It looks like the location is probably not ideal for this plant. Unless it is one of the dwarf species which still get in the 5 foot wide and tall range, it will eventually be too large for that area. Additionally the roof overhang and lack of watering, plus it looks like there may be a decent amount of shade, could be causing the sparse growth of the plant. 

It could be struggling due to root issues as well. When it was planted if the root ball was container grown, do you know if it was loosened? If not the roots could be growing in a circular pattern from the shape of the container and eventually they would girdle or choke themselves, depriving the plant from water and nutrients. 

 Was the soil amended in that area? If it is poor draining or doesn't have enough organic content, that could be adding to the poor growth. 

Stressed plants tend to attract insects and we can see that the leaves are curling, most likely due to aphids. We can't zoom in on the photos to clearly see aphids, but if you uncurl a leaf you will probably see some small insects and their shed skins. Aphids can be various colors ranging from green, black, white, tan, grey and shades of red. Aphids aren't usually detrimental to plant health though, but can add to the stress with the other factors especially if the population is high.

Typically a strong spray of water on the plant will flush aphids off, but if they are curled up in the leaves it won't do much. Similarly the use of any contact insecticides won't have much affect if they are protected in the leaves. There are enough predators for aphids though, that  this initial population boom will start to reduce as they find them and emerge in the warming weather. There are many generations of aphids through the growing season and the first early spring population tends to be the highest since many of the beneficial insect predators haven't emerged yet. The plant will put out new growth and it was either replace or cover the damaged leaves. The curled leaves may eventually turn yellow and brown and fall off.

If you can water the plant in the space, you will be helping with root growth. With the roof overhang and periods of drought we had last year, it is probably struggling from lack of soil moisture. You can follow out Watering Trees and Shrubs guidelines to learn more. Make sure you feel the soil below the mulch before watering. 

If the plant doesn't start to fill in, you may want to consider something more suitable for that area and we are happy to help with recommendations. 

Emily

Thanks so much for this helpful advice.

You're welcome!