Your Property Is Sitting On a Gold Mine.
You Just Need the Key.
We build premium, fully code-compliant Accessory Dwelling Units (ADUs) for $210,000 — turning your unused basement, attic, or backyard into a unit that commands $3,400+/month in rent. No headaches. No guesswork. We handle everything.
The Numbers Don't Lie
Here is the real math behind why Massachusetts landlords are calling us right now.
Think Like the MIT Students Who Cracked the Lottery
Back in the early 2000s, a group of MIT students figured out that the Massachusetts lottery had a flaw — when the jackpot rolled over, the expected return was positive. They didn't cheat. They just saw what everyone else missed and acted on it.
You have the same opportunity right now. A typical Boston three-decker costs over $1,000,000 and usually needs a ton of work. But if you already own multi-family properties, you are sitting on untapped space — a basement, an attic, a backyard — that the market hasn't priced in yet.
We build you a premium, fully legal ADU in that space for $210,000. Your new tenant pays you $3,400 a month. That's $40,800 a year in new income from space you already own. The math is simple. The window is open right now. The question is: will you act?
What Does 900 Sq Ft Actually Cost in Massachusetts?
Our ADU is 900 square feet. Here's what that same space costs to buy in your county — versus what we charge to build it.
| County | Price / Sq Ft (Buy) | 900 Sq Ft = Cost to Buy | Our ADU Build Cost | Your Savings | Top 2BR Rent |
|---|---|---|---|---|---|
| Suffolk (Boston) | $953/sq ft | $857,700 | $210,000 | +$647,700 | $3,400–$4,350/mo |
| Norfolk | $707/sq ft | $636,300 | $210,000 | +$426,300 | $2,800–$3,600/mo |
| Middlesex | $580/sq ft | $522,000 | $210,000 | +$312,000 | $2,600–$3,400/mo |
| Plymouth | $399/sq ft | $359,100 | $210,000 | +$149,100 | $2,500–$2,900/mo |
| Bristol | $331/sq ft | $297,900 | $210,000 | +$87,900 | $2,000–$2,400/mo |
Sources: Redfin, Zillow, Boston Pads, Properstar — April 2026. Buy costs represent median price per sq ft for residential properties.
We Don't Build Apartments. We Build Magnets for Premium Tenants.
Every $210K ADU we build is designed specifically to attract the highest-paying tenant in your market. That means a high-income professional, a young couple, or a remote worker who wants a premium space and will pay top dollar to get it.
Who Is This For?
Multi-Property Investors
You own multiple rental properties in Massachusetts and want to maximize cash flow without buying more buildings. We add premium ADUs to what you already own.
Investor Strategy →Homeowners & Families
You want space for aging parents, need extra income to pay off your mortgage, or want to save for your kids' college. An ADU is the smartest move you can make.
Family Solutions →Need Financing?
Boston offers a $50K 0% deferred loan. MassHousing offers up to $250K. HELOCs, cash-out refinancing — we help you find the right path to funding.
Explore Financing →
A Word From Julian
"I started Kaizen Construction Group because I got burned. I hired contractors who didn't show up, took my money, and left projects half-finished. I know exactly what it feels like to trust someone with your investment and get let down."
"That experience is the reason I built this company the way I did. Kaizen is a Japanese word that means 'continuous improvement.' It is not just a name — it is a promise. We will never disrespect your time, your money, or the quality of our work. Period."
"When you call me, you get me. When we shake hands, that deal is sacred. I have been through hell and back to build a company I am proud of, and I will not let anything tarnish that."
Ready to Find Out What Your Property Can Do?
Tell us a little about yourself and we'll reach out within 24 hours with a free feasibility assessment.