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Subchapter 001: BUILDING ENERGY STANDARDS
§ 51. Residential building energy standards; stretch code
(a) Definitions. In this subchapter, the following definitions apply:
(1) “Builder” means the general contractor or other person in charge of construction,
who has the power to direct others with respect to the details to be observed in construction.
(2) “Residential buildings” means one-family dwellings, two-family dwellings, and multi-family
housing three stories or less in height.
(A) With respect to a structure that is three stories or less in height and is a mixed-use
building that shares residential and commercial users, the term “residential building”
shall include the living spaces in the structure and the nonliving spaces in the structure
that serve only the residential users such as common hallways, laundry facilities,
residential management offices, community rooms, storage rooms, and foyers.
(B) “Residential buildings” shall not include hunting camps.
(3) “Residential construction” means new construction of residential buildings, and the
construction of additions, alterations, renovations, or repairs to an existing residential
building.
(4) “IECC” means the International Energy Conservation Code of the International Code
Council.
(5) “Stretch code” means a building energy code for residential buildings that achieves
greater energy savings than the RBES and is adopted in accordance with subsection
(d) of this section.
(b) Adoption of Residential Building Energy Standards (RBES). Residential construction shall be in compliance with the standards adopted by the
Commissioner of Public Service in accordance with subsection (c) of this section.
(c) Revision and interpretation of energy standards. The Commissioner of Public Service shall amend and update the RBES by means of administrative
rules adopted in accordance with 3 V.S.A. chapter 25. On or before January 1, 2011, the Commissioner shall complete rulemaking to amend
the energy standards to ensure that, to comply with the standards, residential construction
must be designed and constructed in a manner that complies with the 2009 edition of
the IECC. After January 1, 2011, the Commissioner may direct the timely and appropriate
revision of the RBES after the issuance of updated standards for residential construction
under the IECC. The Department of Public Service shall provide technical assistance
and expert advice to the Commissioner in the interpretation of the RBES and in the
formulation of specific proposals for amending the RBES. Prior to final adoption of
each required revision of the RBES, the Department of Public Service shall convene
an Advisory Committee to include one or more mortgage lenders, builders, building
designers, utility representatives, and other persons with experience and expertise,
such as consumer advocates and energy conservation experts. The Advisory Committee
may provide the Commissioner with additional recommendations for revision of the RBES.
(1) Any amendments to the RBES shall be:
(A) consistent with duly adopted State energy policy, as specified in section 202a of this title, and consistent with duly adopted State housing policy;
(B) evaluated relative to their technical applicability and reliability; and
(C) cost-effective and affordable from the consumer’s perspective.
(2) Each time the RBES are amended by the Commissioner, the amended RBES shall become
effective upon a date specified in the adopted rule, a date that shall not be less
than three months after the date of adoption. Persons commencing residential construction
before the effective date of the amended RBES shall have the option of complying with
the applicable provisions of the earlier or the amended RBES. After the effective
date of the original or the amended RBES, any person commencing residential construction
shall comply with the most recent version of the RBES.
(3) In the first cycle of revision of the RBES, the Commissioner shall establish standards
for ventilation and shall consider revisions, including:
(A) a requirement for sealed combustion, induced or forced draft combustion equipment
when exhaust-only ventilation systems are installed; and
(B) a requirement for adequate replacement air ducted directly to the combustion area
of wood and pellet stoves and fireplaces.
(4)(A) As the Model Energy Code is primarily a performance-based code, the Department of
Public Service shall develop and disseminate criteria that builders may use in lieu
of any computer software, calculations and trade-off worksheets, or systems analysis
to comply with the Code. An example package that complies with the Code shall be included
in the rules and updated as appropriate.
(B) To provide for flexibility, additional packages that are equivalent to the example
package under chapter 9 of the Model Energy Code and that satisfy the performance
approach shall be developed by July 1, 1997 and disseminated by the Department of
Public Service. Each time the RBES are amended by the Commissioner, the Department
of Public Service shall develop modified compliance packages that will become available
to the public by the date that the amendment becomes effective.
