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Luxury penthouse interior at blue hour with floor-to-ceiling glass walls overlooking illuminated city skyline from low camera angle near polished marble floor
White-Glove Valuation Practice · New York & Miami
Preliminary Valuation RangeConfidential

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The Practice

We walk penthouses barefoot.

The preliminary range the calculator returned is a starting point. It accounts for market position, elevation, and square footage. It does not account for the heated Calacatta marble beneath our feet, the Lutron system that has been integrated with the HVAC, or the terrace that wraps three sides and adds 1,400 square feet of legally leasable air.

Those details require the walkthrough. Our clients are divorce attorneys splitting nine-figure estates, hedge fund principals quietly unwinding trophy positions before market shifts, and developers who need a certified number before the amenity floor has cured.

In each case, the accuracy of the appraisal is not an abstraction. It is the number that appears in court filings, in insurance riders, in offering memoranda. It is the number that holds.

Case Study — 432 Park Avenue

A $42M Duplex Reappraised After a Gaggenau Refit

When a hedge fund principal completed a full Gaggenau kitchen installation — refrigeration columns, steam oven, teppanyaki surface — the original appraisal was rendered obsolete. Our walkthrough identified $4.2M in attributable value the prior appraiser had missed: the Gaggenau system, a reconfigured butler's pantry, and the elimination of a structural column that opened the kitchen sightline to the terrace.

Final certified value: $46.8M. The reappraisal supported an insurance rider renegotiation that recovered $280,000 in annual premium.

$46.8MCertified Valuation
Luxury penthouse kitchen with high-end Gaggenau appliances and marble countertops overlooking Manhattan skyline
Methodology — Sightline Premium

Why a Direct Park View Commands 15–22% Over River at Equal Elevation

At the 60th floor, every sightline is finite. Central Park's 843 acres represent a permanent void in the Manhattan grid — developable land that will never be developed. A direct north-facing park sightline at elevation 620 feet commands a 15–22% premium over an equivalent Hudson River view at the same floor, because the river view carries latent risk: Jersey City continues to build.

We weight sightline permanence, angular field of view, and historical comp divergence. A park-facing corner unit on the 64th floor of a Billionaires' Row tower carries a different multiplier than a park-adjacent unit on the 40th floor of a pre-war.

22%Sightline Premium (max)
Floor-to-ceiling glass penthouse window with panoramic Central Park view at dusk from high elevation
Case Study — One57, Floor 74

Pre-Sale Pricing a $67M Crown Jewel Before Amenity Completion

A developer needed a certified pre-sale valuation for the top four floors of a new Midtown tower while the amenity floor was still concrete. Our methodology accounts for projected amenity premiums using comparable towers' post-completion comp data, adjusted for the specific program: indoor pool, private dining, and a dedicated sommelier service that we valued at $1.1M in attributable per-unit premium across the crown units.

The pre-sale certification supported a $67M ask. The unit sold at $64.5M — within our predicted range — six weeks after the amenity floor opened.

$64.5MFinal Sale Price
Luxury high-rise penthouse living room with expansive city views through floor-to-ceiling windows at twilight
Methodology — Smart Systems

Lutron vs. Crestron: Why the Appraiser Must Know the Difference

A Lutron Homeworks QS system — properly installed, with scene programming for four zones and motorized shading throughout — adds differently than a Crestron OS3 integration with HVAC, AV, and security. Lutron is an amenity; Crestron is infrastructure. We have appraised both in over 340 properties and maintain a proprietary database of smart-system attributable value by building vintage, unit tier, and buyer profile.

In a 2025 estate settlement on Central Park South, the distinction between a Lutron-only system and a full Crestron integration was the difference between a $180,000 and $620,000 systems valuation — a $440,000 swing on a single line item.

$440KSingle-Item Swing (2025)
Modern smart home control panel with ambient lighting and automated window shades in luxury penthouse
Practice Credentials
$4.2B

Total Appraised Portfolio Value

Since 2009

340+

Luxury Properties Appraised

Above the 30th Floor

17

Years of Practice

New York & Miami Markets

100%

Court-Admissible Certifications

Estate & Litigation

MAI Designated Member, Appraisal Institute

Certified General Appraiser — New York & Florida

Member, Counselors of Real Estate (CRE)

USPAP Compliant — Current Cycle

Client Perspectives

Those who retain us
rarely retain anyone else.

"

In thirty years of handling high-net-worth divorce proceedings, I've retained six different appraisal firms. Appraise is the only one whose certifications have never been successfully challenged in court. When opposing counsel sees their signature, they stop arguing about the number.

Professional woman attorney in business attire with confident expression

Margaret Holloway

Partner, Holloway & Crane LLP

Estate & Matrimonial Law, New York

"

We needed a pre-sale certification on four crown units before the amenity floor was finished. Every other firm wanted to wait. Appraise walked the raw space, consulted our architect, and delivered a range that the eventual sales prices landed inside. That's the whole game.

Business executive man in dark suit with professional demeanor

David Sternberg

Principal, Meridian Capital Development

Luxury Tower Development, NYC & Miami

"

The fund was quietly unwinding a position in three Tribeca penthouses. We needed valuations that wouldn't move the market. Appraise understood the confidentiality requirements before I finished the sentence. Discreet, precise, and faster than I expected at this level.

Hedge fund principal man with sharp features in professional setting

Jonathan Reeve

Managing Director, Alterra Capital Partners

Alternative Assets & Real Property, Greenwich

The number that appears in the filing is the number that matters.

Schedule your private walkthrough. We confirm within four business hours and are on-site within five business days.

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