Street Scene MOC Tutorial: From Foundation to Roof

Modular street scenes are one of the most addictive things you can build with bricks. Each three-storey building is a puzzle piece: finish one and you immediately want the next, until a whole miniature street is sitting on your shelf. The problem for first-timers is scale — a standard street building runs to a thousand pieces or more, and it is not obvious where to start. This tutorial breaks the build into five stages — foundation, ground floor, facade, roof, and module connection — so you always know which layer you are working on and why it has to be solid before the next one goes on.

Step 1: The Foundation — Where All Stability Starts

The base decides whether the whole building ends up crooked. For a standard modular street building, set the footprint at 32x32 studs (or 16x32) so it can later line up with official street sets. Fill the entire footprint with 2x4 plates to level it, then stand a ring of 1x2 bricks around the edge to create a recessed rim. Add a few technic pieces or holed elements around the perimeter as connection points for neighbouring buildings.

The foundation has to be packed tight and dead flat, because every floor above it carries load down through it. Cut corners here and every layer you add will lean with it.

Step 2: Ground Floor — Function Zones Set the Layout

The ground floor is the face of the building, and it usually holds the public function: a shop, a cafe, a flower store. Before you touch a brick, sketch the zones on paper or in MOC software — where the door goes, where the windows go, where the counter sits.

Build the skeleton before you fill the walls. Stand column pieces at the four corners and on both sides of the doorway, block out the window and door openings, then fill in with wall bricks. Doing it this way means every opening is correct the first time, which is far less work than carving a door out of a finished wall.

Keep the ground floor around eight bricks tall. Much taller and it feels hollow; much shorter and it feels cramped.

Step 3: Facade — SNOT Doubles Your Detail

The facade is the part of the build that eats the most time, and it is where SNOT (Studs Not On Top) earns its reputation. If you want horizontal banding, brick-course texture or panel seams on the outside wall, mount the plates studs-out or studs-sideways using 1x1 elements with bars or dedicated SNOT bricks. That single change lets you produce brickwork, tile cladding and metal panelling as distinct surfaces instead of one flat wall.

The facade can also step back: pull the second floor in by one stud from the ground floor and carry it on bracket pieces, and the building instantly gains depth. Leave a gap between the outer skin and the interior wall so window frames and signage elements can sit inside it rather than being glued to the surface.

Step 4: The Roof — The Finish Deserves Attention Too

The roof is the stage most builders rush. The common approach is flat: cap the top of the floor with plates, run a ring of 1x1 bricks around the edge as a parapet, then dress the top with rooftop props — air conditioning units, a water tank, an antenna. That is enough to make the roofline read as a real building.

For a step up, go pitched: use slope bricks falling away from the centre to both sides, interlock the two slopes so they hold each other, and add a chimney and vent. Whichever route you take, the roof must be removable. Build it as a separate layer so you can later rework the interior or add lighting without demolishing the building.

Step 5: Connecting Modules — Turning Buildings into a Street

The whole point of modular street scenes is that the modules swap and join. Pre-install connectors on all four sides of each foundation: 2x2 elements with holes plus technic pins is the usual solution, or hinge pieces acting as clasps so two buildings sit flush against each other.

Two things matter when you join them. First, the foundation height of adjacent buildings has to match exactly. Second, the pavement must run continuously — lay 1x2 tiles across the gap between the two buildings so the sidewalk reads as one unbroken surface. Once several buildings stand in a row, corners and intersections form on their own.

Common Failure Points to Avoid

Three mistakes catch almost every beginner. An unlevel foundation that leaves every floor above it leaning. Walls finished before anyone remembered to leave a door and window opening. A roof built permanently shut, so any later interior change means stripping the whole building.

The core logic of this tutorial is simple: skeleton first, walls second, detail third — and every stage should leave an interface for the next one. After the first building is done you will notice the appeal was never the finished model. It is the question of what goes next to it. For inspiration, browse the street scene instructions in the BrickPlans (brickplan.cn) community, and the BrickPlans blog has more hands-on modular building technique — reading and building at the same time is the fastest way to improve.