BPDA Compliant Designs

Pre-Designed ADU Plans for MA Homeowners

Skip the design headaches. Get BPDA-compliant architectural plans that are ready to submit for permits in Boston and surrounding areas. Massachusetts ADU plans for studio, 1-bedroom, and 2-bedroom accessory dwelling units.

View Plans & Pricing Contact Us

Featured Project

Brookline ADU

800 sq.ft | Detached

Why Choose Pre-Designed ADU Plans?

Skip the permit headaches and get straight to building with our BPDA compliant pre-designed plans. Massachusetts ADU plans that actually get permits in Boston, Cambridge, Newton, and surrounding communities.

Save 6 Months

Our plans are pre-approved by BPDA, so you skip the typical 3-6 month permit review process

Ready to submit in 24 hours

100% Guaranteed

Every plan is guaranteed to meet Boston's Article 53 requirements - or we fix it free

No permit rejections

Save $15,000+

Avoid costly redesigns, permit delays, and architect revisions that plague custom plans

Start earning rental income faster

Custom Plans vs. Our Pre-Approved Plans

Custom Plans

3-6 months permit review
Multiple revision cycles
No compliance guarantee
$15K+ in additional costs
Stress and uncertainty

Our Pre-Approved Plans

2-4 weeks permit approval
No revisions needed
100% compliance guarantee
Predictable pricing
Peace of mind

Why Build an ADU?

Maximize your property's potential with these key benefits

Housing Family

Create comfortable living spaces for aging parents, adult children, or visiting family members while maintaining privacy.

Passive Income

Generate rental income through long-term leases (minimum 30 days as required by Boston zoning).

Aging in Place

Design accessible units that allow seniors to live independently while staying close to family support.

Download Boston's ADU Guidebook

Our Services

BPDA-Compliant ADU Design

Custom designs meeting all requirements of Boston's ADU Ordinance (Article 53) including dimensional standards, parking reductions, and owner-occupancy rules.

Article 53 Compliant ≤900 sq.ft ISD Approved

By-Right ADU Packages

Pre-approved plans that qualify for by-right approval under Boston's zoning code, including all required documents for BPDA and ISD submission.

BPDA Pre-Reviewed No Variance Needed Included: Affidavit

Legalization Services

Complete packages to legalize existing unauthorized units through Boston's Article 80 Small Project Review process.

Retrofit Solutions Code Compliance BPDA Coordination

Pre-Designed ADU Plans - Boston Massachusetts

Choose from our collection of BPDA compliant pre-designed plans. All plans are ready to submit for permits with complete documentation. Perfect for Boston, Cambridge, Newton, Brookline, and surrounding Massachusetts communities.

Studio Plan Collection

$3,500

Small lot studio designs

Complete architectural drawings
BPDA compliance documentation
ISD permit application package
Owner affidavit template
Email support (30 days)

Get Started

1-Bedroom Plan Collection

$6,500

Medium lot 1-bedroom designs

Everything in Studio Collection
Structural engineering review
Site-specific modifications
Phone consultation (2 hours)
Permit submission assistance
Priority support (90 days)

Get Started

2-Bedroom Plan Collection

$9,500

Large lot 2-bedroom designs

Everything in 1-Bedroom Collection
Custom design modifications
On-site consultation
Contractor recommendations
Full permit management
Unlimited support (6 months)

Get Started

All plans include digital files and physical prints

Need a custom plan? Contact us

How It Works - Boston ADU Plans

Our streamlined process gets your ADU from concept to permit in 4 simple steps. Perfect for Boston, Cambridge, Newton, Brookline, and surrounding Massachusetts communities.

Choose Your Plan

Select from our pre-approved ADU designs or request custom modifications

Site Assessment

We review your property details and zoning requirements for compliance

Customize & Finalize

We adapt the plans to your specific site and prepare all permit documents

Submit & Build

You submit the permit-ready plans and start construction with confidence

BPDA Compliant

ADU Designs by Lot Size - Boston Massachusetts

Compliant designs for every lot size, from studio to 2-bedroom configurations as outlined in Boston's ADU guidelines. Perfect for Cambridge, Newton, Brookline, and surrounding Massachusetts communities.

