(1)
Ļ¯ೇಷ ªಾಜÍ ಪĦÎೆ
GOVERNMENT OF KARNATAKA
No. UDD/138/MYAP/2023 Karnataka Government Secretariat
Vikasa soudha,
Dr. B. R. Ambedkar Veedhi,
Bangalore, Dated: 21.02.2026
NOTIFICATION – II
The draft of the following Bye-Laws further to amend the Karnataka
Municipalities Model Building Bye-Laws, 2017 which the Government of
Karnataka proposes to make in exercise of the powers conferred by sub-
section (1) of section 325 of the Karnataka Municipalities Act, 1964
(Karnataka Act 22 of 1964) was published in the State Gazette Vide
Notification No.UDD/138/MYAP/2023 in Part 4A of the Karnataka Gazette
inviting objections and suggestions from all persons likely to be affected
thereby within thirty days from the date of its publications in the Official
Gazette.
And whereas the said Gazette was made available to public on 25th
April 2025 and whereas no objections and suggestions have been received.
Now therefore, in exercise of powers conferred under Sub-section (1) of
Section 325 of the Karnataka Municipalities Act, 1964 (Karnataka Act 22 of
1964) the State Government notifies the following Bye-Laws namely.
MODEL BUILDING BYE-LAWS
1. Title and commencement and applicability:- (1) These bye laws may
be called the Karnataka Municipalities Model Building (Amendment) Bye-
Laws, 2026.
(2) They shall come into force from the date of their final
publication in the official Gazette
¨sÁUÀ – 4ಎ
Part – IVA
, 21
, 2026
, 02
)
BENGALURU, SATURDAY, 21, FEBRUARY, 2026 ( PHALGUNA , 02, SHAKAVARSHA, 1947)
. 170
No. 170
2
2. Amendment of bye-law 15.- In the Karnataka Municipalities Model
Building Bye-Laws, 2017, in bye-law 15,-
(i)
In clause 15.1.2, the following shall be inserted at the end,
namely:-
“15.1.2.A Application of sewage management provisions: (1) The
provisions of sewage management shall be applicable for projects involving
construction of buildings, having built up area > 5000 sqm and to new
building projects and expansion or repair of the old or existing buildings.
(2) The provisions shall not substitute any approval or consent or
permission etc., required to be obtained under any other Act or rules or
regulation or bye-law or notification etc made there under. The project
authority shall continue to be under obligation to obtain approvals or
clearances under any other Act or regulations or statutes of the Central or
State Government or their designated authorities or development authority
or Local authorities or Bodies as applicable to the project, including, in
respect of site location for parameters such as low lying area, natural
drainage and for environment sensitivity i.e, proximity or within the Eco
Sensitive Area, Zonal Master Plan, Wildlife Sanctuary, National Park, Coastal
Regulation Zone area, Biosphere Reserve, Critically Polluted Area, hill area
or disaster prone area.
(3) In case of any inconsistency with any other rules, regulations, bye-
laws, etc., the provisions that are more stringent shall apply.
(4) Management of sewage or waste water, re-use and recycle of treated
waste water by dual plumbing system shall be as under,-
a. Dual Plumbing System shall be implemented, where one shall be used
for supplying fresh water for drinking, cooking, bathing etc. and
another for supply of treated water for flushing;
b. Only treated water shall be used for flushing.
c. In no case, sewage or untreated waste water generated within the
project area shall be discharged through storm water drains or
otherwise into water bodies nor shall be discharged or injected into the
ground water by any mode; and
d. The project authority may opt or avail to common off-site treatment
facility, as feasible, for treatment with re-use & recycle of
corresponding quantity of treated water through the dual plumbing
system for flushing and other non-potable use.
(ii)
In Table 15.1: Environmental Conditions for Building and
Construction (Building Category ‘1’: 5000 Sq.m to < 20,000 Sq.m)
3
(a) For serial No. 3(a) and the entries relating thereto, the following
shall be substituted, namely:-
3(a)
Onsite solid waste management facility
shall be developed and a formal
contractual
arrangement
shall
be
ensured with authorized recyclers or
concerned
municipal
agency
for
disposal
of
all
non-biodegradable
waste.
(b) For serial No. 3(b) and the entries relating thereto, the following
shall be substituted, namely:-
3(b)
Where
there
is
no
alternate
arrangement
for
disposal
of
biodegradable waste, an organic waste
composter or a vermin-culture pit with
a minimum capacity of 1.0 kg per day
or 150 sqm of built-up area shall be
installed and operated.
(c) For serial No. 4 and the entries relating thereto, the following
shall be substituted, namely:-
4.
Sewage
treatment
plant.
(i) In
areas
where
there
is
no
municipal sewage network:
(a) Onsite sewage treatment systems
with capacity to treat 100% waste
water shall be installed with
appropriate
tertiary
treatment
system with disinfection for black
and grey water. Such treated
water shall be used with dual
plumbing system for flushing and
other non-portable use;
OR
(b) In case of usage of septic tank,
only
black
water
shall
be
discharged into the septic tank.
4
Grey
water
shall
be
treated
through
natural
treatment
systems
or
other
secondary
treatment
as
feasible.
Such
treated water shall be used with
dual
plumbing
systems
for
flushing and other non-portable
use;
The excess treated water shall
conform to the general discharge
norms of the Central Pollution
Control Board or MoEF and CC.
