A pergola will obstruct light into the structure. What is the structure used for? How do you plan to use the deck for? Eating? Sitting? etc? Plan the activities and the furniture you'll need and draw up a floor plan. Floor plans are important outside & inside. The steps to the deck from the lawn are a little too abrupt. Needs a transition. Consider adding cement pavers to the grass, not as an extra patio but for a nicer transition design.

My ex-husband and I had an issue with a large window that looked out over a sidewalk where people were constantly walking by and looking directly into our living room. We solved the problem by using window film that was one-way so we could see out but it was like a mirror if anyone tried to look in. There are other varieties as well. We still got all the sunshine and light but didn't need to worry about whether or not the neighbors could see me watching tv in my nightie on a sick day...It also meant the door to door salesmen couldn't look in and see that I was home when I didn't answer the door. http://www.gilafilms.com/en/privacy-window-film.aspx#.VOuUBS5vksQ

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Like your house! I think the verticals in the window on the left are vertical blinds - get rid of these - they are very dating. Paint the horizontal safety bars to match your other window frames. I think the house just lacks privacy - and this then necessitates curtains and blinds at all the windows, giving the house a closed off look. I would get rid of all the very solid and 60s era conifer shrubs and replace with softer planting and one or two taller trees. Perhaps a fence or hedge to provide privacy so those windows could be opened up to the sun and garden. Or you could plant a row of spaced standard trees (fluffy heads on trimmed trunks) (eg robinia, or a weeping standard poplar or willow) you'd only need about 5 along the street frontage, creeper round that letterbox, a few pretty plants next the house. Then open the blinds and curtains. You could add a screened courtyard outside the glazed area on the left. Talk to your local garden shop for ideas. I cant tell whether the walls are brown brick or brown Summerhill stone (thats those rough concrete bricks, also very 60s). My house is Summerhill stone and has been painted cream - looks fine and certainly removes the 60s look. Hope this gives you some ideas - good luck with your new house.