Pennington is a borough of about one square mile in Mercer County, entirely surrounded by Hopewell Township, with one ZIP code, 08534. The borough's own Historic Preservation Plan Element records that the names Smithfield and Queenstown were tried before Pennington settled in the 1750s, that the railroad arrived in 1875, and that the town incorporated in 1890 to separate its interests from the township. The Pennington School, founded by the Methodist Church in 1838, is on West Delaware Avenue.
The houses are old. The latest five-year Census figures, the 2020 to 2024 American Community Survey, count about 1,250 homes in the borough and date 36 percent of them to 1939 or earlier, and 71 percent to before 1980. In 2011 the borough enacted a Historic Preservation Ordinance and created both a Historic Preservation Commission and the Crossroads Historic District, centered on North and South Main Street and East and West Delaware Avenue, with about 160 structures from the early nineteenth to the early twentieth century. The district is local and not on the State or National Registers, though the old Delaware and Bound Brook Railroad station and the First Presbyterian Church are individually listed.
The ordinance is regulatory, not advisory. The plan says changes to siding, windows and exterior trim are carefully reviewed by the commission, and review now covers any structure more than fifty years old. The borough's documents do not say whether a change of paint color on its own needs approval, so if your house is in the district, ask the commission before you scrape, replace any trim or settle on new colors.
On houses this age, the prep is routine but slow: scraping and sanding by hand rather than running a machine across a carved profile, bonding primers over old oil paint, feathering back to sound paint and keeping original profiles, and primers that let old wood breathe so moisture does not blister the new coat. Most of these houses are also older than the federal lead rule. The EPA draws the line at six square feet of disturbed paint per room indoors and twenty square feet outdoors; above that, paid work on a pre-1978 home falls under its Renovation, Repair and Painting rule and must be done by a certified firm. NJ Painting Co. is not EPA Lead-Safe Certified, so where a Pennington house needs that, it needs a contractor who is, and we will tell you at the estimate.
Inside, we take time on older trim, doors and staircases where a steady brush hand shows, and refinish cabinets where the cabinetry is worth keeping. We use Benjamin Moore and Sherwin-Williams products, and every Pennington estimate is free and spells out the work.