Green Remodeling and Renovating

Residential Renovation/Remodel

The ICC 700 National Green Building Standard™ (NGBS) is the only residential green building rating system approved by ANSI, the American National Standards Institute, as an American National Standard. The NGBS provides practices for the design, construction, and certification of new single and multi-family homes and renovations, including:


The NGBS green remodeling certification applies to:

•Single-family homes and townhouses
•Duplexes, quads, and garden apartments
•High- and low-rise apartment buildings
•Residential units in mixed-use buildings

A green remodeled home or multifamily building can be awarded a Bronze, Silver, Gold, or Emerald certification level, depending on improvement in water and energy efficiency and the number of additional green practices incorporated in the project.

For a home or building remodel to be NGBS Green Certified, the following requirements must be met:

1. Achieve significant improvements in energy and water efficiency s
2. Meet applicable mandatory practices
3. Implement sufficient additional green practicess


Small projects certification applies to the most common remodeling projects: kitchens; full bathrooms; basements; and additions under 400 square feet. Small remodeling projects receive a “Certified” designation; there are no certification levels.

For a small remodel project to be NGBS Green Certified, the project must meet a number of specific requirements, which include but are not limited to:

•Material use
•Moisture control
•Building thermal envelope
•Air sealing and insulation

In addition, small remodels must meet specific practices depending on the type of functional area:

•Kitchen remodel criteria—recycling and food waste disposal practices
•Bathroom remodel criteria—focus on water-efficient fixtures and universal design for aging-in-place
•Basement remodel criteria—moisture inspection and radon-control practices
•Criteria for additions—variety of practices related to moisture reduction, ice barrier installation, and radon control

Learn more:

NGBS Green Remodel Overview

Process for Green Remodeling Projects