(5) A home energy rating conducted at the time of construction by a Vermont-accredited
home energy rating organization shall be an acceptable means of demonstrating compliance
if the rating indicates energy performance equivalent to the RBES.
(6) The Advisory Committee convened under this subsection, in preparing for the RBES update
required on or about January 1, 1999, shall advise the Commissioner of Public Service
with respect to the coordination of the RBES amendments with existing and proposed
demand-side management programs offered in the State.
(d) Stretch code. The Commissioner may adopt a stretch code by rule. This stretch code shall meet the
requirements of subdivision (c)(1) of this section. The stretch code shall be available
for adoption by municipalities under 24 V.S.A. chapter 117 and, on final adoption by the Commissioner, shall apply in proceedings under 10 V.S.A. chapter 151 (Act 250) in accordance with subsection (e) of this section.
(e) Role of RBES and stretch code in Act 250. Substantial and reliable evidence of compliance with the RBES and, when adopted, the
stretch code established and updated under this section shall serve as a presumption
of compliance with 10 V.S.A. § 6086(a)(9)(F), except no presumption shall be created insofar as compliance with subdivision (a)(9)(F)
involves the role of electric resistance space heating. In attempting to rebut a presumption
of compliance created under this subsection, a challenge may only focus on the question
of whether or not there will be compliance with the RBES and stretch code established
and updated under this subsection. A presumption under this subsection may not be
overcome by evidence that the RBES and stretch code adopted and updated under this
section fail to comply with 10 V.S.A. § 6086(a)(9)(F).
(f) Certification.
(1) Issuance; recording. A certification may be issued by a builder, a licensed professional engineer, a licensed
architect, or an accredited home energy rating organization. If certification is not
issued by a licensed professional engineer, a licensed architect, or an accredited
home energy rating organization, it shall be issued by the builder. Any certification
shall certify that residential construction meets the RBES. The Department of Public
Service will develop and make available to the public a certificate that lists key
features of the RBES. Any person certifying shall use this certificate or one substantially
like it to certify compliance with the RBES. Certification shall be issued by completing
and signing a certificate and permanently affixing it to the outside of the heating
or cooling equipment, to the electrical service panel located inside the building,
or in a visible location in the vicinity of one of these three areas. The certificate
shall certify that the residential building has been constructed in compliance with
the requirements of the RBES. The person certifying under this subsection shall provide
a copy of each certificate to the Department of Public Service and shall ensure that
a certificate is recorded and indexed in the town land records. A builder may contract
with a licensed professional engineer, a licensed architect, or an accredited home
energy rating organization to issue certification and to indemnify the builder from
any liability to the owner of the residential construction caused by noncompliance
with the RBES.
(2) Condition precedent. Provision of a certificate as required by subdivision (1) of this subsection shall
be a condition precedent to:
(A) issuance by the Commissioner of Public Safety or a municipal official acting under
20 V.S.A. § 2736 of any final occupancy permit required by the rules of the Commissioner of Public
Safety for use or occupancy of residential construction commencing on or after July
1, 2013 that is also a public building as defined in 20 V.S.A. § 2730(a); and
(B) issuance by a municipality of a certificate of occupancy for residential construction
commencing on or after July 1, 2013, if the municipality requires such a certificate
under 24 V.S.A. chapter 117.
(g) Action for damages.
(1) Except as otherwise provided in this subsection, a person aggrieved by noncompliance
with this section may bring a civil action against a person who has the obligation
of certifying compliance under subsection (e) of this section. The person may seek
injunctive relief, damages, court costs, and attorney’s fees. As used in this subdivision,
“damages” means:
(A) costs incidental to increased energy consumption; and
(B) labor, materials, and other expenses associated with bringing the structure into compliance
with RBES in effect on the date construction was commenced.
(2) A person’s failure to affix the certification as required by this section shall not
be an affirmative defense in such an action against the person.
(3) The rights and remedies created by this section shall not be construed to limit any
rights and remedies otherwise provided by law.
