Carroll W. Diefenbach DBA Diefenbach Construction

Construction company in New Columbia, PA 17856

About this company

Carroll W. Diefenbach DBA Diefenbach Construction is listed as a construction company based in New Columbia, Pennsylvania, in Union County. Federal motor carrier records list 1 drivers and 1 trucks for the company. It is one of 4 general contractors in ZIP 17856.

Fleet size

Drivers1

Trucks1

Last federal filing: Jun 2016. Source: FMCSA.

Moderate market, crowded fieldArea profitability for construction in ZIP 17856

Housing demand29

Sales pace, new listings and new construction. Source: Zillow

Customer spending power60

Household income and home values

Room for another contractor25

More crowded than 75% of US ZIPs

Scored against every US ZIP. An index of local conditions, not this company's results.

County context

One of 45 general contractors in Union County, PA.

8 remodeling companies in Union County, PA.

All 104 construction companies in Union County, PA.

ZIP 17856 at a glance

Population: 3,167 (25 per sq mi)
Median age: 46
Households: Median income $91,661 · 44% earn six figures
Housing: 94% owner-occupied
Workforce: 71% labor-force participation · 2.4% unemployment

ZIP figures are US Census estimates for the ZIP area, not the company.

Housing market around ZIP 17856

Figures describe the local area, not this company.

Typical home value$271,000+5.5% past year · +80% in 10 years

12-month value outlook+3.2%

Days to sale agreement17Lewisburg metro

New homes permitted, 202563Union County

Listings with a price cut20.4%Lewisburg metro

Source: Zillow (home values, rent, outlook and metro sales), data through Sep 2026. Permits: U.S. Census Bureau.

Typical home value, last 10 years

Source: Zillow Home Value Index, Sep 2026.

Local building angle: Union County permitted 63 new homes in 2025. 11% of the homes in this ZIP were built since 2000.

Local figures are estimates from public records and Zillow housing data, updated regularly.