall & grading design
  • Drainage & stormwater coordination
  • Pool & landscape structure support
Our Process

From Existing Conditions to Permit-Ready Plans

1

Free Consultation

We discuss your goals, budget, and existing structure.

2

Site Visit / 3D Scan

We assess existing conditions and structural capacity.

3

Structural Design

PE-stamped drawings covering foundation, framing, and loads.

4

Permitting Support

We prepare code-compliant, permit-ready documents for your town.

5

Construction Support

We remain available for RFIs and field questions during the build.

Case Studies

Recent Foundation & Addition Projects

Foundation underpinning construction with new concrete piers beneath an existing stone foundation
Foundation Repair

Foundation Underpinning β€” Littleton, MA

Structural repair design stabilizing a settling fieldstone foundation for a 19th-century farmhouse.

Completed shed dormer and second-story addition
Dormer Addition

Shed Dormer & Second Story β€” Acton, MA

Full structural redesign of roof framing and foundation reinforcement for an added second story.

Completed rear family room addition
Home Addition

Rear Family Room Addition β€” Methuen, MA

New foundation and framing design tying a 400 sq. ft. addition into the existing home structure.

Why Homeowners & Contractors Choose Lebra

Built to Last, Designed to Permit

Fewer Field Surprises

3D scanning confirms existing conditions before we finalize design.

Faster Permit Approval

Local MA code knowledge means fewer plan review rejections.

Cost-Conscious Design

We look for structurally sound, budget-friendly alternatives.

Contractor-Friendly Plans

Clear, buildable drawings your GC can execute with confidence.

Foundation & Addition FAQ

Frequently Asked Questions

Do I need an engineer for a foundation repair?
In most Massachusetts towns, structural foundation repairs (underpinning, wall replacement, crack stabilization) require an engineer-stamped repair design as part of the building permit application.
Do dormers and additions require structural engineering?
Yes. Adding a dormer, second story, or addition changes the load path of your home, requiring engineered framing, header, and foundation calculations stamped by a licensed engineer for permit approval.
Can my existing foundation support a second-story addition?
It depends on the existing foundation's condition, size, and soil bearing capacity. We evaluate this directly, often using 3D scanning, before finalizing your addition design.
How much does structural design for an addition cost?
Costs vary with project scope and complexity. We provide a free, no-obligation quote after reviewing your goals and existing conditions.
Can you design a basement finish that includes a bedroom or living space?
Yes. We design egress windows, ceiling height compliance, and structural modifications needed to finish a basement as habitable living space under the Massachusetts building code.
Start Your Project

Get a Free Foundation or Addition Project Review

We'll review your goals and existing structure, and outline the fastest path to permit-ready plans.

πŸ“ž (781) 540-0337  |  βœ‰οΈ contact@lebraengineering.com

πŸ“ž Call Now Get Free Quote