(h) Applicability and exemptions. The construction of a residential addition to a building shall not create a requirement
that the entire building comply with this subchapter. The following residential construction
shall not be subject to the requirements of this subchapter:
(1) Buildings or additions whose peak energy use design rate for all purposes is less
than 3.4 BTUs per hour, per square foot, or less than one watt per square foot of
floor area.
(2) Homes subject to Title VI of the National Manufactured Housing Construction and Safety
Standards Act of 1974 (42 U.S.C. §§ 5401-5426).
(3) Buildings or additions that are neither heated nor cooled.
(4) Residential construction by an owner, if all of the following apply:
(A) The owner of the residential construction is the builder, as defined under this section.
(B) The residential construction is used as a dwelling by the owner.
(C) The owner in fact directs the details of construction with regard to the installation
of materials not in compliance with RBES.
(D) The owner discloses in writing to a prospective buyer, before entering into a binding
purchase and sales agreement, with respect to the nature and extent of any noncompliance
with RBES. Any statement or certificate given to a prospective buyer shall itemize
how the home does not comply with RBES and shall itemize which measures do not meet
the RBES standards in effect at the time construction commenced. Any certificate given
under this subsection (h) shall be recorded in the land records where the property
is located and sent to the Department of Public Service within 30 days following sale
of the property by the owner.
(i) Title validity not affected. A defect in marketable title shall not be created by a failure to issue certification
or a certificate, as required under subsection (f) or subdivision (h)(4) of this section,
or by a failure under that subsection to affix a certificate; to provide a copy of
a certificate to the Department of Public Service; or to record and index a certificate
in the town records. (Added 1997, No. 20, § 1; amended 2005, No. 208 (Adj. Sess.), § 7; 2007, No. 92 (Adj. Sess.), § 8; 2009, No. 45, § 11, eff. May 27, 2009; 2009, No. 159 (Adj. Sess.), § 18b, eff. June 4, 2010; 2011, No. 47, § 20t, eff. May 25, 2011; 2013, No. 89, §§ 6, 11; 2017, No. 74, § 121; 2023, No. 85 (Adj. Sess.), § 349, eff. July 1, 2024; 2023, No. 151 (Adj. Sess.), § 3, eff. June 3, 2024.)
§ 52. Home energy rating organization accreditation
(a) The Department of Public Service shall carry out an accreditation process for home
energy rating organizations, in consultation with representatives of interested parties,
including builders, building designers, mortgage lenders, real estate licensees, home
appraisers, utilities, nonutility fuel suppliers, the Vermont Housing Finance Agency,
and contractors who provide home energy rating services. As part of the accreditation
process, the Department of Public Service shall consider any national home energy
rating system guidelines and shall determine whether each provider of home energy
ratings in the State of Vermont complies with the accreditation criteria adopted pursuant
to this section.
(b) Once the Department of Public Service carries out an accreditation process pursuant
to subsection (a) of this section, no organization may provide home energy rating
services in the State unless the organization has been accredited by the Department.
(c) The Department shall consult with the organizations described in subsection (a) of
this section to facilitate a public information program to inform homeowners, renters,
sellers, and others regarding the accreditation process and of the statewide home
energy rating organizations accredited by the Department. (Added 1997, No. 20, § 1; recodified 2013, No. 89, § 11.)
§ 53. Commercial building energy standards
(a) Definitions. In this subchapter, “commercial buildings” means all buildings that are not residential
buildings as defined in subdivision 51(a)(2) of this title or farm structures as defined in 24 V.S.A. § 4413.
(1) The following commercial buildings, or portions of those buildings, separated from
the remainder of the building by thermal envelope assemblies complying with this section
shall be exempt from the building thermal envelope provisions of the standards:
(A) those that do not contain conditioned space; and
(B) those with a peak design rate of energy usage less than an amount specified in the
commercial building energy standards (CBES) adopted under subsection (b) of this section.
