Site looks good, although i hope this is just the gallery page and you will do something different for and entrance and home page. I would like to comment on interior shots if I may. I know that you say your clients want accurate technical picture, and I agree somewhat, but if you bring additional complimentary lighting to a scene which may not naturally have it, I think most clients would appreciate that (if it's done right). I photograph kitchens (much smaller than the interiors you shoot) and take two 500w studio monolights and two port flashes to a shoot. Sometimes I will do everything I can to slow a shutter down long enough to manually pop the flash in multiple directions during one shot. I can see you have a vision for the direction of your business and it shows in the exterior shots. But don't let the fact that you may not have the right equipment YET hinder your vision for improvement on the interiors. I like the gallery page and look forward to seeing more pages.
On a side note, I see you have a D300 which also means you have Capture NX. Have you had a chance to mess around with the control points on NX yet? They can be a VERY useful tool for bringing more or different light to specific areas of an image. IE control points in darker coners of an interioir can bring balance to a final image. See the kitchens shots in my commercial gallery for examples.