View Boston's Official ADU Guidelines

Small Lot

Small Lot Studio Collection

400-600 sq.ft | Studio | Under 4,000 sq.ft lots

Efficient studio designs perfect for small urban lots. Maximizes space while meeting all Boston zoning requirements.

Article 53 compliant
Optimized for small lots
Open concept living

View Pricing

Medium Lot

Medium Lot 1-Bedroom Collection

600-800 sq.ft | 1 Bed, 1 Bath | 4,000-6,000 sq.ft lots

Perfect for medium-sized lots with separate bedroom and living areas. Ideal for family members or long-term rentals.

By-right approval
Separate bedroom
Full kitchen & bath

View Pricing

Large Lot

Large Lot 2-Bedroom Collection

700-900 sq.ft | 2 Bed, 1 Bath | Over 6,000 sq.ft lots

Spacious 2-bedroom designs for larger lots. Perfect for families or multi-generational living arrangements.

Two bedrooms
Family-friendly layout
Maximum square footage

View Pricing

View All Design Collections

Portfolio

Successfully Permitted ADU Projects - Boston Massachusetts

Real projects, real permits, real results. See how our pre-approved plans perform in the field across Boston, Cambridge, Newton, Brookline, and surrounding Massachusetts communities.

Newton Studio ADU - Boston Massachusetts ADU Project

Newton, MA ✓ Permitted

Small Lot Studio ADU

450 sq.ft | Studio | 3,200 sq.ft lot

Permit Timeline: 3 weeks

Construction: 3 months

Rental Income: $2,200/month

"The permit process was incredibly smooth. Sequoia Lodges' plans sailed through BPDA without any revisions needed." - Sarah M.

Cambridge, MA ✓ Permitted

Medium Lot 1-Bedroom ADU

750 sq.ft | 1 Bed, 1 Bath | 5,500 sq.ft lot

Permit Timeline: 2 weeks

Construction: 4 months

Rental Income: $2,800/month

"Perfect for our aging parents. The separate bedroom gives them privacy while keeping them close to family." - David R.

Brookline Studio

400 sq.ft | 2.5 weeks permit

$1,950

Monthly Rental

Newton 1BR

650 sq.ft | 3 weeks permit

$2,400

Monthly Rental

Cambridge 2BR

850 sq.ft | 2 weeks permit

$3,200

Monthly Rental

View Our Project Portfolio

Sequoia Lodges Team - Boston ADU Architects

About Sequoia Lodges - Boston ADU Architects

Sequoia Lodges LLC is a Boston-based architectural design firm specializing in pre-designed ADU plans that actually get permits. Founded by licensed architects with deep expertise in Boston's complex zoning requirements, we've streamlined the ADU development process for Massachusetts homeowners. Our BPDA compliant pre-designed plans help Boston, Cambridge, Newton, Brookline, and surrounding communities build accessory dwelling units quickly and compliantly.

Licensed & Certified

Massachusetts Licensed Architect • BPDA Compliant Designer • ISD Certified Plans

Proven Track Record

50+ Successful Permits • 95% First-Time Approval Rate • Average 2-Week Turnaround

Our mission is to eliminate the permit headaches that plague ADU projects. We've designed our pre-designed plans to be fully compliant with Boston's Article 53 requirements, so your plans are guaranteed to meet all zoning standards. No more back-and-forth with city planners—just submit and build.

Our Team

Licensed architect with 15+ years experience

What Our Clients Say - Boston ADU Success Stories

Real feedback from real clients who've successfully built ADUs with our plans in Boston, Cambridge, Newton, Brookline, and surrounding Massachusetts communities.

Sarah M.

Brookline, MA

"The permit process was a nightmare until we found Sequoia Lodges. Their pre-approved plans sailed through BPDA in just 3 weeks. We're now renting our ADU for $2,800/month."

Project: 800 sq.ft detached ADU

David R.

Cambridge, MA

"As a contractor, I've seen too many ADU projects fail at permitting. Sequoia Lodges' plans are bulletproof. Every detail is accounted for, and the city reviewers love them."

Project: 650 sq.ft internal conversion

Jennifer L.