(2) These standards shall not apply to equipment or portions of building energy systems
that use energy primarily to provide for industrial or manufacturing processes.
(3) With respect to a structure that is a mixed-use building that shares residential and
commercial users:
(A) if the structure is three stories or fewer in height, the term “commercial building”
shall include all commercial uses within the structure and all common areas and facilities
that serve both residential and commercial uses; and
(B) if the structure is four stories or more in height, the term “commercial building”
shall include all uses and areas within the structure.
(b) Adoption of commercial building energy standards. Commercial building construction with respect to which any local building permit application
or application for construction plan approval by the Commissioner of Public Safety
pursuant to 20 V.S.A. chapter 173 has been submitted on or after January 1, 2007 shall be designed and constructed
in substantial compliance with the standards contained in the 2005 Vermont Guidelines
for Energy Efficient Commercial Construction, as those standards may be amended by
administrative rule adopted by the Commissioner of Public Service.
(c) Revision and interpretation of energy standards. On or before January 1, 2011, the Commissioner shall complete rulemaking to amend
the commercial building energy standards to ensure that commercial building construction
must be designed and constructed in a manner that complies with ANSI/ASHRAE/IESNA
standard 90.1-2007 or the 2009 edition of the IECC, whichever provides the greatest
level of energy savings. The Commissioner of Public Service shall amend and update
the CBES by means of administrative rules adopted in accordance with 3 V.S.A. chapter 25. The Commissioner may direct the timely and appropriate revision of the CBES after
the issuance of updated standards for commercial construction under the IECC or ASHRAE/ANSI/IESNA
standard 90.1, whichever provides the greatest level of energy savings. Prior to final
adoption of each required revision of the CBES, the Department of Public Service shall
convene an Advisory Committee to include one or more mortgage lenders; builders; building
designers; architects; civil, mechanical, and electrical engineers; utility representatives;
and other persons with experience and expertise, such as consumer advocates and energy
conservation experts. The Advisory Committee may provide the Commissioner of Public
Service with additional recommendations for revision of the CBES.
(1) Any amendments to the CBES shall be:
(A) consistent with duly adopted State energy policy, as specified in 30 V.S.A. § 202a; and
(B) evaluated relative to their technical applicability and reliability.
(2) Each time the CBES are amended by the Commissioner of Public Service, the amended
CBES shall become effective upon a date specified in the adopted rule, a date that
shall not be less than three months after the date of adoption. Persons submitting
an application for any local permit authorizing commercial construction, or an application
for construction plan approval by the Commissioner of Public Safety pursuant to 20 V.S.A. chapter 173, before the effective date of the amended CBES shall have the option of complying
with the applicable provisions of the earlier or the amended CBES. After the effective
date of the original or the amended CBES, any person submitting such an application
for commercial construction in an area subject to the CBES shall comply with the most
recent version of the CBES.
(3) The Advisory Committee convened under this subsection, in preparing for the CBES updates,
shall advise the Department of Public Service with respect to the coordination of
the CBES amendments with existing and proposed demand-side management programs offered
in the State.
(4) The Commissioner of Public Service is authorized to adopt rules interpreting and implementing
the CBES.
(5) The Commissioner of Public Service may grant written variances or exemptions from
the CBES or rules adopted under this section where strict compliance would entail
practical difficulty or unnecessary hardship, or is otherwise found unwarranted, provided
that:
(A) Any such variance or exemption shall be consistent with State energy policy, as specified
in section 202a of this title.
(B) Any petitioner for such a variance or exemption can demonstrate that the methods,
means, or practices proposed to be taken in lieu of compliance with the rule or rules
provide, in the opinion of the Commissioner, equal energy efficiency to that attained
by compliance with the rule or rules.
(C) A copy of any such variance or exemption shall be recorded by the petitioner in the
land records of the city or town in which the building is located.
(D) A record of each variance or exemption shall be maintained by the Commissioner, together
with the certifications received by the Commissioner.
(d) Certification requirement.
