Sequoia Lodges designs accessory dwelling unit plans for Boston homeowners — drawn up with licensed Massachusetts architects and engineers, and ready to file the day you choose one.
Every plan already meets BPDA and Article 53 requirements — no waiting on rounds of review comments.
Pre-designed means no blank-page design phase. Pick a plan and move toward permitting this week.
Every set is coordinated with licensed Massachusetts architects and engineers before it reaches you.
Boston-area rents are among the strongest in the country. A permitted ADU turns unused yard space into a long-term income stream.
An in-law suite for aging parents, a landing spot for adult kids, or a home office — independent space without leaving the property.
A second permitted dwelling on the lot is a durable improvement — one buyers and appraisers both recognize.
Every Sequoia Lodges package is a full drawing set — the same documents a custom architect would produce over months, ready on day one.
Fully dimensioned layouts for every level, drawn to scale and ready for your contractor.
All four elevations plus cross-sections showing heights, materials, and structural details.
Included with 1-bedroom plans and up — stamped-ready framing and foundation design.
Mechanical, electrical, and plumbing layouts, included with the 2-bedroom package.
Documentation mapping the design to Boston's ADU requirements, so review goes smoothly.
Studio, one-bedroom, or two-bedroom — browse the set that fits your lot.
Site-specific adjustments, handled by our principal engineer.
You receive a complete, permit-ready set — no further redesign needed.
Typical timeline from plan selection to a filing-ready set. Site conditions and survey availability can affect schedule.
| Plan | Approx. Size | Investment | Includes |
|---|---|---|---|
| Studio ADU | 400–550 sf | $3,500 | Complete plan set, BPDA-compliant design |
| 1-Bedroom ADU | 550–750 sf | $4,000 | Plan set + structural engineering |
| 2-Bedroom ADU Most Requested | 800–900 sf | $4,500 | Plan set + full structural & MEP design |
Site-specific tailoring is included with every plan. Larger custom modifications — different footprints, added levels, accessibility features — are available by inquiry.
Sequoia Lodges is a Massachusetts engineering design firm focused on one thing: getting Boston-area homeowners from idea to permit-ready ADU plans without the cost and delay of custom design.
Design and site-specific engineering are led by our principal engineer, and every plan set is coordinated with licensed Massachusetts architects and engineers who know Boston's Article 53 and BPDA requirements first-hand.
We serve Boston, Cambridge, Newton, Brookline, and surrounding Greater Boston communities.
Yes. Every plan is designed to meet BPDA and Article 53 requirements and is ready to submit for permit, so you skip months of custom design work.
Every set includes dimensioned floor plans, exterior elevations, building sections, and compliance notes. Structural engineering is included with 1-bedroom plans and up, and the 2-bedroom set adds full MEP (mechanical, electrical, plumbing) design.
Yes. Site-specific adjustments are part of every engagement and are handled by our principal engineer. Larger custom modifications are available by inquiry.
Because our plans are pre-designed, there is no blank-page design phase. Most clients are moving toward permitting within days of selecting a plan.
We serve Boston, Cambridge, Newton, Brookline, and surrounding Greater Boston communities across Massachusetts.
No — we're a design and engineering firm, not a construction company. You receive a complete, permit-ready plan set and your contractor builds from it. That separation keeps our pricing fixed and our recommendations honest.
Tell us about your property and we'll help you pick the right plan — usually within one business day.