Newton, MA

"The Professional Package was worth every penny. They handled everything from site assessment to permit submission. My mother-in-law loves her new space, and we love the extra income."

Project: 900 sq.ft custom ADU

Why Choose Sequoia Lodges? - Boston ADU Architects

We're not just another design firm—we're your permit success partners for Boston, Cambridge, Newton, Brookline, and surrounding Massachusetts communities

Permit Guarantee

100% BPDA compliance or we fix it free

Fast Turnaround

Complete plans in 2-3 weeks

Licensed Architects

Massachusetts licensed professionals

Ongoing Support

We're here through construction

Trusted Contractor Network - Boston Massachusetts

We work with vetted contractors who know our plans inside and out. Licensed contractors serving Cambridge, Newton, Brookline, and surrounding Massachusetts communities.

Vetted Professionals

All contractors in our network are licensed, insured, and have successfully built our ADU plans in Boston, Cambridge, Newton, Brookline, and surrounding Massachusetts communities.

• Licensed & Insured
• ADU Experience
• Quality Guaranteed

Local Expertise

Contractors familiar with Boston's building codes, permit processes, and local suppliers. Serving Cambridge, Newton, Brookline, and surrounding Massachusetts communities.

• Boston Area Coverage
• Local Permits
• Supplier Relationships

Seamless Integration

Direct communication between our team and contractors ensures smooth project execution for Boston, Cambridge, Newton, Brookline, and surrounding Massachusetts ADU projects.

• Direct Coordination
• Plan Modifications
• Ongoing Support

Get Contractor Recommendations

ADU Insights & Updates - Boston Massachusetts

Stay informed about Boston ADU regulations, design trends, and construction tips for Cambridge, Newton, Brookline, and surrounding Massachusetts communities

Regulations

Boston ADU Regulations: What Changed in 2024

Key updates to Article 53 and how they affect your ADU project planning and permitting process.

Design

Maximizing Small Spaces: ADU Design Strategies

Smart design techniques to make the most of your ADU's square footage while maintaining comfort and functionality.

Construction

ADU Construction Timeline: What to Expect

A realistic timeline for ADU construction from permit approval to final inspection, including common delays to avoid.

View All Articles

Frequently Asked Questions - Boston ADU Plans

Everything you need to know about ADU development in Boston, Cambridge, Newton, and surrounding Massachusetts communities

How long does the permit process take with your plans?

Our pre-approved plans typically receive BPDA approval in 2-4 weeks, compared to 3-6 months for custom designs. The ISD building permit usually follows within 1-2 weeks after BPDA approval.

What lot sizes do your plans work for?

Our plans are designed for three lot categories as outlined in Boston's ADU guidelines: Small lots (under 4,000 sq.ft) with studio options, Medium lots (4,000-6,000 sq.ft) with 1-bedroom options, and Large lots (over 6,000 sq.ft) with up to 2-bedroom ADUs.

Do I need to own the property for 3 years before building an ADU?

Yes, Boston requires owner-occupancy for 3 years after ADU completion. However, you can start the design and permitting process immediately - the 3-year requirement only applies after construction is complete.

Can I rent my ADU on Airbnb?

No, Boston ADU regulations require minimum 30-day rental periods. Short-term rentals (under 30 days) are prohibited for ADUs. This is designed to provide long-term housing rather than hotel-style accommodations.

What's included in your plan packages?

All packages include complete architectural drawings, BPDA compliance documentation, ISD permit application materials, owner affidavit templates, and digital files. Higher packages add structural engineering, site modifications, and ongoing support for Boston, Cambridge, Newton, Brookline, and surrounding Massachusetts communities.

Do you work with contractors?

Yes! We maintain relationships with trusted contractors throughout Massachusetts who are familiar with our plans. We can provide recommendations based on your location, budget, and timeline preferences for Boston, Cambridge, Newton, Brookline, and surrounding communities.

Get In Touch - Boston ADU Plans

Ready to build your ADU? Contact us to get started with your pre-approved plans. Serving Boston, Cambridge, Newton, Brookline, and surrounding Massachusetts communities.

Contact Information

Office

Boston, MA

Phone

(617) 872-5553

Email

info@sequoialodges.com