Bluestone HomesFull Design & Build

ADU Specialists

Bluestone ADU Model Collection

Eight starting design concepts from roughly 400 to 1,200 square feet, organized by size with a preliminary planning range and Rhode Island / Massachusetts by-right status for each. Every concept can be modified based on property conditions, zoning, budget, homeowner needs, site constraints and local requirements.

New England Traditional exterior concept for The BristolConcept

New England Traditional · Shown as inspiration

The Bristol

Compact single-room plan with a full kitchenette, three-quarter bath and a defined sleeping alcove.

Square feet
~400–450 SF
Bedrooms
Studio
Bathrooms
1
Approx. dimensions
20' x 20' (approx.)
In the guide

Ideal use

Guest space / single occupant

Preliminary planning range

$150K – $200K+

Early-stage planning range — refined through design and scope development.

RI status
By-right eligible*
MA status
By-right eligible*

Customization notes

  • Add a small covered entry
  • Swap the sleeping alcove for a partitioned bedroom
  • Upgrade to a full bath
Get My Free ADU Guide

The free guide includes all featured Bluestone ADU models and their complete floor plans.

Cottage exterior concept for The WarwickConcept

Cottage · Shown as inspiration

The Warwick

Separated bedroom with an open kitchen-living core and a covered entry for weather protection.

Square feet
~500 SF
Bedrooms
1 Bedroom
Bathrooms
1
Approx. dimensions
25' x 20' (approx.)
In the guide

Ideal use

Aging parent / long-term guest

Preliminary planning range

$150K – $235K+

Early-stage planning range — refined through design and scope development.

RI status
By-right eligible*
MA status
By-right eligible*

Customization notes

  • Widen the covered entry into a porch
  • Add a stacked washer/dryer closet
  • Add a rear slider to a patio
Get My Free ADU Guide

The free guide includes all featured Bluestone ADU models and their complete floor plans.

Coastal exterior concept for The BarringtonConcept

Coastal · Shown as inspiration

The Barrington

Shingle-style exterior with a larger living area, laundry closet and a full accessible bath.

Square feet
~600 SF
Bedrooms
1 Bedroom
Bathrooms
1
Approx. dimensions
30' x 20' (approx.)
In the guide

Ideal use

Rental income / downsizing

Preliminary planning range

$150K – $270K+

Early-stage planning range — refined through design and scope development.

RI status
By-right eligible*
MA status
By-right eligible*

Customization notes

  • Shingle or clapboard exterior
  • Add a screened porch
  • Reconfigure for a curbless shower
Get My Free ADU Guide

The free guide includes all featured Bluestone ADU models and their complete floor plans.

Modern Farmhouse exterior concept for The NewportConcept

Modern Farmhouse · Shown as inspiration

The Newport

Two bedrooms on a split layout with a shared bath and an open kitchen, dining and living space.

Square feet
~700 SF
Bedrooms
2 Bedroom
Bathrooms
1
Approx. dimensions
28' x 25' (approx.)
In the guide

Ideal use

Adult children / small family

Preliminary planning range

$170K – $315K+

Early-stage planning range — refined through design and scope development.

RI status
By-right eligible*
MA status
By-right eligible*

Customization notes

  • Convert bedroom two to an office
  • Add a half bath
  • Extend the living space by two feet
Get My Free ADU Guide

The free guide includes all featured Bluestone ADU models and their complete floor plans.

Contemporary exterior concept for The NarragansettConcept

Contemporary · Shown as inspiration

The Narragansett

Two full baths, a larger kitchen with island seating, and a covered patio connection to the yard.

Square feet
~800 SF
Bedrooms
2 Bedroom
Bathrooms
2
Approx. dimensions
32' x 25' (approx.)
In the guide

Ideal use

Full-time independent living

Preliminary planning range

$190K – $360K+

Early-stage planning range — refined through design and scope development.

RI status
By-right eligible*
MA status
By-right eligible*

Customization notes

  • Island size and seating count
  • Covered patio depth
  • Primary suite closet configuration
Get My Free ADU Guide

The free guide includes all featured Bluestone ADU models and their complete floor plans.

Coastal exterior concept for The PortsmouthConcept

Coastal · Shown as inspiration

The Portsmouth

Generous primary bedroom, dedicated laundry, walk-in shower and pantry storage.

Square feet
~900 SF
Bedrooms
2 Bedroom
Bathrooms
2
Approx. dimensions
36' x 25' (approx.)
In the guide

Ideal use

Downsizing in place

Preliminary planning range

$215K – $405K+

Early-stage planning range — refined through design and scope development.

RI status
By-right eligible*
MA status
At MA's by-right ceiling — confirm against your home's size*

Customization notes

  • Add a pantry or study nook
  • Zero-step entry throughout
  • Second exterior door for rental separation
Get My Free ADU Guide

The free guide includes all featured Bluestone ADU models and their complete floor plans.

New England Traditional exterior concept for The East GreenwichConcept

New England Traditional · Shown as inspiration

The East Greenwich

A full two-bedroom, two-bath layout with room for a dedicated office or den and generous storage.

Square feet
~1,000 SF
Bedrooms
2 Bedroom
Bathrooms
2
Approx. dimensions
40' x 25' (approx.)
In the guide

Ideal use

Multigenerational living

Preliminary planning range

$240K – $450K+

Early-stage planning range — refined through design and scope development.

RI status
By-right eligible (2BR)*
MA status
Exceeds MA by-right cap — local approval path

Customization notes

  • Mudroom entry with bench and lockers
  • Accessible bath package
  • Covered side porch
Get My Free ADU Guide

The free guide includes all featured Bluestone ADU models and their complete floor plans.

Modern Farmhouse exterior concept for The Ocean StateConcept

Modern Farmhouse · Shown as inspiration

The Ocean State

The largest concept — a full-size two-bedroom residence at Rhode Island's statewide ADU ceiling.

Square feet
~1,200 SF
Bedrooms
2 Bedroom
Bathrooms
2
Approx. dimensions
40' x 30' (approx.)
In the guide

Ideal use

Full-time living at RI's maximum size

Preliminary planning range

$295K – $570K+

Early-stage planning range — refined through design and scope development.

RI status
By-right eligible (2BR, at RI's max)*
MA status
Exceeds MA by-right cap — local approval path

Customization notes

  • Attached one-car garage option
  • Study or third sleeping area
  • Screened porch and patio package
Get My Free ADU Guide

The free guide includes all featured Bluestone ADU models and their complete floor plans.

*Subject to municipal zoning, lot size, and other property-specific requirements. See our ADU Planning Guide for details. Planning ranges are early-stage budget ranges, not construction quotes — final pricing follows completed plans and a defined scope.

How to read these

Starting concepts for your lot

Each concept is a starting point. Final plans are developed after a property feasibility review, and every dimension, layout and finish is adjusted to the site and to how you plan to use the space.

The styles shown with each model — New England Traditional, Coastal, Cottage, Modern Farmhouse, Contemporary — are inspiration examples only, never a limited menu. You are not restricted to any style shown on this site.

Get My Free ADU Guide

Beyond ADUs

Need something bigger?

If your property or your plans call for more than an ADU, Bluestone Homes designs and builds larger residential projects across Rhode Island and Massachusetts.

Custom Homes

A ground-up home designed around your property and how you live.

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Additions

More space tied into your existing home, designed to look original.

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Major Renovations

Whole-home and large-scope renovations, managed start to finish.

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New Construction

Full residential new construction across Rhode Island and Massachusetts.

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