Grandt Line Architectural Detail

You may want to check out all these scales for components that might work for your models. An oversized window in HO Scale may be just what you need for your 1/4" model. HO railings may work as porch trim for 1/4". 1/4" eave brackets may work as porch trim for 1/2". Get the idea

A couple notes about "train scale" versus "dollhouse" scale:

N-Scale: Suitable for dollhouse miniaturists workingin (1:144)
HO-Scale: (1:87) (also called half-O scale)

O-Scale: Dollhouse scale or Quarter scale (1:48)
G-Scale: (1:29) Close to Dollhouse scale or Half scale (1:24)