I would change it to hardwood, as the adjoining floors. All renovation is "messy". Better now than later.A smoother result with the entire kitchen and adjacent areas feeling larger as well.

You have a very nice kitchen.

Personally, I find the square shape of the tiles and the width of the grout make it look dated. You could shop for a new floor to have an idea of the cost then decide if it is worth it to you.

If the floors could be very thoroughly cleaned (which is also messy), and the grout permanently whitened, then tiles and grout thoroughly sealed, I think your floors would look fine. Hardwood would definitely be more up to date, and also has advantages in the kitchen (less fatigue, dropped items won't break), but it's a tradeoff of cost, time, and mental effort.

Like Carol says, the floor is not so bad that a good cleaning will definitely be a big improvement. If, on the other hand, you have the resources to change the floor now, then go for it!! By the way, contrary to what some might suggest, I'd look into tile. Bamboo could be a candidate too.

What is on the floor in almost all high end new build? Hardwood......... Why? because when you unify flooring you enhance the sense of space and flow, and unless a tropical/desert clime, most don't want tile in their family room or dining room.. If you look at the first photo and look at the floor, it isn't in this case even a straight and truly logical cut off point between the two floorings. I am sure a talented "techie" Houzz soul can photos shop the difference with hardwood continued into the kitchen in that photo, You might be amazed : )

Right now, the tiles are fine...they just need a good cleaning. When the HARDWOODS are READY for their "sand and refinish", I would look at whether or not you want to change out the tiles to hardwood at that time.

If you put the hardwood in now, you will need to sand and refinish ALL the hardwoods at the same time. This is good idea ONLY IF the hardwood is VERY CLOSE to it's "best before date" of 20-25 years old. If the hardwoods are a LONG WAY OFF (if they are only 10-12 years old) then I would leave them, and the tile, alone.

No reason to add more expense today when the finish has another 7-10 years on it. Its a waste in my book.

The choice is yours, but I feel the tile is just fine with your kitchen. A good cleaning would certainly work without having to add new flooring. I would base my "change the floor?" answer on the answer to "When to redo the hardwoods?" That makes more sense to me.

Thanks everyone! I like the hardwood idea, but I feel Cancork is right. The hardwood in the house is about 15 years old but is pretty scratched up from the previous owners dogs. I was thinking of having the floors refinished, but not for another year or two, so I think it will make sense to have the new hardwood in the kitchen put in when I have the rest refinished. I think I will have it cleaned up for now if I do decide on hardwood. Otherwise, what sort of tiles do you recommend? I really liked what a model home I recently saw did:

is that a polished porcelain?