Corner TV Mount Installation — Full-Motion Arm in the Corner
The only wall that works is the corner over the dresser, the stud finder gives three answers on the plaster, and the TV needs to swing toward the bed — a mounting job that is mostly carpentry.
JMB Builders does corner TV mount installation across the Twin Cities metro: a full-motion arm on the stud nearest the corner so the TV swings out to face the bed or couch, or a two-arm corner mount on blocking when the studs are wrong. We find studs on plaster and odd walls with test holes, set the height to clear a dresser, and drop the cords behind it. Priced per TV, quoted from a photo within one business day.
- Priced per TV, mount supplied or yours
- Studs found with test holes on plaster and odd walls
- Blocking added and patched when studs are wrong
- Quote from photos in 1 business day
- Licensed MN contractor BC809005
Corners are where TVs end up in bedrooms, offices and small living rooms, because the flat walls are taken by windows, closets and the bed. A full-motion mount makes a corner work: the plate goes on one wall near the corner, the arm folds flat when you are not watching and swings out to face the room when you are. The whole TV then hangs off one or two studs through a long arm, so the fastening is the job, not the mount.
Corner framing is not friendly. There is usually a stud right in the corner and a pair a few inches out, then a normal spacing after that, and on a plaster-and-lath wall a stud finder reads the lath as a stud every inch. We find the real framing with a magnet along the nail line and small test holes where the plate will cover them, and we lag into it. When the stud that is there puts the TV in the wrong spot, we open the wall, add blocking between the studs, patch the drywall and mount to the blocking.
Over a dresser the height matters as much as the corner. The bottom of the TV has to clear the dresser with the arm extended and swung, and the cords have to come down behind the dresser, not across it. We set it with you standing where you will watch from.
What you supply
- A photo of the corner from across the room, with the dresser or furniture in place
- The TV size and model, and the mount if you have bought one; we supply a full-motion or corner mount when you have not
- Where you will watch from, so the swing and the height are set for that spot
- Where the nearest outlet and the cable or streaming box will sit
What JMB supplies
- Stud location by magnet and test holes, so the lags go into framing every time
- A full-motion or two-arm corner mount rated for the TV when you do not have one
- Lags into the studs, or blocking added between studs with the drywall patched, primed and ready for touch-up paint
- Longer lags and a backer plate for plaster and lath, so the plate bears on the studs and not the plaster
- Cord management down the wall behind the dresser, or an in-wall power kit when the wall allows it
- The TV hung, leveled with the arm extended, and the swing stops set so it cannot hit the side wall
- Photos of the finished mount in your job folder
How it is priced: per unit
Quoted in writing from your photos within one business day. What moves the number:
- Single-stud full-motion arm vs. a two-arm corner mount that needs two walls or blocking
- Studs in the right place vs. blocking added and drywall patched
- Plaster and lath, paneling or a knee wall vs. standard drywall on wood studs
- TV size and weight, which sets the mount rating and the number of lags
- Cord route: surface behind the dresser vs. an in-wall power kit
- Whether the mount is supplied by you or by us
- Painting the patched area is quoted as a separate line, or leave it primed and touch it up yourself
One wide photo of the corner with the furniture in it and the TV size is enough to quote; tell us if the wall is plaster.
How long it takes
Corner mount on a good stud: one to two hours. With blocking added and the drywall patched: a half day, plus a return visit for paint if you want us to paint it.
How your project works
- 1
Send photos, get a written quote
Send three photos of the space and a sentence about what you want. You get a clear, itemized quote within one business day. We only come out to measure first when the job needs a tape measure — no pressure, no games.
- 2
Pick materials, or bring your own
We help you choose profiles and materials that fit the house and the budget, or match your existing millwork exactly — or you buy the door or trim yourself and we install it. Everything is confirmed before the crew is scheduled.
- 3
Clean, precise installation
The crew shows up on time, protects floors and furniture, and installs with tight joints and consistent reveals. Photos of the finished work go in your job folder.
