DUBAI - Sales of homes in Dubai worth $10 million or more rose 6% in the first quarter versus last year, an industry report showed on Tuesday, as demand from the international ultra-rich for homes in the emirate showed little sign of abating.

A total of 105 homes worth an overall $1.73 billion were sold from January to March, up from around $1.6 billion a year earlier, according to property consultancy Knight Frank.

Activity was dominated by cash buyers, with palm tree-shaped artificial island Palm Jumeirah the most sought-after area, accounting for 36.3% of sales by total value, followed by Jumeirah Bay Island and Dubai Hills Estate.

Home to the world's tallest tower, the United Arab Emirates' Dubai is seeking to grow its economy through tourism, building a local financial centre and by attracting foreign capital, including into property.

Last year, Dubai ranked first globally for number of home sales above $10 million, selling nearly 80% more such properties than second-placed London, according to Knight Frank. The city also bucked the trend of falling luxury prices seen in cities like London and New York last year, posting double-digit gains, Knight Frank said in February.

"The level of deal activity in Dubai continues to strengthen, particularly at the top end of the market, where the near constant stream of international high-net-worth-individuals vying for the city's most expensive homes persists," said Faisal Durrani, Knight Frank's head of research for Middle East and Africa.

Durrani told Reuters Dubai was aided by the relative affordability of its luxury homes, where well-heeled buyers can purchase about 980 square feet of residential space for $1 million, "about three or four times more than you would get in most major global gateway cities".

The strong demand suggests many international investors are acquiring Dubai property for second homes rather than "constant buying to flip", he said.

(Reporting by Federico Maccioni Editing by Tommy Reggiori Wilkes and Mark Potter)