You will need to consider the siding and roofing materials you would like to use to finish this space. And you might weigh the quality of exterior materials against their visibility. Also in the cost of the addition, be careful to factor in the permits needed and the work needed to prepare the foundation.
Envelope size - 4-3/8 x 5-3/4. Card paper size - 5-1/2 x 8-1/2 (half a letter sized sheet). Finished card size - 4-1/4 x 5-1/2. A4: Envelope size - 4-3/4 x 6-1/4. Card Paper Size 8 x 12-1/4. Card finished size - 4-1/2 x 6-1/8.
Aspect ratios range from 1.42 to 1.8. There is no standard for the business card dimensions. Sharing dimensions with other cards makes storage easier, for example banking cards (85.60 Ã 53.98 mm) and business cards in Western Europe (85 Ã 55 mm) have almost the same size.