Used and loved by millions
Since I tried Ludwig back in 2017, I have been constantly using it in both editing and translation. Ever since, I suggest it to my translators at ProSciEditing.

Justyna Jupowicz-Kozak
CEO of Professional Science Editing for Scientists @ prosciediting.com
under one roof
Grammar usage guide and real-world examplesUSAGE SUMMARY
'Under one roof' is a correct and usable phrase in written English.
The phrase means that two or more people or things are situated together in the same place or under the same circumstances. For example, you can use the phrase like this: "All my extended family lives under one roof, which can be hectic at times."
✓ Grammatically correct
News & Media
Science
Alternative expressions(20)
in the same building
in the same place
within the same establishment
all together
at the same address
in close proximity
centrally located
under the same eye
under one condition
within the same framework
under one umbrella
brought together
under one year
under the same umbrella
under the same deal
under the same scrutiny
under the same sort
under the same theme
under the same protocol
under the same family
Table of contents
Usage summary
Human-verified examples
Expert writing tips
Linguistic context
Ludwig's wrap-up
Alternative expressions
FAQs
Human-verified examples from authoritative sources
Exact Expressions
58 human-written examples
Banks should not have multiple activities going on under one roof with inherent conflicts of interest.
News & Media
There are now ten of them living under one roof, surviving on food parcels from UNRWA.
News & Media
All under one roof, is verging on the fabled.
Science
"The Chinese are very big on three generations under one roof.
News & Media
ON YOUR OWN Ngee Ann City on Orchard Road has more than 130 shops under one roof.
News & Media
On one memorable Sunday, all three were played simultaneously under one roof.
News & Media
Gateway puts all that under one roof".
News & Media
"Having all these pieces under one roof will be extraordinary".
News & Media
Understandably, he wanted the work under one roof.
News & Media
I grew up with three generations under one roof.
News & Media
Besides, how many Starbucks do you need under one roof?
News & Media
Expert writing Tips
Best practice
Use "under one roof" to emphasize the convenience or efficiency of having multiple services, departments, or generations together in a single location. For example, "The new community center brings healthcare and social services under one roof."
Common error
Avoid using "under one roof" solely for physical proximity if the intention is to convey shared responsibilities, goals, or circumstances. "In the same team" or "collaboratively" could be better fits.
Source & Trust
87%
Authority and reliability
4.6/5
Expert rating
Real-world application tested
Linguistic Context
The phrase "under one roof" primarily functions as an adverbial phrase, modifying a verb to indicate location or circumstance. As Ludwig AI suggests, it indicates that people or things are situated together in the same place or under the same circumstances.
Frequent in
News & Media
66%
Science
17%
Formal & Business
8%
Less common in
Academia
0%
Wiki
0%
Reference
0%
Ludwig's WRAP-UP
The phrase "under one roof" is a common and grammatically correct prepositional phrase used to describe situations where multiple people or things are located in the same building or managed by the same entity. Ludwig AI confirms its correct usage and explains its meaning. Predominantly found in News & Media, it serves to emphasize the convenience, consolidation, or efficiency of having diverse elements in a single location. While generally neutral in register, it is crucial to understand its implications beyond mere physical proximity. Related phrases like "in the same building" or "consolidated in one location" can be used for semantic variation. With an expert rating of 4.6, it’s a solid and versatile phrase for various writing contexts.
More alternative expressions(6)
Phrases that express similar concepts, ordered by semantic similarity:
in the same building
Focuses specifically on the physical co-location within a single structure, lacking the broader implication of shared circumstances.
in the same place
A more general term indicating shared location, without specifying the type of structure.
within the same establishment
More formal and specifically relates to businesses or institutions sharing a location.
in a shared location
Emphasizes the communal aspect of the space.
housed together
Focuses on the aspect of providing shelter or accommodation in a single place.
all together
Indicates being in a group in one location.
at the same address
Refers to a specific, identifiable location.
in close proximity
Suggests nearness but does not necessarily imply being in the same building.
centrally located
Highlights the convenience of a single location for multiple functions or people.
consolidated in one location
Implies that different elements are brought together in a single space
FAQs
What does "under one roof" mean?
The phrase "under one roof" means that people or things are located in the same building or place. It can also imply that different entities are combined or managed together.
How can I use "under one roof" in a sentence?
You can use it to describe families living together, like "Three generations of our family live "under one roof"". It can also describe businesses consolidating services, such as "The company is bringing all its departments "under one roof" to improve efficiency".
What are some alternatives to saying "under one roof"?
Depending on the context, you could use phrases like "in the same building", "in a shared location", or "consolidated in one location".
Is it correct to say "under the same roof" instead of "under one roof"?
While "under the same roof" can be used, ""under one roof"" is more common and generally preferred, particularly when emphasizing unity or consolidation.
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Table of contents
Usage summary
Human-verified examples
Expert writing tips
Linguistic context
Ludwig's wrap-up
Alternative expressions
FAQs
Source & Trust
87%
Authority and reliability
4.6/5
Expert rating
Real-world application tested