What is your
brownstone worth?
A certified appraisal that accounts for every corbel, every original floor, every landmark designation — down to the detail.
The Before / After Reveal
Drag to reveal
hidden value.
Every original detail carries a dollar figure. Most sellers never see it. Slide across each photograph to watch the numbers materialize over the architecture.
Facade · Curb Presence
Parlor Floor · Original Millwork
Architectural Details
$156,200
Landmark Designation
+$67,000
Floor Plan Rarity
+$41,000
Estimated Premium
$264,200+
Illustrative premiums for a 3-story Park Slope brownstone, 20-ft wide, c.1889. Your certified appraisal accounts for every specific condition.
The Walkthrough
Curb to cellar,
room by room.
Every appraisal follows the same path a serious buyer takes — from the sidewalk to the sub-basement — because that's the only way to price a nineteenth-century house correctly.
USPAP Certified
Every report meets Uniform Standards of Professional Appraisal Practice, accepted by all NY courts and lenders.
Landmark Expertise
Deep familiarity with NYC LPC regulations and how landmark status affects market value in each brownstone district.
10-Day Turnaround
Certified written report delivered within 10 business days of walkthrough. Estate deadlines always honored.
Margaret Holloway, MAI
Member, Appraisal Institute · NY State Certified Residential Appraiser #46-2918
The Appraiser
Twenty-eight years walking
the same blocks.
I started in 1998 when half of Park Slope was still under-appraised. The banks didn't understand what a plaster medallion was worth. The estate attorneys didn't know how to argue for a pocket door pair. I learned the language of these houses from the inside out — the difference between brownstone and limestone facades, between original-growth heart pine and a 1970s overlay, between a cornice that's been repaired and one that's intact.
Today I do one appraisal per day, five days a week. No assistants. No junior appraisers. I walk every floor myself.
1,400+
Appraisals completed
28 yrs
Brooklyn practice
$0
Reports challenged in court
Client Outcomes
Margaret's report was the difference between us accepting the first offer and waiting three weeks for the right buyer. The architectural premium breakdown gave our attorney exactly what she needed.
Catherine Okafor
Seller, 19-ft Limestone Rowhouse
Cobble Hill, Brooklyn
Sold $187,000 above initial offerWe needed a certified number before the estate could be settled. The report arrived in nine days, covered every detail the court required, and held up under opposing counsel's scrutiny.
James Whitfield
Estate Attorney
Brooklyn Probate Court
Estate settled without disputeBefore we gutted the parlor floor, we needed to know what we were working with. The appraisal told us exactly which details to preserve and which renovations would destroy value.
Priya & Daniel Mehta
Renovation Owners
Park Slope, Brooklyn
Preserved $94,000 in millwork value
Sample Report
See the depth
before you commit.
Download a redacted sample report from a completed Park Slope appraisal — 47 pages, full architectural photography, and the complete methodology behind every number.
One Appraiser · One House · One Number
Your nineteenth-century house
deserves a twentieth-century expert.
$975. One walkthrough. A certified report in ten business days that accounts for every detail the market ignores — until it doesn't.
Brooklyn only · Park Slope, Cobble Hill, Carroll Gardens, Boerum Hill, Fort Greene, Clinton Hill, Crown Heights