(1) The design of commercial buildings shall be certified by the primary designer as compliant
with CBES in accordance with this subsection, except as compliance is excused by a
variance or exemption issued under subdivision (c)(5) of this section. If applicable
law requires that the primary designer be a licensed professional engineer, licensed
architect, or other licensed professional, a member of a pertinent licensed profession
shall issue this certification. If one or more licensed professional engineers or
licensed architects is involved in the design of the project, one of these licensees
shall issue this certificate. If a licensed professional engineer or a licensed architect
is not involved in designing the project, certification shall be issued by the builder.
Any certification shall be accompanied by an affidavit and shall certify that the
designer acted in accordance with the designer’s professional duty of care in designing
the building, and that the commercial building was designed in substantial compliance
with the requirements of the CBES. The Department of Public Service will develop and
make available to the public a certificate that lists key requirements of the CBES,
sets forth certifying language in accordance with this subdivision, and requires disclosure
of persons relied upon by the primary designer who have contracted to indemnify the
primary designer for damages arising out of that reliance. Any person certifying under
this subdivision shall use this certificate or one substantially like it to satisfy
these certification obligations. Certification shall be issued by completing and signing
a certificate and permanently affixing it to the outside of the heating or cooling
equipment, to the electrical service panel located inside the building, or in a visible
location in the vicinity of one of these three areas. In certifying under this subsection,
the certifying person may reasonably rely on one or more supporting affidavits received
from other persons that contributed to the design affirming that the portions of the
design produced by them were properly certifiable under this subsection. The certifying
person may contract for indemnification from those on which the person relies pursuant
to this subdivision (1) against damages arising out of that reliance. This indemnification
shall not limit any rights of action of an aggrieved party.
(2) The construction of a commercial building shall be certified as compliant with CBES
in accordance with this subsection, except as compliance is excused by a variance
or exemption issued under subdivision (c)(5) of this section. This certification shall
be issued by the general contractor, construction manager, or other party having primary
responsibility for coordinating the construction of the subject building, or in the
absence of such a person, by the owner of the building. Any certification shall be
accompanied by an affidavit and shall certify that the subject commercial building
was constructed in accordance with the ordinary standard of care applicable to the
participating construction trades, and that the subject commercial building was constructed
substantially in accordance with the construction documents including the plans and
specifications certified under subdivision (1) of this subsection for that building.
The Department of Public Service will develop and make available to the public a certificate
that sets forth certifying language in accordance with this subdivision, and that
requires disclosure of persons who have been relied upon by the person with primary
responsibility for coordinating the construction of the building and who have contracted
to indemnify that person for damages arising out of that reliance. The person certifying
under this subdivision shall use that certificate or one substantially like it to
satisfy these certification obligations. Certification shall be issued by completing
and signing a certificate and permanently affixing it to the outside of the heating
or cooling equipment, to the electrical service panel located inside the building,
or in a visible location in the vicinity of one of these three areas. In certifying
under this subdivision, the certifying person may reasonably rely on one or more supporting
affidavits received from subcontractors or others engaged in the construction of the
subject commercial building affirming that the portions of the building constructed
by them were properly certifiable under this subdivision (2). The certifying person
may contract for indemnification from those on which the person relies pursuant to
this subdivision (2) against damages arising out of that reliance. This indemnification
shall not limit any rights of action of an aggrieved party.
(3) Any person certifying under this subsection shall provide a copy of the person’s certificate
and any accompanying affidavit to the Department of Public Service.
(4) Provision of a certificate as required by subdivision (1) of this subsection and of
a certificate as required by subdivision (2) of this subsection shall be conditions
precedent to:
(A) issuance by the Commissioner of Public Safety (or a municipal official acting under
20 V.S.A. § 2736) of any final occupancy permit required by the rules of the Commissioner of Public
Safety for use or occupancy of a commercial building that is also a public building
as defined in 20 V.S.A. § 2730(a); and
(B) issuance by a municipality of a certificate of occupancy for commercial construction
commencing on or after July 1, 2013, if the municipality requires such a certificate
under 24 V.S.A. chapter 117.
