Who Builds a House
A house starts as a conversation
Before there is a single wall, there is a family with a problem to solve. Maybe they have outgrown an apartment. Maybe one parent works from home now. Maybe a grandparent is moving in and cannot climb stairs. The people with the need are the client, and everything that follows exists to answer their need.
Four jobs, one house
| Who | What they are responsible for | The question they keep asking |
| Client | Deciding what the house must do, and what it can cost | "Will this work for how we live?" |
| Architect | Turning the client's needs into a design, then into drawings a builder can follow | "What should this house be?" |
| Structural engineer | Making sure the design stands up — sizing beams, headers, footings, and the roof for the loads it will carry | "Will it hold?" |
| Builder (general contractor) | Building exactly what the drawings say, on time and on budget, with electricians, plumbers, and framers working under them | "How do we build this?" |
A fifth person works for the town, not the family: the building inspector, who visits the site to check that the work follows the building code — the rules that keep a house safe. You will meet the inspector again in a later unit.
The architect's questions
An architect does not start by drawing. They start by asking. A good first meeting sounds like this:
That last question shapes every other one. A larger house costs more to build, more to heat, and more in taxes. Most design decisions are really decisions about where the money goes.
From questions to a brief
The answers get written down as a design brief: a short, plain statement of the problem the house has to solve. "A single-story home for a family of four, three bedrooms, two bathrooms, a kitchen open to the living room, on a flat quarter-acre lot, for under a set budget." Written details about materials and quality — the kind of windows, the flooring, the roofing — go into the specifications. Together, the brief and the specs are the target the architect draws toward.
Why it goes around in a loop
The first drawing is never the last one. The client looks at it and says the kitchen is too small, or the bedrooms should be farther from the living room. Those comments are feedback, and they send the architect back to the drawing. Engineers call this a system: the needs and the budget go in, drawing is the process, plans come out, and feedback improves the next round. Two or three rounds is normal. That is not failure — it is the job.
Blueprint Lab is your drafting table
In this lab you are the architect. The Requirements panel is your client's brief: it lists the rooms, sizes, and features the design must have, and it checks them off as you draw. The 2D Plan is where you draw walls, doors, and windows. The other tabs — 3D, Elevations, Sections, Roof Plan — are the rest of the drawing set, built for you from the plan. The mini activity below gives you your first client.
🔤 Words to know
🛠 Mini activity: Meet your first client
- 1Wall toolTrace the dashed outline. Click the top-left corner of the dashes, type 30' and press Enter for the top wall. Then 24' for the right wall, 30' for the bottom, and 24' back up to close the loop.💡 Each new wall starts where the last one ended. The END badge means you are on a corner, and the loop closes when the last wall lands on the first corner.
- 2Door toolChoose Entry door in the panel on the right, then click the bottom wall where the dashed door is. That is the front door.
- 3Window toolClick the top wall twice, once on each dashed window. Those are the back windows for the bedroom and the bathroom.
- 4Wall toolDraw the two dashed inside walls. One runs across the middle: click the left wall where the dash starts, type 30' and press Enter. One runs from the top wall down to it: click the top wall at the dash, type 12' and press Enter.
- 5Room toolIn the Place room label panel on the right, pick LIVING ROOM, then click inside the dashed LIVING ROOM box. Do the same for BEDROOM and BATHROOM. Each label measures its room and shows the square feet under the name.
- 6Click the name box at the top left of the lab (it says Untitled Plan) and name this plan Practice Plan. A real project has a title on every sheet.
✅ Check: Who Builds a House
- Mini activity: every step needs its ✓.