Yes, it is. The childhood home of Mona Mayfair.
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        John R. Rouse - Harp - Mitchell - Kirkpatrick House | 
    
The Fontevrault Outpost
  
And here I thought I'd only have a drawing of the house as it
            appeared in The Witches' Companion (working on it). This
            house was used in the novel Lasher.  It was the
            childhood home of Mona Mayfair before the deaths of Alicia and
            Gifford, the increasing drunkenness of her father Patrick and
            Rowan's sterilization and ensuing inability to produce a legacy heir
            of the required vintage.  Upon these events, Mona moved to the
            First Street house, the traditional home of the Legacy Witch.
             However, she did not abandon the property and much like Anne
            Rice herself was doing at the time she wrote Lasher, Mona had
            the house fully restored, the completion being noted at the end of
            Taltos.  Apparently, she did a good job.  Take a
            look.
Well, that's all for now, folks. But take a look at the handy link I've supplied for your reading pleasure. It lists the house's address in New Orleans as 3711 Saint Charles Avenue, which is also noted in The Witches' Companion.
Anne Rice's Spooky New Orleans House For Sale (2011)
The amazing image of the house at the top of this page came from this website:
https://www.asergeev.com/pictures/archives/compress/2006/498/16.htm