What is AI property analysis?

AI property analysis uses artificial intelligence to evaluate a property's condition, layout, and features from a walkthrough video. RealtyLens processes the video through a 5-step AI pipeline to generate floor plans, room-by-room condition scores (1-10 scale), issue detection with repair cost estimates, and MLS-ready listing copy — all in under 5 minutes.

How does RealtyLens generate floor plans from video?

RealtyLens analyzes your walkthrough video to detect room transitions, doorways, and spatial relationships. The AI maps room adjacencies and connection types to generate an accurate spatial floor plan — no measuring tape or special equipment needed.

How accurate are the AI condition scores?

RealtyLens provides granular 1-10 condition ratings for every room, assessing walls, floors, ceilings, and fixtures individually. The AI detects cracks, water damage, wear patterns, and other issues with severity levels. While not a replacement for a licensed home inspection, these scores give agents a reliable preliminary assessment for listing preparation.

How long does a property analysis take?

The average analysis takes about 5 minutes from upload to complete report. You record a walkthrough video (typically 3-5 minutes), upload it to RealtyLens (1 minute), and the AI generates everything in approximately 3 minutes.

What does the AI property report include?

A RealtyLens report includes: AI-generated spatial floor plans, room-by-room condition scores (1-10 scale), feature detection (fixtures, appliances, finishes), issue tracking with severity levels and repair cost estimates, natural light assessment, MLS-ready listing copy with headline and highlights, value estimates, and target buyer profiles.

Can RealtyLens replace a home inspection?

RealtyLens is designed to complement — not replace — a licensed home inspection. It gives real estate agents a fast, detailed preliminary assessment for listing preparation, pricing strategy, and client conversations. For formal transactions, a licensed inspector should still be engaged for structural, electrical, and plumbing evaluations.

RealtyLens

for rentRealtyLens property overview

$8,400

420 W 51st St Apt 4

New York, NY, 10019

View more New York, NY property pages

4Beds

2Baths

N/ASqft

N/A$/sqft

Market Insights

Market comparison pendingN/A

Comparable price-per-square-foot data is still developing for this home.

Nearby median$14/sqft

Nearby properties12

Property sizeN/A

12 nearby properties available for comparison.
Price history is limited, so current comps matter more than trend alone.
Square footage is missing, so valuation should lean more heavily on comps and condition.

Property Read

FreshnessCurrent market data

The listing facts are current enough for an initial property review.

Market Position12 nearby signals

Nearby inventory exists, but square-footage or price data is incomplete for a clean median comparison.

Price MovementInitial price point

Price history is still limited; review again as more market activity becomes available.

Diligence Read1 item to check

AI ReadinessNeeds verification

Assistant read

Generate a buyer-agent read of this listing — pricing, risks, comp check, and negotiation leverage. Takes a few seconds.

Generated from the facts shown on this page and nearby market data. Not a professional appraisal.

Listing Details

Days on market: 354 days
Last price change: No change recorded
Listed: May 23, 2025
Photos: 9 photos
Property type: apartment
Status: for rent

Photos

Building Facts

Year built: 1910
Stories: 5
Total units: 13
Residential units: 12
Building area: 13,069 sqft
Lot size: 5,021 sqft
Land use: Mixed residential and commercial buildings
Building class: C7

From NYC public records where available.

Price History

May 4, 2026Initial record

$8,400for rent

Public Records

DOB violations0 open

22 total recorded against the building

HPD violations8 open

202 total recorded

ACRIS documents16

Tax-lot deed, mortgage, and transfer records on file

311 calls (12 mo)23,760

Top: illegal parking

Top complaint types in ZIP 10019

Illegal Parking2,827
Homeless Person Assistance1,553
Encampment1,434
HEAT/HOT WATER1,425
Noise - Residential1,154

Recent DOB

Nov 2, 2016V*-DOB VIOLATION - DISMISSED · AEUHAZ1-FAIL TO CERTIFY CLASS 1 NONE
Nov 2, 2016V*-DOB VIOLATION - DISMISSED · AEUHAZ1-FAIL TO CERTIFY CLASS 1 NONE
Feb 24, 2016V*-DOB VIOLATION - DISMISSED · AEUHAZ1-FAIL TO CERTIFY CLASS 1 NONE
Feb 24, 2016V*-DOB VIOLATION - DISMISSED · AEUHAZ1-FAIL TO CERTIFY CLASS 1 NONE

Recent HPD

Feb 26, 2026Class B · § 27-2045(B)(1)(A) HMC, § 12-01, § 12-03 RCNY REPAIR, REPLACE OR PROVIDE AN APPROVED AND OPERATIONAL SMOKE DETECTING DEVICE, INSTALLED IN ACCORDANCE WITH DEPARTMENT OF BUILDINGS...
Feb 26, 2026Class B · § 27-2021 ADM CODE PROVIDE SUFFICIENT, PROPER AND SEPARATE METAL RECEPTACLES FOR THE DEPOSIT OF GARBAGE, RUBBISH AND OTHER WASTE MATERIAL AND ARRANGE FOR COLLECTION AND DISPOSAL...
Feb 26, 2026Class A · §27-2104(B) HMC POST A PROPER NOTICE REGARDING RENT STABILIZATION LAW, IN A FORM APPROVED BY THE COMMISSIONER, IN A CONSPICUOUS LOCATION WITHIN THE COMMON AREA AT THE BUILDING S...
Feb 26, 2026Class A · § 27-2013 ADM CODE PAINT WITH LIGHT COLORED PAINT TO THE SATISFACTION OF THIS DEPARTMENT AT CIELING AT PUBLIC HALL STAIRS, 2nd STORY

Sourced from NYC Open Data (DOB, HPD, ACRIS). Updated as the city republishes — check the original source for live status.

You can also find this listing on StreetEasy.

Listing data sourced from streeteasy.com. RealtyLens enriches and contextualises it for you, but the original listing lives on the source.