Claire WhitakerBy Claire Whitaker

Updated November 2026

This guide walks you through river oaks sofa and nesting tables assembly instructions from unboxing to a level, stable finished set. You will check the parts, attach the sofa frame and legs, build the nesting tables and fix the most common wobble problems before you move anything into place. Plan on about one to two hours with a helper for the sofa.

Before You Start: Check the Parts and Clear Space

Lay the sofa on a clean rug or a moving blanket so the finished surfaces and fabric are protected. Open every carton, then count the hardware against the parts list in the manual. Confirm you have the matching hardware bags before you discard any packaging, since many missing-part complaints trace back to a bag tossed with the cardboard.

Shopping for one? See our guide: Metal Round Nesting Tables Review: Features and Performance.

  • Phillips-head screwdriver and a cordless drill with a Phillips bit
  • Rubber mallet or a block of scrap wood
  • Tape measure and a small level
  • Soft cloth to protect finishes
  • A second adult for lifting the sofa frame

Step-by-Step: Assembling the Sofa

Start with the sofa frame in its upright position on the blanket. Insert each leg into its mounting bracket, then thread the bolts by hand before tightening. Hand-starting prevents cross-threading, which is the most common cause of stripped holes in flat-pack furniture.

  1. Attach the rear legs first, then the front legs, leaving every bolt slightly loose.
  2. Tighten the bolts in a diagonal pattern so the frame stays square.
  3. Fit the seat and back cushions last, after the frame is standing on its legs.

Checking the Frame Is Square

Measure the diagonal distance between opposite corners of the frame base. If the two measurements differ by more than a few millimeters, loosen the bolts and reseat the frame until they match.

Building the Nesting Tables

Nesting tables are usually the easier part of the job, but their small pieces are easy to mix up. Sort the parts by size before you start, and keep the largest table as the base for the others.

  1. Assemble the tabletop frame of the largest table and attach its legs or apron.
  2. Repeat for the medium and smallest tables, checking each one against the others for matching height.
  3. Place the finished tables side by side on a flat floor and confirm they sit at the same level before fully tightening all fasteners.

Final Leveling and Placement

Set the completed sofa and tables on the floor where they will live. Rock each piece gently. If one corner rocks, adjust the leg or glide on that corner by a quarter turn at a time until the piece sits flat. Floors are rarely perfectly level, so a stable placement matters more than a perfect spreadsheet of measurements.

Common Mistakes

  • Tightening one bolt fully before starting the others, which pulls the frame out of square.
  • Forcing a bolt that feels stuck instead of backing it out and rethreading it.
  • Skipping the level check, then blaming the table for wobbling on an uneven floor.
  • Leaving cushions unattached until after the sofa is moved, which strains the frame corners.
  • Discarding hardware bags with the packaging before the build is finished.
  • Cordless drill with Phillips bits: Speeds up the bolt-tightening step and reduces hand fatigue on a long build. View on Amazon
  • Small torpedo level: Makes the leveling check fast and easy to repeat after placement. View on Amazon
  • Furniture moving blanket: Protects the sofa fabric and tabletop finishes while you work on the floor. View on Amazon

FAQ

Do I need a second person to assemble the sofa?

Yes, in most cases. The frame is awkward to lift and hold square while you start the bolts, so a helper makes the job safer and more accurate.

What should I do if a hardware piece is missing?

Check the manual’s parts list and every hardware bag first, then contact the manufacturer with your model name and the missing part number. Do not substitute bolts of a different length, as they can strip threads or fail under load.

Why do my nesting tables wobble after assembly?

The most likely cause is an uneven floor or a leg that is not fully seated. Re-check each fastener and adjust the leg or glide on the low corner until the table sits flat.

Conclusion

With the parts checked, the sofa frame squared and the nesting tables leveled, your set should sit firm and look finished. If anything still feels loose after a day of use, re-tighten the bolts and recheck the floor. For more on choosing and placing nesting sets, see How to Style Nesting Tables: 7 Steps for a Polished Living Room (2026) and Nesting Coffee Tables Explained.

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Claire Whitaker

About Claire Whitaker

Claire Whitaker is part of our editorial team and reviews and edits our living-room tables guides, checking product details against manufacturer specifications and owner feedback.