A house of this kind must, according to its locality, and the material of which it is built, be liable to wide differences of estimate in its cost; and from our own experience in such matters, any estimate here made we know cannot be reliable as a rule for other localities, where the prices of material and labor are different from our own. Where lumber, stone, and brick abound, and each are to be had at reasonable prices, the cost of an establishment of this kind would not vary much in the application of either one of these materials for the walls, if well and substantially constructed. There should be no _sham_, nor slight, in any part of the building. As already observed, the design shows a high degree of finish, which, if building for ourself, we should not indulge in. A plain style of cornice, and veranda finish, we should certainly adopt. But the roof should not be contracted in its projecting breadth over the walls, in any part of the structure--if anything, it should be more extended. The bay-window is an appendage of luxury, only. Great care should be had, in attaching its roof to the adjoining outer wall, to prevent leakage of any kind. If the walls be of brick, or stone, a beam or lintel of wood should be inserted in the wall over the window-opening, quite two inches--three would be better--back from its outer surface, to receive the casing of the window, that the drip of the wall, and the driving of the storms may fall _over_ the connecting joints of the window roof, beyond its point of junction with it. Such, also, should be the case with the intersection of the veranda or porch roof with the wall of the house, wherever a veranda, or porch is adopted; as, simply joined on to a _flush_ surface, as such appendages usually are--even if ever so well done--leakage and premature decay is inevitable. The style of finish must, of course, influence, in a considerable degree, its cost. It may, with the plainest finish, be done for $4,000, and from that, up to $6,000. Every one desirous to build, should apply to the best mechanics of his neighborhood for information on that point, as, in such matters, they are the best judges, and from experience in their own particular profession, of what the cost of building must be. The rules and customs of housekeeping vary, in different sections of the United States, and the Canadas. These, also, enter into the estimates for certain departments of building, and must be considered in the items of expenditure. The manner in which houses should be warmed, the ventilation, accommodation for servants and laborers, the appropriations to hospitality--all, will have a bearing on the expense, of which we cannot be the proper judge.