(ii)
In
area
where
there
is
municipal sewage network.
(c) Onsite sewage treatment systems
with capacity to treat 100% waste
water shall be installed with
appropriate
tertiary
treatment
system with disinfection for black
and grey water. Such treated
water shall be used with dual
plumbing system for flushing and
other non-portable use;
OR
(d) The project authority or developed
may opt to discharge only black
water in such municipal sewage
network subject to availability to
trunk sewer line. For this purpose,
two separate pipeline network- one
for black water discharge and
other for collection of grey water
shall be installed. Grey water shall
be
treated
through
natural
treatment
systems
or
other
secondary treatment as feasible.
5
Such treated water shall be used
with dual plumbing system for
flushing and other non-portable
use;
(iii)
In Table 15.2: Environmental Conditions for Building and
construction (Building Category ‘2’ ≥ 20,000 Sq.m to 50,000 Sq.m)
(a) For serial No. 3(a) and the entries relating thereto, the following shall
be substituted, namely:-
3(a)
Onsite solid waste management facility
shall be developed and a formal
contractual
arrangement
shall
be
ensured with authorized recyclers or
concerned
municipal
agency
for
disposal
of
all
non-biodegradable
waste.
(b) For serial No. 3(b) and the entries relating thereto, the following shall
be substituted, namely:-
3(b)
Where
there
is
no
alternate
arrangement
for
disposal
of
biodegradable waste, an Organic waste
composter or a vermin-culture pit with
a minimum capacity of 1.0 kg per day
or 150sqm of built-up area shall be
installed and operated.
(c) For serial No. 4 and the entries relating thereto, the following shall be
substituted, namely:-
4.
Sewage
treatment
plant.
i. Onsite Sewage Treatment Plant with
capacity to treat 100% waste water
generated within the project area
through tertiary treatment shall be
reused
on
site
for
landscape,
flushing, HVAC, fire-fighting and
other end-uses.
6
ii. The
adequacy
of
the
sewage
treatment plant (STP) shall be
certified by an independent expert of
sewage management and a report in
this regard shall be submitted to the
authorized agency.
iii. Discharge of excess treated waste
water outside the premises: after
treatment in the sewage treatment
plant (STP), the treated water shall
meet the discharge standards as
notified by the Central Pollution
Control
Board
or
Ministry
of
Environment, Forest and Climate
Change, Government of India from
time to time.
iv. Waste water and treated water
quantification
system
through
metering or sub-metering shall be
installed.
v. Sludge form the onsite sewage
treatment
shall
be
collected,
conveyed and disposed as per the
Central
Public
Health
and
Environment
Engineering
Organization
(CPHEEO)
Manual,
Ministry of Housing and Urban
Affair, on Sewerage and Sewage
Treatment Systems.
vi. Where Common Sewage Treatment
Plan Facility has been availed, it
shall be ensured that treated waste
water is recycled back to respective
building for reuse.
(iv) In Table 15.3,- Environmental Conditions for Building and Construction
(Building Category ‘3’ ≥ 50,000 sq.m to 1,50,000 Sq.m)
(a) For serial No. 3(a) and the entries relating thereto, the following shall
be substituted, namely:-
7
3(a)
Onsite solid waste management facility
shall
be
developed
and
a
formal
contractual arrangement shall be ensured
with authorized recyclers or concerned
municipal agency for disposal of all non-
biodegradable waste.
(b) For serial No. 3(b) and the entries relating thereto, the following shall
be substituted, namely:-
3(b)
Where
there
is
no
alternate
arrangement
for
disposal
of
biodegradable waste, an Organic waste
composter or a vermin-culture pit with
a minimum capacity of 1.0 kg per day
or 150sqm of built-up area shall be
installed and operated.
(c) For serial No. 4 and entries relating thereto, the following shall be
substituted, namely:-
4.
Sewage treatment
plant.
(i) Onsite Sewage Treatment Plant
with capacity to treat 100% waste
water generated within the project
area through tertiary treatment
shall be installed. Treated waste
water shall be reused on site for
landscape, flushing, HVAC, fire-
fighting and other end-uses.
(ii) The
adequacy
of
the
sewage
treatment plant (STP) shall be
certified by an independent expert
of sewage management and a
report in this regard shall be
submitted
to
the
authorized
agency.
(iii) Discharge of excess treated waste
water outside the premises: after
treatment in the sewage treatment
plant (STP), the treated water shall
meet the discharge standards as
notified by the Central Pollution
8
Control
Board
or
Ministry
of
Environment, Forest and Climate
Change, Government of India from
time to time.
(iv) Waste water and treated water
quantification
system
through
metering or sub-metering shall be
installed.
(v) Sludge form the onsite sewage
treatment
shall
be
collected,
conveyed and disposed as per the
Central
Public
Health
and
Environment
Engineering
Organization (CPHEEO) Manual,
Ministry of Housing and Urban
Affair, on Sewerage and Sewage
Treatment Systems.
(vi) Where Common Sewage Treatment
Plan Facility has been availed, it
shall be ensured that treated waste
water is recycled back to respective
building for reuse.
By Order
By order and the name of the
Governor of Karnataka.
(LATHA.K)
Under Secretary to Government
(Development Authority and NaYoSe)
Urban Development Department.
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Date: 2026.02.23 17:59:02 +05'30'