- 4
Walkthrough and invoice
We walk the finished work with you. If anything is not right, we fix it before we call the job done. Then one invoice, paid by check or direct deposit — no card fees, no payment links.
Situations and options
Full-motion arm on the corner stud
The mount plate goes on the wall a stud or two from the corner and the arm swings the TV out to face the room. The simplest corner job when the framing lands where the TV should be, and the arm folds flat against the wall when the TV is off.
Two-arm corner mount on blocking
A mount with an arm on each wall that meets in the corner. Each arm needs solid framing behind it at the same height, which corners rarely give, so we usually open the drywall, add blocking between the studs on both walls, and patch.
Over a dresser or desk
Height set so the TV clears the furniture with the arm swung out, cords dropped behind the dresser to the outlet, and the swing stops set so the TV cannot swing into a lamp or the closet door.
Plaster, paneling and knee walls
Older houses with plaster and lath, paneled basements and cape cod bedrooms with short knee walls. We find the framing with a magnet and test holes, use longer lags through the plaster, and add a backer plate when the lath will not let the mount sit flat.
Ceiling mount in a corner
When neither wall has usable framing or the corner is all window, a ceiling mount on a joist or blocking hangs the TV in the corner from above. More common in a shop or a screen porch than a bedroom, but it solves a corner with no wall.
Corner TV Mount Installation — Full-Motion Arm in the Corner: questions, answered
Can you mount a TV in a corner?
Yes. The usual way is a full-motion mount with the plate on one wall near the corner and an arm long enough to swing the TV out to face the room. The plate has to land on a stud, and corner studs are rarely where the mount wants them, so we either shift the plate to the stud that is there or add blocking inside the wall and patch it. A two-arm corner mount that spans both walls is the other option when both walls have framing at the right height.
What kind of mount do you need for a corner?
A full-motion mount with a long enough arm to reach the corner and swing the TV to face the room, rated for the TV's size and weight. Single-stud full-motion mounts work when the stud is close to the corner; dual-stud mounts spread the load and are better for large TVs. A dedicated corner mount with two arms is made for the job but needs framing on both walls. Bring the mount you bought or we supply one sized to the TV and the corner.
How do you find studs in a corner or on a plaster wall?
A stud finder is unreliable near a corner, where the framing is doubled up, and useless on plaster and lath, where it reads every strip of lath. We run a magnet along the wall to find the nails in the lath or drywall, which line up on the studs, then drill a small test hole where the mount plate will cover it to confirm there is wood behind. On plaster we use longer lags so the plate bears on the stud, not on the plaster.
How high should a TV be mounted over a dresser?
High enough that the bottom of the TV clears the dresser top with the arm swung out to face the bed, and low enough that the center of the screen is near eye level from where you watch. In a bedroom that is usually a little higher than a living room, since you watch from a pillow. We hold the TV in place with you on the bed before we drill, because the right height depends on the room, not a chart.
Will a full-motion mount hold on one stud?
A single-stud full-motion mount rated for the TV will, when the lags are in solid wood and the TV is within the mount's weight limit. The arm puts a pulling load on the top lags when it is extended, so the lags have to be centered in the stud, not clipped through the edge. For a large TV or a long arm we prefer a mount that spans two studs or blocking that gives it a wider footprint. We say which from the TV size and the framing we find.
Where do the wires go with a corner TV mount?
Down the wall behind the TV and behind the dresser to the outlet, held in a cord sleeve so they do not show when the arm is extended. When the wall is drywall with no fire block in the way, an in-wall power and cable kit puts the outlet behind the TV and drops the cords inside the wall to a plate above the dresser. New outlets on a new circuit are added by a licensed electrician; we do the wall work and the cord management.
Recent JMB work, from our job log
59 installs recorded across 30 Twin Cities communities since Dec 2025. Window and door installs for homeowners and for the builders and dealers we sub for. Counts come straight from our job log; no customer names.
Get a written quote for this job
Three photos and a sentence is enough. You hear back within one business day. Or text the photos to 763-204-2099.
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Read morePage reviewed September 26, 2026 · JMB Builders LLC, MN license BC809005 · All tv mounting pages
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