51 Mercer St, Jersey City
Condominium · 6 units · built c. 1931 · Block 12905, Lot 8.
Building permits
- Alteration, issued Sep 28, 2026, 3 stories, described as “Paint exterior window frames, replacing rotten pieces as needed. replace existing water down spout in courtyard.”
- Alteration — Multi-Family, issued Jul 27, 2022, estimated cost $32K
- Alteration — Multi-Family, issued Aug 5, 2021, estimated cost $5K
- Alteration, issued Dec 31, 2019, described as “Replace gas-fired boiler”
Property taxes
- Assessment
- $2,924,100
- 2025 tax
- $68,278
- Assessed land
- $600,000
- Assessed improvements
- $2,324,100
- Condo units with their own tax lots
- 6
Zoning
Grove and Mercer Redevelopment Plan.
Flood zone
Current FEMA flood map: zone X, minimal flood hazard. FEMA’s preliminary map: zone AE, high risk: a 1% chance of flooding each year, base flood elevation 11 ft (NAVD88).
Recent sales
- Oct 22, 2025: $675,000, Unit 0004, 789 sq ft ($856 per sq ft)
- Dec 27, 2021: $435,000, Unit 0001, 704 sq ft, sold with other lots
- Nov 2, 2021: $535,000, Unit 0006, 789 sq ft, sold with other lots
- Oct 15, 2020: $499,000, Unit 0002, 708 sq ft, sold with other lots
- Mar 18, 2020: $575,000, Unit 0004, 789 sq ft, sold with other lots
Open-market sales since mid-2019, from the state’s SR1A sales file.
Landmarks
Part of Van Vorst Park Historic District (Jersey City historic district).
Board and land use applications
- Historic Preservation Commission case H-26-0181: Application, Approved, applied May 19, 2026. Repaint exterior window frames replacing rotted wood with matching parts on front of building. replace rotted window trim with hardwood and color matching aluminum coil in rear and sides of building. Replace drain downspout. Replace two…
- Historic Preservation Commission case H-24-0388: Application, Approved, applied Oct 7, 2024. Refinish front door