ADU Budget Reality Check

New England Additions · ADU Budget Reality Check

Is your budget realistic for an ADU?

Compare your budget with our four well-appointed models, starting at $279,000–$319,000 — and see how your septic, water and lot change the all-in cost.

Your ADU budget reality check

Custom designs depend on your plans and site, so this range starts at our largest model and runs higher. We'll review your ideas on a discovery call.

Estimated all-in range

The upper end reflects high-end customization and more complex sites.

How your budget compares to each model

What's moving your estimate

Projects move toward $500,000+ with high-end customization or challenging sites — ledge, steep slopes or a new septic system.

Still needs confirmation

Published prices are base starting prices, not quotes. These items are specific to your property and must be confirmed with New England Additions:

A note on financing

This comparison isn't a financing approval. Most homeowners use their own bank, a home equity line or a refinance, and lenders often limit how much they'll lend for an ADU. Check your borrowing limit with your lender before planning around the full range.

This is a planning comparison, not a quote. Site costs are typical Massachusetts ranges; your final price depends on your property, selections and approvals, and requires a site evaluation.