Rockville staff present proposed Article 14 green building amendments: third‑party verification, stronger solar and EV requirements proposed

Rockville staff on June 2 asked the Mayor and Council whether to move forward with proposed updates to Article 14 of the City Code that would adopt the 2021 International Green Construction Code (IGCC) and the 2020 National Green Building Standard (NGBS) with local amendments.

A CPDS presenter told the council staff recommends requiring third‑party green verification for all new structures and aligning local code with national green codes. The IGCC changes staff highlighted include deletion of chapters redundant with existing city rules and new or strengthened provisions around on‑site solar installations and EV charging infrastructure. Staff said the city’s Energy Conservation Code amendments adopted last year already include solar‑ready and electrification‑ready requirements and are in some cases more stringent than the standard green code; the proposed Article 14 changes would build on that work.

For single‑family and low‑rise residential, staff recommended limited amendments to the National Green Building Standard and suggested preserving NGBS scoring while referencing applicable city code to avoid conflicts. Staff recommended a six‑month implementation period to allow projects currently in the pipeline to adjust. The presentation asked the council whether it supported moving forward to draft final language, soliciting stakeholder feedback and submitting the amendments for adoption; staff said they would bring the draft to the Environment Commission for review.

Council members asked for additional detail on third‑party verification timelines, possible impacts on projects already financed, and lessons learned from the city’s April 2024 energy‑code adoption. Several council members expressed support for the concept but asked staff to return with specifics on verification timelines, permitting capacity and coordination with neighboring jurisdictions.