CTI Underground
General contractor in Monrovia, MD 21770
About this company
CTI Underground is listed as a general contractor at 12014 Weller Rd in Monrovia, Maryland, in Frederick County. It is one of 12 general contractors in ZIP 21770.
Other construction companies nearby
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1.4 mi(240) 454-4126
Charles Cooley Stonework3841 Saint Clair Ct, Monrovia
1.5 mi(301) 482-2555
Willow Tree Construction11302 Scenic View Ct, Monrovia
1.5 mi(240) 674-4065
The Master's Finish Inc.4108 Larson Ln, Mt Airy
2.2 mi(410) 440-6360
Amish Customs13109 Old National Pike, Mount Airy
2.3 mi(301) 607-8284
Housing market around ZIP 21770
Figures describe the local area, not this company.
Typical home value$653,000+0.4% past year · +54% in 10 years
12-month value outlook+0.2%Roughly flat
Days to sale agreement19Washington metro · 17 a year ago
New homes permitted, 20251,168Frederick County
Listings with a price cut29.4%Washington metro
Sale price vs list99.7%Washington metro
New construction sales489Washington metro, Aug · −24% 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: Frederick County permitted 1,168 new homes in 2025, including 354 apartment units. 37% of the homes in this ZIP were built since 2000.
Local figures are estimates from public records and Zillow housing data, updated regularly.