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Sussex County, DE Office Buildings for Sale

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Wilmington, DE Dover, DE Seaford, DE Milford, DE Millsboro, DE Newark, DE Lewes, DE New Castle, DE
25 properties
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Medical Office with Expansion Space
Updated: Nov 10, 2025
Medical Office with Expansion Space

924 MIDDLEFORD Road, Seaford, DE 19973

$780,000
0.51 AC lot
3,053 sq. ft. of finished first‑floor medical office space
2,182 sq.ft. unfinished second floor with separate access and interior stair connection
Reception, administrative offices, exam rooms, bathrooms, staff lounge, storage, and mechanical rooms
Adjacent parcel on the west side included
0.51‑acre combined property
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Small Office Building with On-Site Parking
Updated: Apr 9
Small Office Building with On-Site Parking

26286 SEAFORD Road, Seaford, DE 19973

$280,000
0.68 AC lot
Professional small office building with on‑site parking and a layout suited for professional firms, non‑profits, and service‑oriented small businesses
Direct frontage on Seaford Road with easy access and close proximity to Route 13 and Route 20
Interior includes multiple private offices, flexible workspaces, and an open conference/training area
Includes a kitchenette and restroom
Garage/shed on‑site for storage of files, equipment, or tools
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Office Building with Parking
Office Building with Parking

602 N PORTER Street, Seaford, DE 19973

$399,900
0.29 AC lot

Office property with central air, an on-site parking lot, and access to Rt. 20.

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Commercial Property on Major Highway
Commercial Property on Major Highway

8991 REDDEN Rd, Bridgeville, DE 19933

$1,250,000
4,200 sqft 2.00 AC lot

C-1 zoned commercial property on 2 acres for sale.

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Professional Office Building with Pond View
Professional Office Building with Pond View

924 Middleford Rd, Seaford, DE 19973

$780,000
5,235 sqft

Office building with expansion potential and adjacent parcel included.

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Downtown Milford Investment Property
Downtown Milford Investment Property

105-111 NE Front Street, Milford, DE 19963

$1,990,000
10,712 sqft

Fully-tenanted professional office space in Milford, Delaware.

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Dagsboro Mixed-Use Property For Sale
Dagsboro Mixed-Use Property For Sale

31229 Dupont Boulevard, Dagsboro, DE 19939

$1,200,000
6,900 sqft 1.44 AC lot

Mixed-use property with office, and storage buildings on 1.44 acres.

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Professional Office Building with Parking
Professional Office Building with Parking

26286 Seaford Rd, Seaford, DE 19973

$280,000
1,440 sqft

Small office building suited for professional firms and service businesses.

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Zoned UB3 Office Building
Zoned UB3 Office Building

123 W MARKET STREET, Georgetown, DE 19947

$599,999
3,000 sqft 1.50 AC lot

Office building on a large lot with on-site parking, zoned UB3 for professional use in Georgetown, Delaware.

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Freestanding Commercial Building with BG Zoning
Freestanding Commercial Building with BG Zoning

1973 Bay Road, Milford, DE 19963

$949,000
14,400 sqft

Fully leased freestanding building on high-visibility Bay Road, zoned BG for retail, office, and medical uses.

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Renovated NNN Commercial Property
Renovated NNN Commercial Property

105111 NE FRONT STREET, Milford, DE 19963

$1,990,000
12,422 sqft

Recently renovated property with two established tenants under NNN lease terms.

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Manufacturing Property with Warehouse
Manufacturing Property with Warehouse

7494 Federalsburg Road, Bridgeville, DE 19933

Contact for pricing
240,258 sqft 13.48 AC lot

M-1 manufacturing facility combining warehouse, repair, machine shop, office, and residential improvements across a multi-building campus.

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Milford Landmark Professional Brick Building
Milford Landmark Professional Brick Building

125 CAUSEY AVENUE, Milford, DE 19963

$789,000

Three-story professional building with high visibility and flexible floor plans.

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Freestanding Office Near Ocean View Beach Club
Freestanding Office Near Ocean View Beach Club

25 Beach Club Avenue, Ocean View, DE 19970

$450,000

Standalone office positioned at the entrance to a 300-unit planned community in eastern Sussex County.

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High-Visibility Retail Office Building
High-Visibility Retail Office Building

18451 Sussex Hwy, Bridgeville, DE 19933

$1,499,000

A 3-acre site with a block building, HVAC, concrete floors, and ample parking along a heavily traveled corridor.

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Freestanding Office Building
Freestanding Office Building

1310 Bridgeville Highway, Seaford, DE 19973

Contact for pricing
2,200 sqft 0.51 AC lot

Flexible professional layout with private parking, highway access, and an electric scrolling sign marquee.

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Freestanding Two-Story Office Building
Freestanding Two-Story Office Building

108 N Bedford St, Georgetown, DE 19947

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1,140 sqft 0.20 AC lot

A freestanding commercial building with an established office-use history near Georgetown’s central Circle.

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Multi-Building Mixed-Use Campus
Multi-Building Mixed-Use Campus

9 Park St, Milton, DE 19968

Contact for pricing
21,860 sqft 1.98 AC lot

Five interconnected commercial buildings on a 1.98-acre site offer flexible space for a single user or multiple tenants.

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Well-Maintained Office Building
Well-Maintained Office Building

543 N Shipley St, Seaford, DE 19973

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5,912 sqft

A well-maintained 5,912 SF office building with ample parking and a flexible floor plan for multiple office configurations.

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Two-Building Professional Office Property
Two-Building Professional Office Property

20793 Professional Park Blvd, Georgetown, DE 19947

Contact for pricing
50,200 sqft

The property houses medical, banking, behavioral health, and public-service tenants.

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Stone Creek Business Park Opportunity
Stone Creek Business Park Opportunity

10252 Stone Creek Drive, Laurel, DE 19956

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Office, retail, and warehouse flex space for sale.

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Single-Tenant Medical Office Space
Single-Tenant Medical Office Space

9115 Antique Alley, Bridgeville, DE 19933

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Medical office property occupied by Fresenius Kidney Care under a long-term lease.

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Mixed-Use Office-Warehouse Property
Mixed-Use Office-Warehouse Property

105-107 Lincoln Avenue, Delmar, DE 19940

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Office, warehouse, buildable lots, and a house create a varied commercial property configuration.

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Office Space in Milford Innovation
Office Space in Milford Innovation

Bucks Rd, Milford, DE

Contact for pricing
9,439,888 sqft 210.00 AC lot

Office space available for sale or lease in Milford, Delaware.

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Sussex County, DE Office Buildings Market Trends and Statistics

Explore 25 office buildings for sale in Sussex County, DE, showcased through 25 active listings on our real estate platform. These investment opportunities span a total of 9,826,367 square feet of properties for sale, with an estimated market value of $13,236,899.

Sale prices for office properties in Sussex County, DE start at $280,000, averaging $945,492, and reaching up to $1,990,000 — offering options for a variety of budgets and business needs. Daily updated analytics ensure you stay ahead with the latest data and market trends.

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