I noticed a crack on our basement wall or foundation wall (not sure what to call it). Our house is fairly new, built on mid 2017. We have a finished basement so there's no way to check the crack from inside unless I remove the basement interior wall. Is this something we should be worried about? Should we get a professional to check this or at least patch it if it's not a serious damage? Thanks in advance for any inputs! 
Walls – Crack on basement wall/foundation wall
basementcrackfoundationwalls
Related Solutions
Water will always win if you "fix" these from the inside.
The correct, effective, and unfortunately expensive fix is to excavate outside and drain the water below wall level outside, then seal and drain the exterior of the wall to the exterior drain.
You may choose to chisel out this mess and try fixing from the inside again, but it will almost certainly fail again. The other inside approach is to "capture" the leak and lead it to a sump.
If tilting at the windmill, this image from "www.oldhouseweb.com" illustrates the correct shape for chiseling or diamond-blade cutting out the crack before attempting to re-fill it. At the bottom of their page they note that their information came from Michagan State University Extension publication E2109, and the image would appear to also have come from that publication originally.
This is a common situation and is extremely unlikely to cause significant damage to your house. The biggest risks are (a) that someone is exceptionally sloppy and damages your services (water/sewer/gas/electric) while digging to install the new services, and (B) vibration might provoke a bit of minor settling and a crack or two in your plaster.
Disasters aren't impossible, but also aren't worth worrying about until they occur, unless there is something very, very odd about your situation. And if a disaster should occur, the builder's insurance should cover it, if they are at all legitimate.
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Best Answer
That is not a problem and quite common. I would put a tape measure in the photo and take a photo then check it in a year, no change no big deal. Large change then con aging the builder may be a good idea. Also keep an eye on the earth below if the ground is going away (sink hole or settling) their may be a larger issue but small cracks are quite common.