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

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.