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
could have built
Grammar usage guide and real-world examplesUSAGE SUMMARY
The phrase "could have built" is correct and usable in written English.
It is typically used to express a possibility or hypothetical situation in the past regarding construction or creation. Example: "If we had more resources, we could have built a better facility."
✓ Grammatically correct
News & Media
Alternative expressions(15)
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
59 human-written examples
He could have built the gateway.
News & Media
Dombrowski, perhaps, could have built a stronger bullpen.
News & Media
The Blue Devils could have built off that.
News & Media
Perhaps so, but he could have built this place anywhere.
News & Media
"I could have built this for $850 million," he said.
News & Media
The police could have built a case despite her.
News & Media
CRS says it could have built 150 more had Israel not barred most wood imports.
News & Media
"With all the technology available today, they could have built a kiosk," Kendall said.
News & Media
In time, perhaps, he could have built a strong relationship with another management team.
News & Media
People seem to like the place.Walt Disney could have built his biggest theme park anywhere.
News & Media
We could have built on the North Side or the suburbs, but this is home".
News & Media
Expert writing Tips
Best practice
Ensure the context clearly indicates what "could have built" refers to, avoiding ambiguity. For example, specify what could have been built: "They could have built a school."
Common error
Avoid using "could of built" which is a common misspelling. The correct form is "could have built".
Source & Trust
89%
Authority and reliability
4.5/5
Expert rating
Real-world application tested
Linguistic Context
The phrase "could have built" functions as a modal verb construction expressing past possibility or potential. It indicates that an action (building something) was possible but did not occur. Ludwig confirms its grammatical correctness and common usage.
Frequent in
News & Media
100%
Less common in
Formal & Business
0%
Science
0%
Encyclopedias
0%
Ludwig's WRAP-UP
In summary, "could have built" is a grammatically correct and very common phrase used to express past possibilities that did not materialize. Ludwig AI confirms its standard usage in various contexts. It's frequently found in news and media, indicating hypothetical scenarios or missed opportunities. To use it effectively, ensure the context is clear and avoid common errors like "could of built". Consider alternatives such as "might have constructed" or "were capable of constructing" to add nuance to your writing. Understanding these aspects will help you leverage "could have built" with precision and clarity.
More alternative expressions(6)
Phrases that express similar concepts, ordered by semantic similarity:
might have constructed
This alternative uses "might" instead of "could", indicating a slightly lower degree of certainty or possibility.
were capable of constructing
This alternative replaces the modal verb with a phrase emphasizing the ability to construct.
would have been able to build
This alternative uses "would have been able", emphasizing the ability if circumstances had been different.
had the potential to construct
This alternative highlights the potential rather than the actual act of building.
could have erected
This alternative uses the word "erected" which can imply a more formal or significant construction.
were in a position to build
This alternative focuses on the circumstances or situation that allowed building.
had the opportunity to build
This alternative focuses on the availability of an opportunity to build.
could have assembled
This alternative uses the word "assembled" implying a construction made of different pieces.
were able to put up
This alternative is less formal and implies a simpler, quicker construction.
might have put together
This alternative is informal and implies that the construction is simple.
FAQs
How can I use "could have built" in a sentence?
Use "could have built" to describe something that was possible in the past but did not happen. For instance, "If they had secured funding, they "could have built" a community center".
What are some alternatives to "could have built"?
Depending on the context, you could use phrases like "might have constructed", "were capable of constructing", or "would have been able to build".
Is it correct to say "could of built" instead of "could have built"?
No, "could of built" is incorrect. The correct phrasing is "could have built". "Have" is often contracted to "'ve" in speech, which might lead to the error in writing.
What's the difference between "could have built" and "were able to build"?
"Could have built" implies a possibility that wasn't realized, while "were able to build" suggests the ability was present and the action was actually carried out or was certain to be carried out. For example, "They could have built a bridge, but they didn't get the permits" vs. "They were able to build the bridge after securing the permits".
Editing plus AI, all in one place.
Stop switching between tools. Your AI writing partner for everything—polishing proposals, crafting emails, finding the right tone.
Table of contents
Usage summary
Human-verified examples
Expert writing tips
Linguistic context
Ludwig's wrap-up
Alternative expressions
FAQs
Source & Trust
89%
Authority and reliability
4.5/5
Expert rating
Real-world application tested