Looking for good architect for Park Slope brownstone renovation

I’m looking to convert a four-story landmarked brownstone in Park Slope into a bottom floor apartment plus 3-story townhouse above. That is, separate the bottom floor from the rest and install a second kitchen in the upper part. I want to respect the original features of the house — the house has much of the original 1889 detailing — but also make good use of the space. Can anyone recommend a good architect who is reasonably priced and could draw up plans for a contractor?