Cost of Replacement Sash Windows for small to medium sized homes
As with most other pricing, local glazing prices for a terraced house will be based on the style, size & number of windows that are needed.
But you can do yourself a favour by gathering several independent quotes from different installers and then comparing the double glazing prices on a cost and prices guide.
Popular designs for terraced properties are Casement Windows or Sash Windows and of the two styles, Sash Windows are probably the costlier to install.
Certainly if you are removing older Box Sash Windows and replacing them with slimmer Casement windows the cost of doing this will be higher than replacing casement with casement because there will be more labour involved in making good around the inner window reveals.