How much does a detached Accessory Dwelling Unit (Second Suite) cost?

This is a difficult question to answer without knowing the specifics of your project.  ADU’s have the same budget realities as any new home… a second home in your backyard.

For a new, detached ADU in Minneapolis, MN, here are some rough guesstimates:

$150,000 - 250,000    Construction cost with a General Contractor
$18,000 - 35,000         Architectural fees (8-14% of construction costs)
$1500 - 3000               Structural Engineering fees
$1500 - 2500               Surveying
$4000 - 9,500              Utility connections to primary residence

TOTAL: $175,000 - $300,000

Again, this is a very generic budget with minimal detail.  Specific factors will influence the total cost, including: availability of contractors, quality of finishes and appliances, quality of the soil, or special factors requiring variances for city approval.  We address potential costs with you before beginning your project.

How long does it take to design and build a detached Accessory Dwelling Unit (Second Suite)?

This is also a difficult question to answer without knowing the specifics of your project.  Weather, for one, is especially hard to predict!

For a new, detached ADU in Minneapolis, MN, here are some rough guesstimates based on experience:

2-4 weeks        Site Survey
8-16 weeks      Design and documentation
4-8 weeks        Permit approval
4-8 months     Construction

TOTAL: 6-12 months