The court, jury, commissioners or master must hear such legal testimony as may be offered by any of the parties to the proceedings, and thereupon must ascertain and assess:
1. The value of the property sought to be condemned and all improvements thereon pertaining to the realty, and of each and every separate estate or interest therein; if it consists of different parcels, the value of each parcel and of each estate or interest therein shall be separately assessed.
2. If the property sought to be condemned constitutes only a part of a large parcel, the damages which will accrue to the portion not sought to be condemned, by reason of its severance from the portion sought to be condemned, and the construction of the improvement in the manner proposed by the plaintiff.
3. If the property, though no part thereof is taken, will be damaged by the construction of the proposed improvement, the amount of such damages.
4. Separately, how much the portion not sought to be condemned, and each estate or interest therein, will be benefited, if at all, by the construction of the improvement proposed by the plaintiff; and if the benefit shall be equal to the damages assessed, under subsection 2 of this section, the owner of the parcel shall be allowed no compensation except the value of the portion taken; but if the benefit shall be less than the damages so assessed, the former shall be deducted from the latter, and the remainder shall be the only damages allowed in addition to the value of the portion taken.
5. If the property sought to be condemned be for a railroad, the cost of good and sufficient fences along the line of such railroad between such railroad and other adjoining lands of the defendant; and the costs of cattle guards where fences may cross the line of such railroads.
Ê As far as practicable, compensation must be assessed for each source of damages separately.