Hearn Insulation & Improvement
General contractor in Baltimore, MD 21229
About this company
Hearn Insulation & Improvement is listed as a general contractor at 3121 Lohrs Ln in Baltimore, Maryland, in Baltimore County. It is one of 12 general contractors in ZIP 21229.
Other construction companies nearby
Jones Enterprise II3330 Frederick Ave, Baltimore
0.3 mi(410) 346-2600
Hayford Builders508 S Caton Ave, Baltimore
0.4 mi(410) 362-3812
All Construction Services113 S Culver St, Baltimore
0.5 mi(202) 270-5537
Blind Industries and Services of Maryland2901 Strickland St, Baltimore
0.6 mi(410) 233-4567
C.L. McCoy Framing Co. Inc201 S Smallwood St, Baltimore
1.0 mi(410) 945-0014
Housing market around ZIP 21229
Figures describe the local area, not this company.
Typical home value$170,000−5.0% past year · +72% in 10 years
Typical rent$1,528−0.3% past year
12-month value outlook0.0%Roughly flat
New homes permitted, 2025543Baltimore County
Days to sale agreement16Baltimore metro · 14 a year ago
Listings with a price cut30.2%Baltimore metro
Sale price vs list100.1%Baltimore metro
New construction sales122Baltimore metro, Aug · −37% from last year
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: Baltimore County permitted 543 new homes in 2025, including 289 apartment units. 6% of the homes in this ZIP were built since 2000.
Local figures are estimates from public records and Zillow housing data, updated regularly.