172 LAWS OF MARYLAND. [CH. 99

tion of and the benefit assessed against any property as
made by the Commission shall be final, subject only to re-
vision at said hearing. The Commission may change the
classification of property from time to time as said proper-
ties change in the uses to which they are put. Said benefits
shall be levied for both water supply and sewerage con-
struction and shall be based for each class of property upon
the number of front feet abutting upon the street, lane,
road, alley or right-of-way in which the water pipe or sewer
is placed; provided, however, that in the case of any irregu-
lar shaped lot abutting upon a road, street, lane, alley or
right-of-way in which there is or is being constructed a
water main or sewer at any point, said lot shall be assessed
for such frontage as the Commission may determine to be
reasonable and fair; and provided further that no lot in a
subdivision property shall be assessed on more than one
side, unless said lot abuts upon two parallel streets, that
corner lots and water front lots may be averaged and as-
sessed upon such frontage as the Commission may deem
reasonable and fair, and that all lots in this class shall be
assessed even though a water main or sewer may not ex-
tend along the full length of any boundary; and provided
further, that no land so classified as agricultural by this
Commission shall be assessed a front foot benefit when said
agricultural land has constructed through it or in front of
it a sewer or water main, until such time as the water or
sewer connection is made, and when so made and for every
connection such land shall become liable to a front foot as-
sessment for such reasonable frontage not exceeding three
hundred feet, as may be determined by said Commission,
and shall be immediately assessed at the rate of assessment
determined by said Commission for agricultural land.
Front foot benefit charges for water supply and sewerage
construction shall be as nearly uniform as is reasonably
practical for each class or subclass of property through-
out each sanitary district for any one year and no benefit
charge once levied, shall be increased; provided, however,
that whenever the Commission acquires an existing system
other than a municipal system, the construction of which
has been added in whole or in part to the purchase price
of land or lots abutting upon said system and which con-
tribution the Commission has determined to be a factor in
the cost to the Commission of such system, the Commission
may, in its discretion, levy a front foot assessment less
than the uniform front foot assessment levied in the re-
mainder of the district in which said system is located. The