Brighton, Michigan · Livingston · Oakland · Washtenaw · W. Wayne

Additions that look like they were always part of the house.

A home addition by Lux Builders in the Brighton area runs $150,000 to $500,000+. The money is not in the new space — it is in the seam where new meets old. That is the part we engineer before the price is set. That is a range, not a quote. The design phase is what turns it into a real number, and once that number is set it does not move.

Book a Free Design Consultation Call (810) 222-1016

Fifteen minutes, on the phone, with a builder — not a salesperson — to see if we’re a fit. No obligation.

Addition, at a glance

Typical investment: $150,000 – $500,000+
Design fee: 1–3% of projected project cost
Left to allowances at signing: Nothing
Selections signed before pricing: 100% · zero TBDs
Workmanship warranty: 18 months

Where the money actually goes

The new space is easy. The seam is the job.

Buyers price the square footage and are surprised by the connection. A new foundation that has to meet an old one. A roof that has to tie into an existing plane. An existing house that has to be made to carry the load. Explaining that in the first meeting is worth more than any brochure.

What actually moves the number

The foundation seam. New footings meeting a decades-old foundation, matched for depth, drainage and movement.
The roof tie-in. A roofline that continues the existing plane reads as original; a bolted-on box reads as a mistake. The first one takes engineering.
Whether the existing house can carry the load. A second storey means the structure below is verified and often reinforced — resolved in design, never discovered mid-build.
Whether electrical service or HVAC has to be resized. New square footage draws on the systems the house already has. Sometimes they have room; sometimes they do not.
Matching what exists. Siding, trim profiles, floor heights and sightlines — the details that make an addition disappear into the house.

The six questions addition buyers ask

Are they licensed? Are they insured? How many additions have they built? Have they ever built an entire home? How do you integrate the new with the old? Can my structure support the new space?

Question four is the one that matters most — we have built homes from the ground up, which is exactly what it takes to add on to yours. Licensed and insured in Michigan, licence No. 262600685.

How the price holds

Four stages. One fixed price. Nothing on a verbal.

Change orders exist because decisions get deferred. An allowance is a decision deferred with a placeholder number attached. Move every decision in front of the contract and there is nothing left to change-order.

Design Agreement

Sign-off: design agreement signed

The design fee is 1–3% of projected project cost, and it buys more than drawings. It also buys the homework: non-destructive inspections of what is behind the walls, under the floors and above the ceilings — so your price is built on what your house actually is, not on what anyone hopes it is. A portion credits toward your build agreement if that agreement is signed within 90 days.

Plans & Selections

Sign-off: 100% signed · zero TBDs

Cabinetry, counters, tile, fixtures, hardware, flooring, paint — every one chosen, priced and signed. Estimating does not begin until every selection carries your signature.

One True Price

Sign-off: contract + job scope addendum

One fixed price, with a job scope addendum attached that accounts for every item on the job. Nothing left to allowances by the time you sign. The number is the number.

Build with Confidence

Sign-off: inspections passed

Once the build contract is signed, we develop the final construction plans — the working drawings your job is built and inspected from. Every trade bid at least twice. No subcontractor on site until their release is signed off. A written schedule, and an update on the same day every week.

Answers, before you call

Questions, answered straight.

How much does a home addition cost in the Brighton area?

A home addition by Lux Builders runs $150,000 to $500,000+ depending on size, structure, and how the new space connects to the old. The price is fixed before construction begins. That is a range, not a quote.

Why do additions cost more than people expect?

The money is not in the new space — it is in the seam. A new foundation that has to meet an old one, a roof that has to tie into an existing plane, and an existing house that has to be made to carry the load. Two additions of identical square footage can differ by a hundred thousand dollars on the connection alone.

Have you built entire homes, not just additions?

Yes — we have built houses from the ground up, so we know what it takes to add on to yours. That is the single most useful qualification an addition contractor can have.

Should we add on or move?

Sometimes the honest answer is move. Weigh realtor commission, closing costs on both sides, moving and furnishing — and the largest and most permanent number, giving up a low mortgage rate. Where it does not pencil: if you are already at the top of your street's value, or the lot cannot take the footprint. We will tell you if that is your situation.

Do you handle permits and structural engineering?

Yes. Permits, engineering and inspections are part of the process — an addition is structural work, and the design phase resolves the structure before the price is set.

Next step

Fifteen minutes. On the phone. No obligation.

Tell me what you are thinking about and roughly when. I will tell you what it costs, what it involves, and whether it is worth doing — including when the answer is no.

Fastest route

(810) 222-1016

Mon–Fri, 9am–5pm. It rings to a builder, not a call center.

A person, not a call center or an account manager.
Calls in business hours are returned within the hour.
After hours you get a text back, and a call first thing.
No pressure. If the schedule is full I will say so — that is a calendar, not a tactic.

Prefer email? info@myluxbuilder.com

Booked — I have your details.

You will hear from me within the hour during business hours, and first thing tomorrow if you sent this in the evening. If it is urgent, call (810) 222-1016.