How do I extend my small concrete step to be longer and wider?

If I were in your shoes, I'd build (or have built) a sturdy pressure-treated lumber step I was more comfortable with.

maybe cinder blocks mortered to step, step cleaned first. don't use until cured? Iwould ask, ' Ask This Old House' {tv show has web site]

Make the builder come back! That's not up to code! (Haha! Good luck with that, right?) No, really, you could build a concrete form the size you want, and fill it with concrete. But the original step would still show, so you might want to paint the whole thing afterward.

OR you could build a small wood deck over it, extending it out and making it safer that way. In my opinion, the second way would be easier and look better when it's done.

Bricks would be an easy, inexpensive and attractive way.

BTW Kim that is an older house and the code may very well have allowed it then. The 8-10 & 10-12 rule is fairly recent.

I would be inclined to build a deck like platform to fit over that step. I like the Trex type of product for easy maintenance.

I would build a small porch over and around the concrete step.

Pavers

This would be a great opportunity to meaure the existing step and buy more concrete block to builf it out to the dimensions you want. After its done you could paint it. I'd go as far to corner and out. Post pics after project done!

Perhaps something like the step in this picture?

I used pavers bricks and caulk for outdoor projects.

I would build a nice wooden stair to cover it and seal it really well. Just my 2 pennies. You will have to dril holes in that step and insert rebar when you form it up if you want it to hold. Where I live I think 7" is code so I'd check that and be sure it doesn't become a liability issue. It seems a bit high now but it's a picture. Good luck

Thanks to everyone!