11th February 2013 12:04
The European champion from Helsinki produced a season's best of 2.31m to triumph and tick off another box in a career that he has turned around in style.
He had said beforehand that he was aiming to make his mark and he did.
'I've never had the indoor title so that was my target today,' said Grabarz, 25, who has turned his life around in some style.
Having lost the financial support of his national lottery funding, he proved his worth by winning the gold medal at the European Athletics Championships in Helsinki last summer and then took bronze in the Olympic Games in London.
Though he is likely to need to jump higher to win at the European Athletics Indoor Championships in Göteborg, he knows there is more in the tank.
He tried to show that by skipping the next heights and going for 2.39m which would have been the best in the world this year but failed to clear it.
Grabarz said: 'It wasn't too bad but I was just running too fast, so it was the same story as always.
'It was only my second competition, so to be jumping that high is pretty good.
'The 2.39m attempts were good. I am sure I will get told off by my coach for running too fast but that's a positive problem.'
If he wins in Sweden, he will be only the fifth man to hold the European titles indoor and out at the same time.
Grabarz was far and away the best in a field where Italian guest Marco Fassinotti was second with 2.22m on count back from Britain's Allan Smith.
The two-day meeting had started in style with a brilliant triumph for Holly Bleasdale in the pole vault.
Bleasdale, 21, climbed to the top of the world rankings with victory in 4.77m as she won her third UK indoor title to book her place at the European Athletics Indoor Championships.
She won bronze at the World Indoor Championships in Istanbul last year and even challenged 4.90m in Sheffield.
Bleasdale said: 'I was really happy when I cleared 4.77m on my last attempt, I didn't quite hook things up how I'd like to but I can't complain with 4.77m and I know that once I hook everything up I'll be in a good place.'
'It gives me a lot of confidence, I have a few more competitions now and every time I compete I become stronger.
'I can put all the things I am doing in training into the competitions and I am getting better at that as I compete.
'I am in a really good place. Training is going well and everything seems to be slotting into place, so I just need to fine tune things really.'
Asha Philip reached the semi-finals at the World Indoor Championships and produced a superb run to win the 60m here.
Phillip's victory in 7.15 was a stadium record and the third-fastest British time by a Briton as she retained her title ahead of Annabelle Lewis in 7.33 and Anyika Onuora in 7.37.
She said: 'I'm so happy that I've managed to time my championships perfectly. I sometimes peak in the semis and this time I said I was going to relax, then go hard in the final, and that's what I did.
'I've been working my socks off because I've got such a bad history of injuries, breaking my leg and so on, so it feels great to have come out and run as fast as I did. I'm happy that I'm on top of my game.
'I am going to go to the Euros and I'm going to try to aim for a medal.'
In the absence of 2009 European champion Dwain Chambers, who missed the trials after an injury tweak and is hoping for a wildcard place in the team, Olympic 100m semi-finalist James Dasaolu edged further inside the European qualifying mark with victory in the 60m final in a time of 6.58.
It was a personal best and he said: 'I'm really pleased to book my place for Göteborg.
'I want to get a medal at the European Indoors. I'm going to have to go on the lower side of 6.50 but that's my goal.'
Eilidh Child broke the Scottish 400m record with a run of 52.06 in the heats before winning the final in 52.13 and Nigel Levine won the men's event in 46.73, a season's best time.