ADU Floor Plans 450 sq ft
At ADU Scale, we specialize in small space solutions that feel big on comfort, privacy, and functionality. Our 450 sq ft ADU floor plans are optimized to fit everything you need into a compact, beautiful footprint.
Starting from:
$ 350,000
Plan Overview
Efficient 450 sq ft ADU Plan for Compact Living
1 bedroom
1 bathroom
0 garages
1 story
Benefits
Why Choose a
450
Square Foot
ADU Layout
Smart Use of Space
Every inch is designed to work
Lower Building Costs
More affordable than larger ADUs
Ideal for One or Two People
Cozy without being cramped
Easier to Permit & Build
Faster approvals and simpler construction
How it Works
Steps to Build a
450
sq ft ADU
From concept to build, we walk you through every step of your custom ADU with clear guidance and personalized support.
01
Initial Consultation
Discuss goals, property, and ADU potential
02
Custom Floor Plan Design
Tailored 450 sq ft ADU floor plan just for you
03
City Permits & Approvals
We handle the paperwork and submissions
04
Site Preparation & Utility Planning
Get ready for a smooth build process
05
Construction & Quality Checks
Efficient build with high-quality finishes
06
Final Inspection & Move-In
Wrap-up, inspection, and ready to enjoy
Cost Estimate
A 450 sq ft ADU costs between $120,000 and $180,000. These ADUs are smaller than full-sized homes but still have everything you need. And they cost less than larger units, which can go over $250,000.
Get My Cost EstimateFAQ
Quick Answers
Can I build a 450 sq ft ADU in my backyard?
Yes, most Southern California lots allow it, with proper setbacks.
Is 450 sq ft big enough for a couple?
Absolutely. With the right layout, it works beautifully for two.
Can this mini ADU home be rented out or used as an Airbnb?
Yes, many homeowners use it for long-term or short-term rentals.
What features fit in 450 sq ft?
A full kitchen, bathroom, living area, and separate bedroom are all possible.
Ready to Build Your ADU Tiny Home?
Let’s bring your 450 sq ft dream to life - we’re here to help from start to finish.
More information
When it comes to creating a backyard retreat, a 450 sq ft ADU floor plan offers one of the most efficient options available. Whether you need a quiet home office, a rental unit, or a cozy ADU guest house, this ADU size gives you just enough space - without the high cost of a bigger build.
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