Structural Alteration Specialists

Structural Alterations With Engineering Precision & Full DOB Permitting

Load-bearing wall removals, building additions, floor openings, and structural modifications — done right with PE-stamped plans, proper permits, and experienced crews. Asif Contracting has been altering NYC buildings for for 25+ years.

25+ Years
Serving NYC
500+
Projects Done
4.9/5
Google Rating
Licensed
NYC & Nassau
DOB
Approved
1,000+
Happy Clients

Structural Alteration Services for NYC Buildings

Structural work is the foundation of any major renovation. Whether you are opening up a floor plan, adding square footage, or converting a building, we bring the engineering expertise and construction skill to do it safely and legally.

Load-Bearing Wall Removals

Opening up floor plans by removing load-bearing walls is one of the most requested alterations in NYC. We install steel beams, LVL headers, or post-and-beam systems to safely transfer loads. Every removal includes PE-stamped structural drawings and DOB-approved plans.

Building Additions & Extensions

Rear extensions, side additions, second-story additions, and dormer installations that add usable square footage to your property. We handle zoning analysis, FAR calculations, structural engineering, and full DOB permit filing.

Floor Openings & Stair Installations

Creating floor openings for new staircases, dumbwaiters, or multi-level connections requires careful structural engineering. We cut and reinforce floor joists and install new structural framing to support the opening safely.

Building Use Conversions

Converting a building from one use to another — commercial to residential, single-family to multi-family, or cellar to habitable space — requires DOB alteration permits, updated certificates of occupancy, and often significant structural work. We manage the full process.

Structural Reinforcement

Strengthening foundations, reinforcing floor systems, adding structural steel, and repairing deteriorated structural elements. Essential for aging NYC buildings that need to support modern loads or meet current code requirements.

Facade Alterations

New window openings, door relocations, facade modifications, and storefront installations. Exterior alterations often require both DOB approval and, in historic districts, Landmarks Preservation Commission review.

What's Included in Every Structural Alteration

Structural work demands precision at every step. Here is exactly what you get when you hire Asif Contracting for your alteration project.

On-site structural assessment
Professional Engineer (PE) structural analysis
PE-stamped structural drawings
DOB alteration permit filing (Type I or Type II)
Expediter coordination and plan examination
Temporary shoring and load management during work
Structural steel fabrication and installation
Concrete and masonry work as required
DOB inspection scheduling and coordination
Post-alteration structural sign-off
Letter of completion from PE
All debris removal and site cleanup

Why NYC Property Owners Trust Us With Structural Work

Structural alterations are the highest-stakes work in construction. A mistake can compromise building safety, trigger DOB violations, or create liability issues. We eliminate that risk.

  • In-house relationship with experienced NYC structural engineers
  • PE-stamped drawings included with every structural project
  • Full DOB alteration permit filing and management
  • Experienced crews trained in shoring and temporary support
  • Steel fabrication coordination with certified welders
  • Co-op and condo board package preparation
  • Post-alteration sign-off and letter of completion
Structural Alteration Photo

Structural Alteration FAQs for NYC Properties

Common questions about load-bearing wall removals, building additions, and DOB alteration permits in New York City.

In NYC, a Type I alteration (Alt-1) involves a change in use, egress, or occupancy of a building — for example, converting a commercial space to residential or changing from a two-family to a three-family home. A Type II alteration (Alt-2) covers work that does not change the use or egress but involves structural modifications, such as load-bearing wall removals or building additions. Type II is the most common permit type for residential structural work. Type III (Alt-3) covers minor work like cosmetic renovations. We determine the correct filing type during our initial assessment.

Need Structural Work in NYC?

Get a free structural assessment and estimate. We will evaluate your project, outline the engineering requirements, and provide transparent pricing.

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