SKK
I guess there was a similar thread about this which was created by you...
However, again, agreed your mom has done a lot for you..more than any other parent can/ will/supposed to do for their kids...
But does that mean, you sacrificing your marriage, your husbands peace of mind, your peace of mind, your and your husbands' self respect for the sake of satisfying your moms anger and feelings???

I dont understand this.
See first of all you have to understand that there will be hurt and upset feelings not because of your decision, but because of the insecurity your mom has...because of the feeling of loosing control, because of the feeling of no one to take care of...no one to talk to..no one to boss around

so...you have to slow down...clear you brain of this emotional blackmail,tell your mom, you are not moving far off..just that as you are grown up and you need to have your own family your own house and thats how its supposed to be...and thank her for taking care of you and the kid all this while..let her know that you always need her support and blessings...dont make her feel used and thrown out..rather let her know its time for you to standup on your feet and implement those that she taught to you...
for few days/weeks she would sure be upset..but again slowly they would come to terms ...most of all to realise that its time to let go....Also take her to the new house/apt., take her suggestions on furnishings..(whether you accept those suggestions or not is again upto you...but just make her feel that she is still family...just that now the priorites have changed...)