Both numbers are well below what Brown said. Heâd said that the elderly account for two-thirds of the cost, when in fact theyâre just over 20 percent, and that children account for one-third, when theyâre actually less than 20 percent.
A 20-by-20-foot garage totalling 400 square feet would cost between $16,000 and $24,000 without an apartment, and anywhere from $20,000 to $35,000 with an apartment.Homeowners who are skilled at construction and can do some or all of the work themselves can cut an enormous amount off of those numbers. 20-by-20-foot garage totalling 400 square feet would cost between $16,000 and $24,000 without an apartment, and anywhere from $20,000 to $35,000 with an apartment.
A single-car attached garage is roughly 240 square feet, ao with basic materials, the cost would be an average of $8,500âbut this can jump up to $10,000 if you use superior products. Building a detached garage can cost, on average, $1,500 more. If you add electrical and ventilation, the price jumps $13,000 and $15,000, respectively.