Have you ever built an entire house?

Yes. Lux Builders is a design-build custom home builder as well as a remodeler, and new custom homes are part of our published work. That matters for an addition, because the hard part is not the new space — it is making the existing house carry it.

Should I add on, or should I move?

Count the full cost of moving: realtor commission, closing costs on both sides, moving and furnishing, and the mortgage rate you give up. Then compare it with the addition. If you are already at the top of your street's value, or the lot cannot take the footprint, we will tell you the addition does not pencil.

Great room and kitchen in a Northville, MI home by Lux Builders

Northville, Michigan · Wayne & Oakland County

Home additions in Northville, from a builder who builds whole houses.

Q: How much does a home addition cost in Northville, Michigan?

Home additions by Lux Builders run $150,000 to $500,000+. One room with a simple roof tie-in opens the range; a full second storey sits at the top. That is a range, not a quote — the design phase turns it into a fixed number.

A home addition in Northville runs $150,000 to $500,000+. One room with a simple roof tie-in opens the range; a full second storey sits at the top. The money is not in the new space — it is in the seam, where new meets old. That is a range, not a quote, and the design phase is what turns it into a number that does not move.

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

Northville is a 25-minute drive from our Brighton office. We work here regularly.

Northville additions, at a glance

Typical investment: $150,000 – $500,000+
Design fee: 1–3% of projected project cost
Allowances in the contract: None
Permits & HOA approval: We handle them
Custom homes built ground-up: Yes — that is the point
Workmanship warranty: 18 months

The mechanism

The money is in the seam.

Buyers price the square footage and are surprised by the connection. Here is the honest version: the new room is the simple part. What costs money is a new foundation that has to meet an old one, a roof that has to tie into an existing plane without telegraphing where it happened, and an existing house that has to be made to carry the load it was never designed for.

That is also why the question “can my structure support the new space?” is not a formality. Sometimes the answer changes the price by fifty thousand dollars, and it is much better to find that out during design than during framing.

Foundation. New footings that meet the existing wall, at the right depth for this frost line.
The roof tie-in. Where the new plane meets the old, and whether it can be made to look original.
Load path. Whether the existing structure carries the new weight, and what reinforcement it needs if not.
Service capacity. Whether the electrical service and the HVAC can take the added square footage, or have to be resized.
Matching what is there. Siding, brick, windows and trim that have weathered for twenty years.

The question nobody else answers

Add on, or move?

Northville, Novi and Plymouth all have the same dynamic: people love the neighbourhood and need more space. Before you spend anything with us, do this arithmetic honestly.

What moving actually costs: realtor commission, closing costs on both sides, moving and furnishing the new place — and the largest and most permanent item, the mortgage rate you give up.

Where an addition does not pencil: if you are already at the top of your street's value, or the lot cannot take the footprint. If that is your situation, I will tell you. Telling a prospect not to buy is not a sales tactic here; it is the fastest way to find out whether we are the right firm.

The six questions addition buyers actually ask

Ask these of every builder. Ours are below.

Not a brochure list — these are the six things people ask on the first call, in the order they usually ask them.

Are you licensed?

Yes. Lux Builders Corporation holds Michigan Residential Builder Licence No. 262600685, valid to 05/31/2029, with a state-registered Qualifying Officer on file.

Are you insured?

Yes, licensed and insured in Michigan. You are welcome to a certificate before anything is signed — ask for it, and ask every other firm for theirs too.

How many additions have you built?

Enough that our published work includes bedroom and bonus-room additions, garage and living-room additions, and dining and living-room additions. I will not put a count on a website that I cannot reconcile against our records — and you should be sceptical of anyone who does.

Have you ever built an entire home?

Yes — and this is the one that matters. We are a design-build custom home builder as well as a remodeler; new custom homes, including lake homes, are part of our published work. The kitchen-and-bath specialists competing for this job have never carried a roof load. We have.

How do you integrate the new with the old?

At design, not at framing. We open up what needs opening, look at the existing structure, and draw the seam before the price is set. Matching siding, brick and window lines is a selection decision made in stage two, signed, and priced in.

Can my structure support the new space?

That is exactly what the design phase answers. Where it needs reinforcement, that reinforcement is in the drawings and in the fixed price — not discovered later and change-ordered.

Work in and around Northville

Real projects, real photographs.

No stock photography anywhere on this site. Northville sits about 25 minutes from our Brighton office, inside our core service area alongside Novi, Plymouth, Milford and South Lyon.

Open great room and kitchen in Northville, MI by Lux Builders — Northville — kitchen & great room

Custom bar millwork in Brighton, MI by Lux Builders — Brighton — bar & billiards

Lower level billiards room in Brighton, MI by Lux Builders — Brighton — lower level

Custom cabinetry detail by Lux Builders — Brighton — cabinetry detail

Mudroom addition lockers by Lux Builders — Brighton — mudroom

Answers, before you call

Northville addition questions, answered straight.

How much does a home addition cost in Northville?

$150,000 to $500,000+. One room, one storey and a simple roof tie-in opens the range. A full second storey, or an addition large enough to force whole-house upgrades, sits at the top. That is a range, not a quote.

Do you handle the permits and the HOA?

Yes. We handle permits and HOA approval. Twenty-plus years of experience means established township and permit relationships across Livingston, Oakland, Washtenaw and western Wayne.

Will the addition look like an addition?

That is a design decision and a materials decision, and both are made and signed before the price is set. Matching twenty-year-old siding, brick and window lines is solvable — but it has a cost, and that cost belongs in the number rather than in a conversation later.

Can we live in the house during construction?

Usually, and it is one of the first things we plan around. The sequence, the dust barriers and which rooms come offline in which week go into the written schedule before we start.

What if you open it up and find something bad?

That is what the design phase is for. We open up what we need to open up and price what we find before the number is fixed, not after. It is the difference between a surprise and a plan.

Why should I use a Brighton firm for a Northville job?

Because the firms nearest you that can do an addition properly are mostly kitchen-and-bath specialists who have never built a house, and the design-build firms that have are in Ann Arbor with longer design queues. We are twenty-five minutes away, we build whole homes, and we will give you the price before you commit.

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.