Isso trará de volta os totais por propriedade e tipo
SELECT PropertyID,
TYPE,
SUM(Amount)
FROM yourTable
GROUP BY PropertyID,
TYPE
Isso trará de volta apenas valores ativos
SELECT PropertyID,
TYPE,
SUM(Amount)
FROM yourTable
WHERE EndDate IS NULL
GROUP BY PropertyID,
TYPE
e isso trará de volta os totais das propriedades
SELECT PropertyID,
SUM(Amount)
FROM yourTable
WHERE EndDate IS NULL
GROUP BY PropertyID
......