Hawthorne Room Additions Toward the Garden
Hawthorne home additions that begin with the drop from the back door to the yard, which sets the new floor height and the step out to the patio.
Floor to grade at the back door is the first number we take on a Hawthorne visit. That drop tells us how high the new floor sits above the yard, whether the room goes on a slab or on a raised floor over a short stem wall, and how many steps, if any, lead down to the patio. It also shows how much the paving can slope away from the house to shed rain.
What the drop decides
A small drop lets the new room sit on a slab with its floor matched to the old one, and the patio can meet the door almost flush. A larger drop calls for a raised floor framed over stem walls, and the height of those walls comes straight from the reading. Steps, a landing or a deck sized to the threshold then bridge the difference outside. The same drop sets how much fall the paving gets so water heads toward the yard. Downspouts and hose bibs near the door are noted at the same time, since they may need to move.
What it leaves to others
Footing depth and header size come from other inputs. Footings follow the code minimum, the soil and the engineer's calculations, so a soil check may be needed before they are final. The header over the glass wall is sized for the width of the opening and the roof load it carries. We record the threshold reading on the first drawing sheet, so the designer and the engineer start from the same floor height, and the quote builds on it together with the roof edge and property line measurements. The City of Hawthorne building department reviews the set.
Room Additions in Hawthorne: what people ask
It can. The opening gets an engineered header, and each of its ends rests on a post with a footing below. The threshold height from the visit decides how the doors meet the patio, flush or with a step. Sliding and folding panels both suit, and low-E glass trims the heat a wide pane lets in.
A ground floor room takes yard and can meet the patio at floor level when the drop is small. A second story leaves the yard alone but adds weight, so an engineer checks the existing foundation and walls first. The lot and that check settle which one fits.
It has a line to itself, so the cost of joining new to old stays visible next to the room. That line covers the roof junction, the opening into the existing wall and the floor transition. Hidden problems at the join, such as worn wiring or damaged framing, are what raise it.
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