01
Feasibility Visit
We measure, check zoning setbacks, and discuss whether your goals fit within local bylaws — before any design fees.
Home Additions in Massachusetts
Single-room and second-story home additions designed to match your existing architecture. Master suites, sunrooms, family rooms, and seamless extensions.
OVERVIEW
Schlickmann Construction designs and builds home additions across Massachusetts and southern New Hampshire — from a 200-square-foot sunroom to a full second-story master suite. We integrate seamlessly with your existing home's architecture, foundation, and rooflines.
A home addition is the highest-ROI way to gain square footage without leaving a neighborhood you love. Schlickmann Construction designs and builds additions across Greater Boston, Middlesex County, and Southern New Hampshire — master suites, kitchens, sunrooms, mudrooms, second-story builds, and full rear additions integrated seamlessly into the existing home's roofline and elevation.
Every addition starts with a structural and zoning review. We evaluate the existing foundation, framing, roof, mechanicals, and HOA/setback constraints before producing a design. From there we handle architectural drawings, structural engineering when needed, full permitting, foundation work, framing, mechanical rough-ins, exterior finish to match existing materials, and interior fit-out.
The hard part of an addition isn't the new construction — it's the tie-in. Where new framing meets old, where new roof flashes into existing shingle courses, where new HVAC ties into existing trunk lines. We've done dozens of additions in Massachusetts and our crews know how to make new and old read as one continuous structure, not a bolt-on.
End-to-end scope — handled in-house.
- Site survey, zoning, and HOA review
- Architectural drawings and structural engineering
- Full permitting and inspection coordination
- Foundation work (footings, slab, full basement)
- Framing matched to existing structure
- Roof tie-in with existing shingle and flashing
- Exterior siding, trim, and paint match
- HVAC, plumbing, electrical extensions
- Insulation and weatherization to current MA code
- Interior fit-out (drywall, flooring, trim, paint)
- Window and door installation
- 2-year workmanship warranty
What drives your investment
- Square footage and number of stories
- Foundation type (slab vs crawl vs full basement)
- Roofline complexity (shed vs gable vs full second story)
- Mechanical extensions (HVAC zone, electrical service upgrade)
- Exterior material match (clapboard, shingle, masonry)
- Interior finish level (builder-grade vs luxury)
- Zoning variances or HOA design review
First-tier specs & brands
- Engineered I-joist and LVL framing
- Hardie, cedar, or wood-shingle siding
- Andersen or Marvin windows and doors
- Spray foam, blown cellulose, or batt insulation
- Architectural roofing matched to existing shingle
Home Additions across Greater Boston.
Most of our Home Additions projects come from these Massachusetts communities — click through for city-specific details.
OUR PROCESS
How We Deliver Home Additions
02
Architectural Design
Stamped drawings from a Massachusetts-licensed architect, structural engineering, and a transparent fixed-price budget.
03
Permits & Foundation
Building permits, ZBA variances if needed, foundation excavation, footings, and framing.
04
Build to Finish
Roof, siding, windows, MEP rough-in, insulation, drywall, flooring, paint, and final inspection — all managed by our team.
FAQ
Common Questions About Home Additions
It depends on your lot and the addition's footprint. We pull setback and zoning data on the feasibility visit and tell you upfront whether you'll need a Zoning Board variance — most additions in Stoneham, Woburn, Reading, and similar towns don't need one if you stay within existing setbacks.
Yes. We match clapboard, vinyl, cedar shake, and brick. For older homes with discontinued siding, we either match by color/profile or we re-side the affected wall plane to maintain visual continuity.
Single-room additions in our market run $80K–$180K. Second-story additions run $180K–$320K. Master suite additions with bath run $150K–$280K. Sunrooms run $90K–$160K. Your detailed proposal in step 02 has a fixed price, not a range.
From foundation to final inspection: 3–4 months for a single-room addition, 5–7 months for a second story, 6–8 months for a complete master suite with bath. Permitting adds 4–8 weeks before we break ground.
Now Booking · Q2–Q3 2026
Ready to start your Home Additions?
Pre-fill your Home Additions request and we'll respond inside 4 business hours. Most consultations scheduled within 5 business days.
- 5.0 from 50+ Google reviews
- Licensed CSL-121587 · insured
- Firm budgets — no surprise change-orders
- 4-hour response on every inquiry