Ofir Construction, Inc. logo
addition-contractor-mendon-massachusetts-ofir

Addition in Mendon, MA

New square footage that looks like it was always there

(508) 598-8704

Free, no-obligation estimate on Mendon properties · Fully insured

Free Addition Estimate

Tell us about your Mendon property and we will come look at it.

Addition for Mendon Homes

Building an addition in the Blackstone Valley means designing for a long damp season along the river, hard cycling across freezing, and reliable ice damming wherever the sun does not reach. A new roof plane meeting an old one is exactly where ice and water find their way in, so on Mendon additions we detail that intersection first and everything else follows from it.

An addition is the most demanding thing a residential builder does: new foundation, new framing tied into old, roof lines that have to resolve honestly, and mechanicals extended from systems sized for a smaller house. We do all of it.

What Mendon Properties Actually Need

The housing stock here
Farmhouses here carry additions from several eras, and the roof junctions where those additions meet are the most reliable source of leaks.
Working on the site
Rural parcels with soft ground mean equipment routes need plating in wet months.
Permits and inspections
Well and septic on most parcels bring Board of Health into bedroom-adding projects.

What Goes Wrong in the Blackstone Valley

Zoning discovered too late

Setbacks, lot coverage, and septic capacity kill more additions than budget does - and usually after money has been spent on design.

Leaks where old meets new

The junction between existing and added structure is the single most common failure point, and the hardest one to fix afterward.

The bolted-on look

Mismatched rooflines, siding that doesn’t align, and window proportions that give it away instantly from the curb.

Addition Services We Provide in Mendon

  • Single-room and multi-room additions
  • Second-story additions
  • Foundation, excavation, and slab work
  • Full framing, roofing, siding, and finish
  • Primary suite and in-law additions
  • Garage and mudroom additions

How Your Mendon Project Runs

  1. 01

    Free Estimate

    Call us and we come out to your property, walk the job with you, and put real numbers on paper - no cost, no obligation.

  2. 02

    Scope & Timeline

    We agree on the exact scope, materials, and a clear start-to-finish timeline before a single tool comes off the truck.

  3. 03

    We Build It

    Our own carpenters do the work - framing, roofing, windows, decks. One crew, one point of contact, no subcontractor roulette.

  4. 04

    Final Walkthrough

    We walk the finished job with you and don't call it done until you say it is. Site left clean.

If you are weighing an addition in Mendon against moving, we will walk your property and tell you what can actually be built. Free estimate - (508) 598-8704.

Questions

Addition in Mendon - FAQ

Yes - Mendon is part of our regular service area. We're based at 190 Bolton St, Unit 11, Marlborough, MA 01752, and addition is one of the 8 services we handle in-house.

construction-contractor-marlborough-ma-free-estimate-ofir

Free Estimate

Get Your Free Construction Estimate

Call and we answer during business hours. Prefer to write it down? The request form is at the top of this page.

(508) 598-8704Go to the estimate form

No obligation and no cost for the estimate. We reply within 24 hours and we don't share your details.

Call (508) 598-8704