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Sonder Plymouth

Chicago, United States

Built 1899 · Last completed renovation 1945

Sonder Plymouth in Chicago was last renovated in 1945, and originally built in 1899. Its HotelChrono freshness score is 0.5/10 — every date linked to a cited source.

HotelChronoSourced & VerifiedLow confidenceLast verified: 21 Aug 2026How we verify →Report an error

Data check

  • · Based on a weak source — confidence capped until verified

Renovation forecast · estimate

Likely due for renovation now

Past its typical ~8-year renovation cycle. A model estimate, not a sourced fact.

Renovation Radar →

Location

Satellite view · Chicago, United States

Timeline

  1. 1899

    Plymouth Building completed (original structure)

  2. 1945

    Building adapted for La Salle University's Extension; neo-gothic facade added

  3. 2018

    Adaptive reuse renovation by Sonder; conversion to hotel accommodations

How this score is computed

Chrono Score v1.1deterministic · reproducible · pure freshness, never mixed with stars
# sourced: last completed renovation in 1945
100 − 3.5 × 81 years = -183 → clamped to 5
= 0.5 / 10 · Tired

Every figure here traces back to the sourced renovation year above — no hidden weighting, no black box. Recompute it yourself. See the full methodology →

What changed in the 1945 renovation

Building adapted for La Salle University's Extension; neo-gothic facade added
Its neo-gothic facade wasn't added until 1945, when the building was first adapted to house La Salle University's Extension.source · retrieved 2026-08-21

Scope is quoted verbatim from the cited source — we never guess what a renovation covered.

Facts

Stars

3★

Built

Sourced

1899

Last completed renovation

Sourced

1945

Sources

Our iron rule: no quote, no data. Every date links back to the exact sentence it came from.

Weak source · renovation_started 2018weight 0.50 · retrieved 2026-08-21view source →

In Chicago, Sonder is helping developers renovate historic properties that will serve the city for years to come.

Weak source · Renovation 1945weight 0.50 · retrieved 2026-08-21view source →

Its neo-gothic facade wasn't added until 1945, when the building was first adapted to house La Salle University's Extension.

Weak source · Built 1899weight 0.50 · retrieved 2026-08-21view source →

In 1899, in the wake of the Chicago fire, an eleven-story masonry loft building in the Loop, known as the Plymouth, was completed.

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Frequently asked

When was Sonder Plymouth built?+

Sonder Plymouth (Chicago, United States) was built in 1899.

How old is Sonder Plymouth?+

Sonder Plymouth is 127 years old — it was built in 1899 and last renovated in 1945. Age measures the building; the Chrono Score measures how fresh it feels today.

When was Sonder Plymouth last renovated?+

Its most recent completed renovation was in 1945.

What is the Chrono Score of Sonder Plymouth?+

Its Chrono Score is 0.5/10 (Tired) — a pure freshness metric, separate from its 3-star rating.

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