(e) Private right of action for damages against a certifier.
(1) Except as otherwise provided in this subsection, a person aggrieved by another person’s
breach of that other person’s representations contained in a certification or supporting
affidavit issued or received as provided under subsection (d) of this section, within
10 years after the earlier of completion of construction or occupancy of the affected
commercial building or portion of that building, may bring a civil action in Superior
Court against a person who has an obligation of certifying compliance under subsection
(d) of this section alleging breach of the representations contained in that person’s
certification. The person may seek injunctive relief, damages arising from the aggrieved
party’s reliance on the accuracy of those representations, court costs, and reasonable
attorney’s fees in an amount to be determined by the court. As used in this subdivision,
“damages” includes costs incidental to increased energy consumption.
(2) A person’s failure to affix the certification as required by this section shall not
be an affirmative defense in such an action against the person.
(3) The rights and remedies created by this section shall not be construed to limit any
rights and remedies otherwise provided by law.
(4) The right of action established in this subsection may not be waived by contract or
other agreement.
(5) It shall be a defense to an action under this subsection that either at the time of
completion or at any time thereafter, the commercial building or portion of building
covered by a certificate under subsection (d) of this section, as actually constructed,
met or exceeded the overall performance standards established in the CBES in effect
on the date construction was commenced.
(f) State or local enforcement. Any person who knowingly makes a false certification under subsection (d) of this
section, or any party who fails to certify under subsection (d) of this section when
required to do so, shall be subject to a civil penalty of not more than $250.00 per
day, up to $10,000.00 for each year the violation continues.
(g) Title validity not affected. A defect in marketable title shall not be created by a failure to record a variance
or exemption pursuant to subdivision (c)(5) of this section, by a failure to issue
certification or a certificate, as required under subsection (d) of this section,
or by a failure under that subsection to affix a certificate or provide a copy of
a certificate to the Department of Public Service. (Added 2005, No. 208 (Adj. Sess.), § 8; amended 2007, No. 92 (Adj. Sess.), § 9; 2009, No. 45, § 12, eff. May 27, 2009; 2011, No. 47, § 20u, eff. May 25, 2011; 2013, No. 89, §§ 7, 11; 2015, No. 23, § 150; 2017, No. 74, § 122; 2023, No. 85 (Adj. Sess.), § 350, eff. July 1, 2024; 2023, No. 151 (Adj. Sess.), § 4, eff. June 3, 2024.)
§ 54. Compliance plan
The Commissioner of Public Service:
(1) Shall issue a plan for achieving compliance with the energy standards adopted under
this subchapter no later than February 1, 2017 in at least 90 percent of new and renovated
residential and commercial building space. In preparing this plan, the Department
shall review enforcement mechanisms for building energy codes that have been adopted
in other jurisdictions and shall solicit the comments and recommendations of one or
more mortgage lenders; builders; building designers; architects; civil, mechanical,
and electrical engineers; utility representatives; environmental organizations; consumer
advocates; energy efficiency experts; the Attorney General; and other persons who
are potentially affected or have relevant expertise.
(2) May:
(A) Establish active training and enforcement programs to meet the energy standards adopted
under this subchapter.
(B) Establish a system for measuring the rate of compliance each year with the energy
standards adopted under this chapter. If such a system is established, the Commissioner
also shall provide for such annual measurement.
(C) Adopt administrative rules pursuant to 3 V.S.A. chapter 25 to implement this subdivision
(2). To the extent the implementation of this subdivision (2) places obligations on
persons outside the Department of Public Service, such obligations shall be by means
of administrative rules. (Added 2009, No. 45, § 13, eff. May 27, 2009; amended 2013, No. 89, §§ 8, 11.)
§ 55. Priority housing projects; stretch code
A priority housing project as defined in 10 V.S.A. § 6001 shall meet or exceed the stretch codes established under this subchapter by the Department
of Public Service. (Added 2017, No. 69, § H.6, eff. June 28, 2017.)