He became just the second man in history to complete the Olympic "double double", after adding victory in the 5,000m in Rio on Saturday (August 20) to his earlier triumph in the 10,000m.
The former Feltham Community College and Isleworth & Syon School pupil was honoured after notching up the same double at London 2012 , with postboxes in Isleworth and Teddington, where he used to live, being painted gold.
He is also a freeman of the borough, along with the gold medallist Pete Reed, who lived in Chiswick , and there have been calls for him to be knighted after becoming Britain's most-decorated track and field athlete.
But what else in Hounslow could be turned gold in recognition of his incredible achievements?
Golden post office?
This seems like the obvious step up from a golden post box.
As well as heralding Mo's achievements, it would also help people find their nearest post office, where they will surely soon be able to pick up commemorative stamps honouring Team GB's golden boys and girls of Rio 2016.
The pond recently turned green, so why not turn it a more lustrous colour in honour of Mo?
The popular meeting spot has also been blighted by rubbish in recent weeks, so giving it a golden sheen might have the added benefit of restoring some civic pride and reducing littering.
Former Gillette factory?
The distinctive art deco building which was once home to the razor giant is already located along the so-called Golden Mile on the A4 in Brentford.
Mo has previously told how shaving his head has become a pre-race ritual, making this an even more apposite choice, though obviously other razor brands are available.
Given how much is already being spent on the Garden Bridge downriver, surely there's enough to spare for a new paint job on this west London crossing.
As well as honouring Mo, it would be a fitting monument to the achievements of Pete Reed, the double Olympic gold-medallist rower, who lived in Chiswick.
Hounslow Civic Centre?
Work has already begun on Hounslow Council's new glass and aluminium-fronted headquarters in Bath Road, but it's not too late for a minor alteration.
Turning one floor gold for each of Mo's four medals would make it even easier for residents to locate the council's new offices.
It would also serve as an inspiration for future generations of athletes from the borough to strike gold and see the other floors turned a matching shade in recognition of their success.
Wheelie bins were recently rolled out to homes across the borough , but they have not been universally welcomed, with their introduction even leading to a protest outside the council leader's home.
Turning them gold might help counter criticism about their appearance spoiling the look of some of the borough's smarter streets.
But it wouldn't do much to dampen the disquiet among those who already feel they're an unnecessary expense in a financially constrained climate.
The idea sounds less ridiculous when you consider a supermarket trolley was painted gold in recognition of Adam Peaty's success in the pool at Rio.
Brentford FC's new home?
The club already has the go-ahead for a new home in Lionel Road, Brentford, and additional steps were recently taken to secure the last of the land needed.
Turning the stadium, or at least part of the ground, gold would not only acknowledge Mo but would shine a light on one of the borough's other major sporting success stories.
It might even give players the extra belief needed to finally break into the Premier League, if they haven't already done so by the time they make the move from Griffin Park.
As if that weren't enough, Mo is a huge football fan and initially wanted to become a professional football player, before being convinced his real talents lay elsewhere.
The only drawback is that as an Arsenal fan he might not appreciate the gesture.
I know this is a bit of a contradiction in terms, and I'm also aware I'm showing my age as even white boards are being consigned to the history books.
But given Mo's past praise for his teachers, especially his old PE teacher Alan Watkinson , it would be nice to let them bask in his reflected glory.
If there are no blackboards left to turn gold at Feltham Community College or Isleworth & Syon School, perhaps the sports halls or PE kits would be another option.
New cycle superhighway?
There's been a long wait for the promised Cycle Superhighway 9 - a cycle path which was originally intended to run from Hounslow to Hyde Park.
Blue has been the traditional colour for the motorways of the cycling world, but turning this one gold when it's eventually completed would make it impossible for motorists to miss.