He was a driving force behind the foundation of Håndværkerstiftelsen as a charity providing affordable accommodation for old craftsmen and their widows in difficult circumstances.

Thomas Blom and his brothers Peder (1882–1807), Christian (1774 – 7 November 1811) and Hans Ole (1780–1832) were all trained as masons under Jens Martin Quist.

[1] half a year later, it was used for acquiring Bloms Enke & Sønner's first lot at the corner of Sankt Peders Stræde and Teglgårdsstræde.

From then on, Bloms Enke og Sønner started commenced a practice of building one house per year.

The houses were each year completed in late autumn and the winter and spring months were then spent working on the interior.

The second eldest brother Christian had married his widow around half a year later and had by 28 March 1808 withdrawn from the family firm.

[1] In the autumn of 1809, Blom bought his mother's and younger brother's shares of the still empty plots in Kronprinsessegade.

Ole Blom was paid up front while his mother received a mortgage deed of 6,000 rigsdaler.

On 6 October, with reference to his 10-year long experience as a builder, he applied the magistrate for permission for qualification as master mason without having to produce a masterpiece.

The Masons' Guild and Danske Kancelli was consulted on the matter and the application was ultimately rejected.

In consisted of creating the plans for the construction of a corner building for a pharmacy, complete with an advanced laboratory, as well as a specified family.

Normally, applicants were also tasked with building a complicated vault structure but here Blom seems to have received a dispensation.

[1] Blom joined the reorganized Copenhagen Fire Corps in February 1810 as was normal for the city's masons, carpenters and smiths.

Blom was active in the work for establishing Håndværkerstiftelsen as a charity providing free accommodation for old craftsmen and their widows in difficult circumstances.

They had the children Johanne Emilie (1812–96), Peter Ludvig (1814–50), Julius Andreas (1815–1900), Sigvard August (1816–1900), Ida Wilhelmine (1818–96), Carl Waldemar (1819–c.

He chose the view down Dronningens Tværgade from Rosenborg Castle Garden as the motif for his ceremonial target.