Facade Technical Design, LLC

Katheryn Sudaria Bajo, REWO®, BECx

With over a decade of experience operating across New York City’s most demanding regulatory and construction environments, the practice is engaged where precision matters—high-value developments, institutional portfolios, façade compliance mandates, and technically complex building envelope systems.

Katheryn Sudaria Bajo brings a rare combination of architectural training, field expertise, and construction management, allowing her to operate seamlessly between design intent, construction execution, and compliance enforcement. As a Registered Exterior Wall Observer (REWO®) with deep experience in Building Enclosure Commissioning (BECx), her work focuses on protecting asset value, mitigating risk, and ensuring long-term performance of building systems.

Services

Building Enclosure Consulting (BECx)

Strategic advisory for high-performance building envelopes from early design through construction.

  • Independent design and constructability review

  • Specification authorship and technical detailing

  • Submittal and shop drawing evaluation

  • Field verification, testing oversight, and commissioning

  • Performance-based documentation for ownership and compliance

Façade Inspection & Regulatory Compliance (FISP / Local Law 11)

Comprehensive façade evaluation and compliance strategy aligned with NYC DOB requirements.

  • Exterior wall inspections and condition assessments

  • FISP reporting and filing coordination

  • TR-6 documentation and sign-off support

  • Repair scope development and prioritization

  • Long-term compliance planning for building portfolios

Construction Phase Oversight (QA/QC)

Independent oversight to ensure alignment between design intent, contract documents, and field execution.

  • On-site inspections and detailed reporting

  • Submittal, RFI, and change order review

  • Identification and resolution of non-conforming work

  • Coordination between contractor, architect, and ownership

  • Closeout, warranty, and turnover evaluation

Forensic Investigation & Expert Analysis

Technical investigation of building envelope failures, with discretion and rigor appropriate for legal and high-stakes environments.

  • Water intrusion and façade failure diagnostics

  • Root cause analysis and technical reporting

  • Remediation strategy and repair detailing

  • Expert documentation for disputes and litigation

Regulatory Strategy & DOB Advisory

Navigation of complex regulatory pathways with a focus on clarity, compliance, and efficiency.

  • DOB filing strategy and coordination

  • Local Law 11 / FISP advisory

  • Code analysis and documentation review

  • Agency coordination and approval facilitation

Value Engineering & Performance Optimization

Refined evaluation of systems to balance cost, constructability, and long-term performance.

  • Alternative system and material analysis

  • Lifecycle performance considerations

  • Constructability and sequencing strategy

Selected Work

The practice draws from experience across a portfolio of institutional, commercial, residential, and infrastructure projects, including:

HEALTHCARE

Columbia University Medical Center (Manhattan) · Montefiore Medical Center (Bronx) · University of Miami Sylvester Comprehensive Cancer Center

MUNICIPAL

NYC School Construction Authority (90+ schools) · NYC Department of Design & Construction · U.S. Army Corps of Engineers (West Point, Natick) · Massachusetts School Building Authority · Logan International Airport · Weymouth Tufts Library · Coleytown Elementary School

Academic & Cultural Institutions

Cornell University · Dartmouth College · SUNY Oswego · Western Michigan University · David Rockefeller Arts Center (Tarrytown) · Turkish Embassy (New York)

Commercial & Mixed-Use

Sendero Verde (Passive House, Manhattan) · 150 East 91st Street (Manhattan) · 2226 Third Avenue (Manhattan) · 27-01 Jackson Avenue (LIC) · 11 Ocean Parkway (Brooklyn) · Brooklyn Navy Yard · 1 Java Street (Brooklyn) · Hoxton Hotel (Brooklyn) · 10 Nevins (Brooklyn) · 432 East 14th Street (Manhattan) · Beach Green II Passive House (Far Rockaway) · 42-12 28th Street (Long Island City) · 909 Atlantic Avenue (Brooklyn) · 350 Clarkson (Brooklyn)

International Work

Research Center for the Imperial City Exhibition — Hanoi, Vietnam

ENVELOPE SYSTEM EXPERTISE

  • Curtain Wall and Storefront Systems

  • Roofing and Waterproofing Assemblies

  • Masonry, Terra Cotta, and Precast Systems

  • Window and Punched Opening Systems

  • Foundation and Below-Grade Waterproofing

  • Envelope Interfaces and Architectural Transitions

Approach

Facade Technical Design is engaged where technical clarity and discretion are essential.

The work is grounded in:

  • Risk Intelligence — identifying vulnerabilities before they become liabilities

  • Technical Authority — delivering clear, defensible, and precise documentation

  • Strategic Coordination — aligning design teams, contractors, and ownership

  • Regulatory Mastery — navigating NYC’s most complex compliance frameworks

  • Long-Term Thinking — prioritizing durability, performance, and asset value

Credentials

  • Registered Exterior Wall Observer (REWO®), IIBEC

  • Building Enclosure Commissioning (BECx) Experience

  • Bachelor of Architecture (B.Arch), NAAB Accredited — Full Tuition Scholarship

  • Passive House Tradesperson (CPHT)

  • OSHA 30 / OSHA 10

  • CDT (Construction Document Technology)