Project example: a 55-inch TV and soundbar on an interior partition in a west-side townhome — the plan, the steps and the price range

The scenario

Picture a three-story townhome built in the 2000s, one of a row of attached homes on a tree-lined street in a master-planned community. The living room is on the second floor and measures about twelve feet across. One long side is the wall shared with the next unit; the opposite side has a balcony door; a short interior wall at the head of the stairs is the only other wall long enough for a TV.

The household wants a 55-inch screen with a soundbar. The obvious wall is the shared one, because it is the wall facing the sofa, but a TV there would carry bass into the neighboring living room, and the community's rules limit holes in shared walls. The interior partition at the head of the stairs is shorter and slightly off-center, which means the sofa has to angle a few degrees.

The walls are modern drywall over wood studs, and there is no plaster to worry about. The work is about rules and placement, not about old finishes.

What the job involves

1. The association's rules and the unit's papers are read first for anything about holes in walls, balcony and exterior surfaces and work hours, and the answer is saved with the unit's records.
2. A tape outline on the interior partition shows the screen, with a second strip just below it for the soundbar, and the installer checks the view from the sofa as well as from the stair landing.
3. A stud finder gives the first guess, a probe hole under the plate proves it, and a small inspection camera shows whether pipes, wiring or a firestop sit behind the chosen spot.
4. The tilting plate goes into two studs with lag bolts, a level confirms it, and the TV is hung and locked with its safety screw.
5. The soundbar bracket is fixed into the same studs a few inches below the TV, so the bar and the screen share a center line.
6. A single raceway painted the wall color carries the HDMI and power cords to the outlet at the foot of the partition, and nothing is cut into the shared wall.

Hardware and materials

• Tilting mount rated for the TV's weight
• Lag bolts sized for wood studs through drywall
• Separate soundbar bracket with two fixing points
• Stud finder, laser line, inspection camera
• Paintable raceway with a snap-on cover

Add-ons often paired with this job

• Hide the wires inside the wall — +$95–$155. A rated in-wall kit on the interior partition only, never on the wall shared with the neighbor.
• Full-motion (articulating) mount — +$30–$50. An arm lets the screen turn toward the stair landing when the room fills up.
• Take down an existing TV first — +$40–$80. Taking down a set already on a bracket is a separate charge.

Why it is done this way

In condos and townhomes the wall between two homes is often a fire-rated separation wall, and CC&Rs often limit holes in it. A mount screwed into it, and above all a recessed box or an in-wall cable run cut into it, can affect that wall. An interior partition is the usual answer, and it is the association's rules, not the installer's opinion, that decide.

A TV on a shared wall also carries sound and bass into the neighbor's home, and many owners choose another wall for that reason alone. The soundbar goes on the same partition as the screen, and a subwoofer, if there is one, sits against an outside wall.

The bar has its own bracket because a soundbar is a separate weight with its own fixing, and hanging it from the TV's bracket is a way of loading a plate that was not rated for it.

Wires hidden inside the partition are possible with a rated kit, but the shared wall is the one place nobody should run one, so the default in this scenario is a surface raceway.

What would change the price

• The partition turns out to hold a steel stud or a firestop, so the fasteners or the position change.
• The association asks for notice or set hours, and the visit follows them.
• A longer bar or a heavier TV needs a wider plate across two studs.
• A recessed outlet for hidden wiring is electrician work and is priced separately.
• Choosing a swing arm adds the full-motion line and longer bolts.