Liberty Window Group publishes NYC window retrofit guide

Liberty Window Group has released a planning guide for window repair and replacement projects in New York City, aimed at owners, managers, boards and design teams. The guide walks through permit, landmark, Energy Code and occupied-building issues that can shape cost, schedule and compliance before work begins.

Why it matters: - Window work in New York City can trigger multiple review paths, and missing one can delay a project or add cost. - The guide is aimed at building owners, property managers, co-op and condo boards, architects, engineers and facilities teams planning repair or replacement work. - The resource is designed to help teams evaluate compliance issues before a project is priced or scheduled.

What happened: - Liberty Window Group, Inc. released the NYC Window Retrofit and Replacement Planning Guide. - The guide draws on public guidance from the New York City Department of Buildings, the New York City Landmarks Preservation Commission and NYC Accelerator. - The company published the guide on September 30, 2026.

The details: - The guide recommends documenting existing window conditions, including window type, frame material, operation, glazing, hardware, perimeter seals and adjacent façade conditions. - The guide notes that water near a window does not by itself identify the source of the leak. - Sills, lintels, perimeter joints and surrounding masonry may also need review. - DOB guidance identifies limited conditions under which replacing existing windows may be exempt from a work permit. - Other scopes require filing and approval. - When a DOB job filing is required, a New York State-licensed Registered Architect or Professional Engineer must submit it. - LPC requires a permit for work affecting the exterior of an individual landmark or a building in a historic district. - LPC approval is required for window replacement in a designated building, even when a DOB permit may not be needed. - Ordinary maintenance is treated differently under LPC guidance, including replacing broken glass in kind, renewing caulk or replacing broken hardware. - DOB states that façade projects involving new or replacement windows may require an energy analysis under the New York City Energy Conservation Code. - Product requirements and the compliance path depend on the building and the proposed work. - Local Law 97 sets greenhouse-gas emissions limits for many large NYC buildings. - Window or façade work can be part of a broader capital and energy plan, but window replacement alone does not establish Local Law 97 compliance. - NYC Accelerator provides city-supported assistance with building energy upgrades and compliance planning. - For covered permitted work in buildings with occupied dwelling units, DOB requires a Tenant Protection Plan. - The plan covers egress, fire safety, health protections, structural safety, noise and essential services. - Owners must also follow applicable notice and posting requirements. - The guide advises defining unit access, occupant communications, daily sequencing, dust and debris controls, weather protection, temporary security, inspections and punch-list procedures before work starts. - A strong bid package identifies the units and locations involved, the repair or replacement scope, frame and glazing requirements, finishes, hardware, perimeter work, testing, protection, access, phasing, filing responsibilities, warranties and closeout documents. - Proposals should be checked for exclusions before prices are compared.

Between the lines: - The guide positions window replacement as a coordination problem, not just a product purchase. - It also signals that permit, landmark and energy-compliance questions should be resolved early, before procurement or construction sequencing is locked in. - The focus on one written scope suggests the company sees bid clarity as a way to reduce disputes and surprise costs.

What's next: - The guide says owners should obtain project-specific legal, architectural or engineering advice. - It also says the guidance is based on publicly available NYC agency materials current as of September 30, 2026. - Liberty Window Group says its services include consultation, design coordination, supply, installation, repair and maintenance for window, storefront and curtain-wall projects in the New York area. - The company says its markets include commercial and institutional properties, co-ops and condos, and landmark buildings. - The company website includes information about Manhattan window repair and replacement services.