autoconstruirse

To build oneself, literally (a house or structure someone builds with their own hands: se autoconstruyó la vivienda) or figuratively (a person shaping their own identity or career: se autoconstruyó como artista desde cero).

• La familia se autoconstruyó la casa en un terreno heredado. — The family built their own house on inherited land.
• Se autoconstruyó como artista sin ningún apoyo institucional. — He built himself up as an artist with no institutional support at all.
• El barrio se autoconstruyó poco a poco, sin planificación urbana. — The neighborhood was self-built bit by bit, with no urban planning.

Missing the strong connotation of "without outside help" that autoconstruirse carries — it's not just "to be built," it specifically flags that the builder and the beneficiary are the same person.