Civil Code (Cap. 16), article 435

435. (1) Even where the construction is not made on the boundary-line, the neighbour may, if a distance of at least one and one-half metres has not been lef t, demand co-own ership of the wall, and may build up to, and against such wall, on paying, be sides the value of half the wall, the value of the ground which he wo uld thus occupy, unless the owner of the ground prefers to extend h is building, at the same time, up to the boundary-line. (2) If the neighbour does not wish to avail himself of such power, he must construct his wall or building in such a manner that there shall be a distance of three metres from the wall or buil ding of the other party. (3) The same rule shall be observ ed in any other case where the construction of the other party i s at a distance of less than t hree metres from the boundary. (4) The mere raising of the height of a house or wall already existing is deemed to be a new construction. Exception.436. The provisions of the last t wo preceding articles shall not apply in the case of buildings destined for public use, or of w alls bordering on public squares or streets. 138 [CAP. 16. CIVIL CODE Planting of trees, etc. Amended by: II.1920.2,3.