am assuming this is a concrete structure, when shifting service toilet to utility area, and if there are apartments above, then running extra lengths of supply/drainage lines & introducing a structural sink slab (if this is concrete) under the new location can be charged extra.. it will be easier to divide the 3rd toilet. all services will be already available. only, do check on supply & drain pipes capacity as load is increased on the same pipes which were serving one toilet earlier..

Here's the explanation of how to know if you have room. Your total inches is 100. Assuming you have cabinet on each side, subtract 25.5 for each side (the depth of your countertops) and now you have 49" left. You need 33-48" on EACH side of the island. If you used a 12" deep cabinet for your island instead of the normal 24" depth, take the 49" and subtract 12 (but you will have some counter overhang) and you have 37" left. Divide 37 by 2 and this gives you only 18.5" of space on each side of your island - not nearly enough space to move around or to open doors/drawers/appliances.

It posted! So it looks like you might have enough room for a small sofa. Here is a small curved sectional that could work in this space. You could add two chairs facing the sofa as well: http://www.wayfair.com/Piedmont-Furniture-Lucy-2-Piece-Sectional-DQPG1047.html Or a black leather love seat ( and two or three chairs facing it): http://www.wayfair.com/Flash-Furniture-Hercules-Imperial-Series-Leather-Love-Seat-FFC1995.html Some awesome club chairs : http://www.cymax.com/Coaster-Accent-Chair-in-Bird-and-Branch-Pattern-460406.htm http://www.wayfair.com/Monarch-Specialties-Inc.-Vintage-French-Fabric-Arm-Chair-and-Ottoman-I-8058-MNQ2448.html and I know you have black and white as your colors but know that you can add some color with pillows or even with some chairs - red, purple. yellow or orange would be fun. Some ideas: http://www.wayfair.com/Armen-Living-1404-Club-Chair-ARA2244.html?piid%5B0%5D=10031715 http://www.wayfair.com/Colt-Modern-Club-Chair-CSTD1445-CSTD1445.html?piid%5B0%5D=15331005 http://www.overstock.com/Home-Garden/Furniture-of-America-Gianne-Contemporary-Striped-Club-Chair/9998516/product.html?refccid=URVAVNNNBEDJ6QKB34JHV4DQW4&searchidx=10 http://www.overstock.com/Home-Garden/angelo-HOME-Provence-Purple-Sutton-Arm-Chair/9066837/product.html?refccid=MCJCMZ7EU42L4U2HJYM22YNIFA&searchidx=13

A McSo. Couldn't the base of 15cm overhang be supported end to end with steel. As a single steel structure mounted on the larger cabinet area visible here. It should be sufficient for supporting the extension. Corbels will provide additional support but IMHO may not be required. Have you thought about an semi circular or a D shape counter to avoid sharp edges. Thanks, Nitin Cornerstone Designs, Bangalore.