Looking for a modular home builder in New Castle, DE? Describe your project once and up to three modular home builders who work in New Castle and New Castle County get back to you with a quote. It's free and there is no obligation.
New Castle is home to about 5,715 people (2024 Census Bureau estimate), a growing community (+2.9% since 2020). With 1,643 people per sq mi, it is a suburban area. Rural lots and replacements of older homes here are good fits for modular construction.
New Castle at a glance
- Population (Census Bureau estimate, 2024)
- 5,715 (+2.9% since 2020)
- Rank in Delaware
- 11th of 57 cities and towns
- Land area
- 3.5 sq mi
- Population density
- 1,643 people per sq mi (suburban)
- Type
- City (New Castle city)
- Main county
- New Castle County
What to check before hiring in New Castle
- Code: in Delaware, modular homes are built to the state or local building code.
- Site work: foundation, utilities, crane access and finishes must be in the quote.
- Access: delivery trucks and cranes need road and lot access.
- Price drivers: size, finishes, transport distance and site work.
Useful official resources
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Modular Home Builders Association
Official information and guidance.
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ICC: International Code Council
Official information and guidance.
Services available in New Castle
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Modular home
Factory-built modular home delivered and set on a site-built foundation, with finish work.
Frequently asked questions in New Castle
How much does a modular home cost in New Castle, DE?
It depends on size, finishes, transport and site work. Describe your project: builders who serve New Castle reply with a quote.
How long does it take?
Often a few months from order to move-in.
Can I customize the design?
Most modular builders offer customizable plans.
Which modular home builders will contact me?
Up to three independent modular home builders who serve New Castle and the surrounding area, chosen for the service you need. Your details are shared only with your consent.
Source: U.S. Census Bureau, Population Estimates Program (Vintage 2024) and Gazetteer Files (public domain), imported on 10/31/2026. Figures describe the incorporated place or county as published; they are shown for information only.