Fourplex Plans & Site Plans

A fourplex lives or dies on efficiency: four units, shared walls, shared systems, and a site plan that fits the parking without giving up rentable ground. Get it drawn around your lot and your loan.

Custom fourplex plans arrive permit-ready in about 2–3 weeks with per-unit floor plans, elevations, MEP layouts, a parking/site plan, CAD/DWG files and a cost estimate.

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Repeating-unit designParking/site plan includedCAD/DWG + cost estimate

Permit-ready~2–3 weeks

The repeating-unit advantage

The cheapest fourplex to build draws a single great unit and repeats it — mirrored left-to-right and stacked up-and-down. Repetition means your framers, plumbers and electricians do the same work four times, cabinetry and fixtures are bought in bulk, and the plan reviewer sees one unit type instead of four.

We design around that principle while still tailoring the building's face and site plan to your neighborhood and zoning.

What you receive

Dimensioned floor plans for every unit, plus exterior elevations and foundation/roof plans.
Electrical and plumbing layouts with four separately metered services and code-compliant fire separation.
A parking and site plan designed to your jurisdiction's ratio and setbacks.
Editable CAD/DWG files, 3D renders and an RSMeans-based cost estimate.
Unlimited revisions until you sign off.

Fourplex plan packages

Package	Turnaround	Best for & includes
Single fourplex	~2–3 weeks	One 4-unit building — repeating-unit floor plans, elevations, MEP, parking/site plan, CAD/DWG, cost estimate
Fourplex + garages	~3 weeks	Higher-rent markets — above plus detached or tuck-under garages
Repeatable fourplex	Custom quote	Multi-lot investors — a master design engineered to repeat across sites

Local engineering stamps available where required. All packages include unlimited revisions.

Get an exact number for your project

A designer prepares your full package with an RSMeans-based cost estimate — start the short brief.

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Frequently asked questions

How long do custom fourplex plans take?+

A full permit-ready fourplex set is typically ready in about two to three weeks, including revisions. Repeatable multi-lot designs are quoted per project.

Do fourplex plans include the parking layout?+

Yes. The site plan is designed to your jurisdiction's parking ratio and setbacks, because a fourplex that can't park its tenants can't be permitted.

Can I reuse the same fourplex plan on multiple lots?+

Yes — a repeatable master design is one of the best ways to scale. We tune one efficient design to repeat across your sites with minimal per-lot changes.

How much do custom fourplex plans cost?+

Far less than the 8–15% of construction cost a traditional architect charges. Start a brief for a fixed price based on your design and complexity.

Start your custom fourplex plan

Four units, drawn to build efficiently and to profit. Start the brief and a designer contacts you within 1 business day.