Basic
$98 – $267 each
Cat 3 phone wire fished to a low-voltage ring in the wall, single RJ11 jack on a white flush plate, dial tone tested

Photo: Robert Stinnett · CC BY 2.0 · Source
Add one telephone (RJ11) wall jack with new phone wire run from the existing demarc or junction to the jack in a finished wall.
Install Telephone Jack in Washington, District of Columbia typically costs $115 to $314 each as of 2026. Prices reflect local labor and material rates. Use our calculator below for a detailed, ZIP-code-adjusted estimate.
Prices in Washington are 5.0% higher than the national average for install telephone jack.
National average: $110 – $300 each
$98 – $267 each
Cat 3 phone wire fished to a low-voltage ring in the wall, single RJ11 jack on a white flush plate, dial tone tested
$115 – $314 each
Cat 5e cable fished to a low-voltage ring, RJ11 keystone jack punched down in a white plate, line tested
$144 – $392 each
Cat 6 cable fished in the wall, RJ11 keystone jack in a white plate, both ends labeled at the demarc and the jack, line tested
| Component | Category | Price Range | Unit |
|---|---|---|---|
| Materials | material | $52 – $142 | each |
| Labor | labor | $41 – $109 | each |
| Supplies & Other | supplies | $14 – $38 | each |
| Equipment & Disposal | equipment | $9.24 – $25 | each |
Surface-mount telephone jack box with a black cable on a painted wall
Photo: Omegatron · CC BY-SA 3.0 · Source
Find a pro to do thisBuildX Pro researches and reviews the national price range for Install Telephone Jack, then adjusts it to your ZIP code for local labor and material costs using the public data below. Last checked Nov 2026.
Connect with local install telephone jack contractors in Washington for personalized quotes based on your specific project.